UNAVCO Logo
 
 
Highlights 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001
UNAVCO Highlights
Title Date
Data Event Response to the 24 August 2014 Mw 6.0 South Napa Earthquake - 6km NW of American Canyon, California A Mw 6.0 earthquake with its epicenter located 6 km (4 miles) northwest of American Canyon, California and 8 km (5 miles) south southwest of Napa, California, occurred at 3:20 a.m. PDT on August 24, 2014 at a depth of 11.3 km. As a response, UNAVCO is currently downloading data recorded at five-samples-per-second (5 sps) for the full 24 hour UTC day of the event, and one-sample-per-second (1 sps) data for 3 days before and 3 days after the earthquake (7 days total). UNAVCO also produced a fully processed 1-sps borehole strainmeter (BSM) dataset spanning the time period of this event.
Read more
2014-08
Detecting change through the Clouds: Revealing climate change from a high elevation glacier in the Alaska Range The main goal of this collaborative Dartmouth-University of Maine-University of New Hampshire project is to reconstruct the history of precipitation and atmospheric circulation in Alaska during the last thousand years using ice core records of snow accumulation.
Read more
2014-08
Site upgrades bring stations online in the Dominican Republic During the last part of April, UNAVCO and the Oficina Nacional de Meteorología (ONAMET) upgraded communications on COCONet sites CN06, CN08, and CN27 and Jurisdicción Inmobiliaria (JI) sites BARA, LVEG, and SROD in the Dominican Republic, and brought site CN06 online for the first time since it was installed in August 2012.
Read more
2014-08
UNAVCO installs COCONet cGPS sites CN13 and CN14 in the Bahamas Even stainless steel in the Caribbean starts to rust anywhere it has been welded or is in contact with another type of alloy such as aluminum. While the hardware used in the Plate Boundary Observatory works well in temporate climates, COCONet requires hardware better suited to hot, humid, and salty environs.
Read more
2014-08
The RESESS internship program kicks off its 10th year UNAVCO welcomes the 2014 RESESS cohort! This is the 10th group of RESESS interns and we have had a fantastic kick-off to the summer. Already, the group has survived orientation and leadership training and the interns are digging in on their research.
Read more
2014-07
Reaching educators in Alaska In March of 1964, a magnitude 9.2 earthquake devastated Anchorage and other communities along the Alaskan coast. Fifty years later, Alaskan museum and park interpretive professionals, naturalist guides, instructional specialists, and K-12 teachers gathered at the USGS Alaska Science Center in Anchorage to participate in one of two separate workshops exploring the region’s tectonics.
Read more
2014-06
UNAVCO installs COCONet cGPS site CN21 in Honduras In collaboration with Fausto Ramirez and Oscar Meza of the Honduras Instituto de la Propiedad and Luis Eveline of the Universidad Politécnica de Ingeniería de Honduras (UPI), UNAVCO engineer Michael Fend installed CN21 in San Lorenzo, Honduras.
Read more
2014-06
Data Event Response to the 23 June 2014 Mw 7.9 Earthquake 24km SE of Little Sitkin Island, Alaska A Mw 7.9 earthquake occurred on June 23, 2014, in the Aleutian Islands, Alaska. As a response, UNAVCO is downloading high-rate GPS data from Plate Boundary Observatory stations within 1000 km of the epicenter of the event. PBO borehole strainmeter, seismometer, and tiltmeter data are also available.
Read more
2014-06
PBO Featured at EarthScope Symposium and Reception Scientists, funders, and policy makers celebrated the successes of EarthScope's first ten years on May 14 and 15, 2014, in Washington, D.C. The Plate Boundary Observatory (PBO) was featured as one of EarthScope's three major observatories, along with USArray and the San Andreas Fault Observatory at Depth (SAFOD). Events included Congressional briefings, a half-day science symposium, and an evening reception.
Read more
2014-06
2014 UNAVCO Science Workshop The bi-annual UNAVCO Science Workshop has continued its tradition of bringing the UNAVCO community together to share advances in geodesy-related research and education. The 2014 UNAVCO Science Workshop was held in Broomfield, Colorado, 4-6 March 2014, with a theme of Celebrating Thirty Years of Geodesy Innovation for Science.
Read more
2014-06
UNAVCO installs COCONet cGPS site CN46 in Carriacou, Grenada While most people in the Caribbean were enjoying their time off for Easter weekend, UNAVCO engineers Jacob Sklar and Michael Fend were installing COCONet GPS site CN46 on Carriacou Island, Grenada.
Read more
2014-04
Earthquake and tsunami science and preparedness for coastal Cascadia educators Through a grant from the EarthScope Program of the National Science Foundation, the Cascadia EarthScope Earthquake and Tsunami Education Program (CEETEP) offers four-day workshops to foster community engagement in earthquake and tsunami science and preparedness and to encourage collaboration and exchange between formal and informal educators.
Read more
2014-04
Connecting museum visitors to geohazard science and GPS technology Monitoring a Shifting Earth is a new science exhibit on display at Oregon State University's Hatfield Marine Science Visitor Center, a Sea Grant Institution in Newport, Oregon.
Read more
2014-04
Data Event Response to the 28 March 2014 Mw 5.1 Earthquake 2 km East of La Habra, California A Mw 5.1 earthquake with its epicenter located 2 km east of La Habra, California, occurred at 9:09 p.m. on March 28, 2014 at a depth of 7.5 km. As a response, UNAVCO is downloading high-rate GPS data from Plate Boundary Observatory stations near the epicenter of the event. PBO borehole strainmeter data are also available.
Read more
2014-04
Data Event Response to the 10 March 2014 Mw 6.8 Earthquake 77 km WNW of Ferndale, California A Mw 6.9 earthquake occurred on March 10, 2014, off the coast of northern California. As a response, UNAVCO downloaded high-rate GPS data from Plate Boundary Observatory stations within 500 km of the epicenter of the event. PBO borehole strainmeter data are also available.
Read more
2014-04
Community Event Response to the 1 April 2014 Mw=8.2 Iquique, Chile Earthquake A magnitude 8.2 earthquake ruptured the subduction zone off the coast of northern Chile at 11:46:46 p.m. GMT on April 1, 2014. The event ruptured the Iquique seismic gap, a segment of the Nazca-South American subduction zone that last ruptured in 1877.
Read more
2014-04
GSAC Software Makes the Grand Tour In Europe UNAVCO’s Geodesy Seamless Archive Centers (GSAC) software system enables efficient searches for geodesy data at any number of independent data centers. Current GSAC-enabled data centers include sites in Portugal, Italy, Greece, Iceland, France, and Belgium.
Read more
2014-03
Seals, a Lava Lake, and Subglacial Microbes: 2013-2014 Antarctic TLS Highlights, Part 1 UNAVCO provided terrestrial laser scanning (TLS) support for seven projects in Antarctica during the 2013-2014 summer season. Here, polar engineer Brendan Hodge highlights three of them.
Read more
2014-03
UNAVCO installs COCONet cGPS sites CN04 and CN47 in Saint Lucia UNAVCO engineers, in collaboration with the University of the West Indies and Saint Lucia’s Ministry of Physical Development, Housing and Urban Renewal, installed cGPS sites CN47 and CN04 in Saint Lucia during a 2.5-week trip spanning February and March 2014.
Read more
2014-03
Maintaining POLENET Sites from the South Pole The POLENET Antarctic Network (ANET) has produced a valuable dataset of GPS and seismic measurements since 2007. These sites endure some of the harshest weather conditions on the planet, and consequently many must be visited at least every two years. The South Pole provides an ideal logistical hub for servicing geophysical stations that are up to 400 miles away.
Read more
2014-03
UNAVCO installs COCONet cGPS site CN05 in the Dominican Republic Site CN05 at the Puna Cana International Airport in the Dominican Republic will provide insight into movement within the Puerto Rican Trench, the deepest part of the Atlantic Ocean and the Caribbean. CN05 was installed by UNAVCO in collaboration with the Oficina Nacional de Meteorología (ONAMET); Geomedición, Instrumentos y Sistemas; Holasa; and the Punta Cana Group of the Punta Cana International Airport.
Read more
2014-02
Tracking subsidence in Houston UNAVCO is supporting the design and construction of more than 40 new permanent GPS stations in the greater Houston metropolitan area. This network, called HoustonNET, will provide data for a ground subsidence study aimed at reducing flood risk.
Read more
2014-01
Repairing GGN site HARV to keep up with calibration of global sea level measurements UNAVCO field engineer Andrea Prantner visited the Harvest oil platform to repair infrastructure for GGN site HARV. HARV is used by NASA to calibrate the long-term satellite-based record of global sea level.
Read more
2014-01
UNAVCO at AGU 2013 Thanks for coming to visit us at our new booth, engaging with us through talks and posters, and collaborating with us. In case you missed it, here are some highlights from AGU 2013.
Read more
2013-12
UNAVCO at GSA 2013 Thanks for coming to visit us at our new booth, engaging with us through talks, posters, and workshops, and collaborating with us. In case you missed it, here are some highlights from GSA 2013.
Read more
2013-11
Scanning vegetation and landforms in Montana In August of 2013, UNAVCO supported the second half of a two-part terrestrial laser scanning (TLS) project undertaken by scientists at the University of Montana. The August survey took place on the Bitterroot River in Montana. The goal of the research is to better understand how rivers change due to interactions between water flow, sediment, and vegetation.
Read more
2013-12
Scanning vegetation and landforms in Arizona In April of 2013, UNAVCO supported the first half of a two-part terrestrial laser scanning (TLS) project undertaken by scientists at the University of Montana. The April survey took place on the Santa Maria River in arid northwestern Arizona. The goal of the research is to better understand how rivers change due to interactions between water flow, sediment, and vegetation.
Read more
2013-11
Hands-on Learning at the Hilton Creek Fault in California UNAVCO provided an engineer and TLS equipment to assist with the UC Santa Cruz field camp this past summer in the Eastern Sierra Nevada. In addition to teaching classical field methods, many field camps are now also teaching students how modern tools can help to better visualize complex geological problems.
Read more
2013-06
UNAVCO upgrades COCONet cGPS sites in Jamaica In collaboration with Paul Williams of the University of the West Indies' Earthquake Unit and with transportation from the Jamaican Port Authority, UNAVCO engineers worked to upgrade COCONet sites CN10 and CN11 on the tiny islands of Morant Cay and San Pedro Cay, Jamaica. The sites are two of the hardest hit by corrosion.
Read more
2013-09
Troubleshooting COCONet cGPS sites in Panama A trip to Panama resulted in troubleshooting of two sites. In collaboration with Arkin Tapia, Nestor Vergara, and Eduardo Camacho at the Instituto de Geociencias in Panama City, Panama, site CN28 on Contadora Island was brought back online, followed by a site visit for work on communications and corrosion-proofing at CN20, one of the most corrosion-ridden sites in COCONet.
Read more
2013-08
Arctic Observing Networks: Collaborative Research: Sustaining and amplifying the ITEX AON through automation and increased interdisciplinary observations UNAVCO is supporting the ITEX project with terrestrial LiDAR Scanning (TLS) and GPS survey equipment. The goal of this project is to maintain the existing ITEX AON in Barrow, AK and increase the applicability of the data collected for the greater scientific community.
Read more
2013-10
UNAVCO installs COCONet cGPS site in Trinidad UNAVCO worked in collaboration with personnel at UWI, both in the seismic and surveys and lands departments, to complete the new GPS site in Toco, a small town situated along the remote north east coast of Trinidad.
Read more
2013-10
UNAVCO reestablishes a continuous GPS/MET site on the island of Roatan With assistance from students Jose Eveline, Guillermo Antonio Lopez, Antonia Sarahi Martinez, and Estefania Kury (all of the Universidad Politécnica de Ingeniería (UPI) Tegucigalpa), Honduras, UNAVCO reestablished a continuous GPS/MET site on the island of Roatan.
Read more
2013-10
UNAVCO installs COCONet cGPS site in Aruba By collaborating with the Meteorological Department of Aruba, UNAVCO engineers were able to install another cGPS site in the Caribbean.
Read more
2013-10
Terrestrial Laser Scanning (TLS) monitors life cycle of icy debris fans In 2006, while collecting samples of rock, Bucknell University researchers Craig Kochel and Rob Jacob discovered landforms in the Wrangell Mountains of Alaska that had previously been uncharacterized. These newly discovered landforms were named icy debris fans due to similarities with alluvial fans. An alluvial fan is a fan- or cone-shaped deposit of sediment crossed and built up by streams.
Read more
2013-08
UNAVCO helps incorporate GPS into introductory field course This marks the fourth year that UNAVCO has sent both a real-time-kinematic GPS system and a field engineer to assist with the GPS portion of a Volcanoes of the Eastern Sierra Nevada field course.
Read more
2013-06
The RESESS internship program kicks off its 9th year Aisha R. Morris is excited to join the UNAVCO team as an Education and Community Engagement Specialist, and Director of the RESESS Program. Most recently, Aisha worked in the office of Representative Rush Holt (NJ-12) as the 2011-2012 William L. Fisher Geosciences/American Association for the Advancement of Science (AAAS) Congressional Science Fellow. Prior to her AAAS Fellowship, Dr. Aisha Morris was an Alliance for Graduate Education and the Professoriate Postdoctoral Fellow at Syracuse University.
Read more
2013-05
COCONet station installed in Anguilla With assistance from the Anguillan government, UNAVCO installed a continuous GPS/MET site in Anguilla, one of the most northerly of the Leeward Islands in the Lesser Antilles, lying east of Puerto Rico and the Virgin Islands, and directly north of Saint Martin.
Read more
2013-05
COCONet station installed near Anegada Passage Puerto Rico and the northern Virgin Islands define the eastern terminus of the Greater Antilles, which extend eastward from offshore eastern Central America to the Lesser Antilles volcanic arc and mark the boundary between the Caribbean and North America plates.
Read more
2013-05
Three continuous GPS sites constructed in Panama for COCONet UNAVCO staff installed 3 new COCONet continuous GPS/MET sites in Panama, which complement the previously installed CN33 (ca. November 2011) continuous GPS/MET site. A total of 4 new COCONet cGPS and meteorological sites (CN20, CN28, CN33, and CN34) are now operational in Panama.
Read more
2013-04
Characterizing Forest Structure for Snow Prediction using Terrestrial Laser Scanning Seasonal snowpacks are difficult to measure and model in complex forested terrain. These measurements are necessary in order to reliably predict weather, climate, and water resources in much of the western U.S. The interactions between local vegetation structure and climate play a central role in the accumulation and ablation of snow, but it remains challenging to represent snowpack processes and distributions at the scales that land surface models are typically applied.
Read more
2013-04
Strainmeters capture strain transients following the M4.7 March 2013 Anza Earthquake On March 11 2013 a M4.7 earthquake occurred in the Anza section of the San Jacinto fault (SJF) zone. The event was typical for the region, it occurred at a depth of 13.1±0.5 km and the focal mechanism indicated strike-slip motion on an 82° dipping fault.
Read more
2013-04
GNSS station installed on Brown Mountain, South Georgia Island The first continuous GNSS station on South Georgia Island was installed in February 2013 as a collaboration between the University of Luxembourg, the British National Oceanographic Centre, the British Antarctic Survey, and UNAVCO.
Read more
2013-04
COCONet stations in Mexico provide links between North American and Caribbean plates Two sites at the most southern part of the North American continental plate were installed in Mexico as part of the ongoing Continuously Operating Caribbean GPS Observational Network (COCONet).
Read more
2013-03
Further Terrestrial Laser Scan (TLS) Measurements on Toutle River The Toutle River is a 17.2-mile (27.7 km) tributary of the Cowlitz River in the U.S. state of Washington. It rises in two forks merging near Toutle below Mount St. Helens and joins the Cowlitz near Castle Rock, 20 miles (32 km) upstream of the larger river's confluence with the Columbia River. The river was altered by the 1980 eruption of Mount St. Helens and subsequent flows of ash and other debris.
Read more
2013-02
Terrestrial Laser Scan (TLS) of Handcart Gulch explores rock glaciers Handcart Gulch, named for the handcarts that Colorado miners used to pull outfits up the steep valley walls, was a rowdy area that reached its peak in 1876-77 with several hundred miners in the area. Today, a cabin and some ruins mark the site. It is also the site of a terrestrial laser scanning project that hopes to shed light on the geological faulting of the region.
Read more
2013-02
UNAVCO uses Terrestrial Laser Scanning (TLS) to examine bluff beneath 12th century castle In the Burggrafenamt district of South Tirol, Italy, a castle sits on a hill, named by the ancestral seat of the Counts of Tirol during the 12th century. The castle has witnessed a range of historical events, through the Habsburg dynasty, the Napoleonic Wars, two world wars, and now embodies its modern role as the South Tirolean Museum of History.
Read more
2013-02
RAPID: Nicoya Earthquake After-event Response (NEAR) 2012 Megathrust earthquakes occur at subduction zones at convergent boundaries, where one tectonic plate is subducted by another. These earthquakes are among the most powerful and destructive natural hazards on the planet.
Read more
2013-02
UNAVCO connects communications with two AfricaArray GPS sites In July of 2012, UNAVCO engineers traveled to both Mongu and Itezhi-tezi, Zambia to upgrade continuous GPS sites by affixing data communication systems. The Itezhi-tezhi GPS site received a BGAN satellite communication system and the Mongu site received a cellular modem. This allows both sites to transmit data on a regular basis to the UNAVCO facility in Boulder, CO.
Read more
2013-01
M7.5 Earthquake 94 km W of Craig, Alaska On January 5th, 2013, at 08:58 UTC, a magnitude 7.5 earthquake shook the ocean floor off the west coast of southeastern Alaska. A tsunami was generated, but the waves were only about six inches above normal and the tsunami warning was canceled. The earthquake was followed by six aftershocks as big as M5.1, and came nearly four hours after the initial quake. Houses shook and items were moved around, but there were no injuries reported.
Read more
2013-01
Delving into the East African Rift System in Three Dimensions During July of 2012, 10 new continuous GPS stations were installed around the Lake Malawi region. Lake Malawi is the southernmost lake in the East African Rift system, located between Malawi, Mozambique, and Tanzania. The third largest and second deepest lake in Africa, it is also the ninth largest in the world. Working in Africa always presents many challenging logistics for large-scale projects and this was no exception.
Read more
2013-01
Exploring arc volcano processes with the Soufriere Hills Volcano, Montserrat In April of 2012, two engineers from UNAVCO conducted a maintenance trip to the Island of Montserrat to service four stations that house continuous GPS systems and borehole strain meters.
Read more
2013-01
Improving Our Understanding of Carbon Sequestration Monitoring with GPS Tim Dixon of the University of South Florida is working to develop a new, integrated approach for monitoring, verification, and accounting of carbon dioxide (CO2) sequestered in deep geologic repositories. Interest in terrestrial carbon sequestration has increased in an effort to explore opportunities for climate change mitigation.
Read more
2012-12
Join us at AGU! (2012) Come find us at Booth #118 in San Fransisco at the annual AGU meeting.
Read more
2012-11
COCONet GPS Network Expansion: Redonda Island Blurb: As part of the ongoing COCONet installation phase, one continuously operating GPS site was installed on Redonda Island in the West Indies of the Caribbean ocean. The island belongs to the nation of Antigua but its nearest neighbor is Montserrat, located 12 miles due southeast.
Read more
2012-11
COCONet GPS Network Expansion: Colombia In August and September of 2012, UNAVCO supported the installation of four new cGPS stations in Colombia as part of the ongoing COCONet installation phase. Three of the new sites are located along the northern coast of the country and one site is on the island of Providencia (belonging to Colombia), situated 140 miles off of the eastern coast of Nicaragua.
Read more
2012-11
The BanglaPIRE Project: Exploring the geologic and hydrologic processes that shape the Bangladesh region Three of the world’s largest rivers, the Ganges, the Brahmaputra, and the Meghna, converge in the country of Bangladesh and dump one gigaton of sediment there annually to form the world’s largest delta (The Ganges-Brahmaputra-Meghna Delta, or GBMD). This delta overlies the rapidly subsiding junction of three tectonic plates.
Read more
2012-11
UNAVCO provides improved access to SAR satellite imagery UNAVCO has unified access to SAR archive interfaces, allowing researchers to search one database for all available imagery. The new SAR database with geospatial searches allows for more efficient searches and automated downloading, saving time and effort for researchers looking for SAR images.
Read more
2012-11
RESESS Interns Take on the Challenge of Research Imagine doing a summer research project and submitting an abstract to a national meeting in just over two months. This past summer, 17 college students converged in Boulder, Colorado to participate in the RESESS internship and take on this challenge.
Read more
2012-11
Join us at GSA! (2012) Come find us at Booth #1110 in Charlotte, North Carolina at the annual GSA meeting
Read more
2012-11
PBO Data and Preliminary Ground Motion Measurements from the August 2012 Brawley, California Seismic Swarm A seismic swarm near Brawley, CA, south of the Salton Sea, began on August 26, 2012, at 04:30 GMT (August 25, 21:30 PDT). Over 500 events were recorded by the Southern California Seismic Network by August 29. The two largest earthquakes in the swarm were a M5.3 at 19:31 August 26 (12:31 PDT) and a M5.5 at 20:57 August 26 (13:57 PDT). Many of the events were reported felt across much of southern California. The town of Brawley is located less than 5 km (3 miles) from the swarm, and minor damage was reported.
Read more
2012-09
Community Geophysical Event Response to the 5 September 2012, Mw=7.6 Nicoya Peninsula, Costa Rica Earthquake On Wednesday, September 5, 2012, at 14:42:07 UTC, a magnitude 7.6 earthquake struck roughly 40 km (25 miles) below the surface of the Earth, 10 km (6.2 miles) ESE of the city of Nicoya, Costa Rica. This earthquake occurred beneath the Nicoya Peninsula of Costa Rica as the result of thrust faulting on the subduction zone interface between the subducting Cocos and overriding Caribbean plates.
Read more
2012-09
TLS survey campaign of Thrihnukagigur Volcano, Iceland In late June of 2012, UNAVCO provided continued support for Dr. LaFemina with a second TLS survey campaign in Iceland. A Leica C10 scanner was used to scan the inner chamber, shaft and surrounding area above the Thrihnukagigur Volcano. Over the course of 7 days, 18 scan positions were occupied and over 500 million points collected. In comparison, previous surveys of the magma chamber using land-surveying equipment produced only 1200 points.
Read more
2012-06
Glaciological dynamics of a debris-covered alpine glacier using Terrestrial Laser Scanning: Potential impacts for water resources and natural hazards As part of ongoing research that seeks to understand the implications of glacier retreat at Volcán Chimborazo, Ecuador, researchers from Ohio State University are attempting to quantify both the rate and extent of glacier retreat on the mountain in recent years.
Read more
2012-06
Hydrology at the Base of the Greenland Ice Sheet What role does water play in the movement of the vast Greenland Ice Sheet? This integrated measurement and modeling project is a comprehensive investigation of this very question. Conditions at the base of the glacier will be directly measured in six boreholes drilled to the bed, with two holes at each of three sites. Surface melt and spatial gradients in ice velocity will be quantified to enable detailed comparison between melt water forcing, basal hydrologic conditions, and ice flow dynamics.
Read more
2012-06
EarthScope and UNAVCO host exhibit at 2012 USA Science and Engineering Festival The second USA Science and Engineering Festival took place in Washington, D.C. April 27-29, 2012. Over 150,000 people participated during the 3 day event, with over 3,000 interactive exhibits, more than 100 stage shows and 33 author presentations to explore.
Read more
2012-04
White Sands Dune Migration UNAVCO provided support for Dr. Ryan Ewing's (University of Alabama) first TLS survey campaign to the White Sands National Monument. Scanning was carried out over the course of four days in three separate locations within the monument.
Read more
2012-03
2011-12 Antarctic Season Highlights During the 2011-12 Antarctic field season, UNAVCO deployed 5 engineers, 88 GPS receivers, 3 Terrestrial Laser Scanner (TLS) instruments, and a large volume of ancillary equipment in support of a record 34 PI science projects. Including 2 more field engineer and 14 receiver deployments as part of the POLENET project...
Read more
2012-03
The Polar Earth Observing Network (POLENET) 2011/2012 Field Season The POLENET (Polar Earth Observing Network) project focuses on collecting GPS and seismic data from autonomous systems deployed at remote sites spanning much of the Antarctic and Greenland ice sheets. GPS and seismic measurements together provide a means to answer critical questions about ice sheet behavior.
Read more
2012-02
Nicoya Peninsula continuous GPS network telemetry upgrades and COCONet network expansion The Nicoya Peninsula continuous GPS network consists of 18 remote sites distributed mostly in the forearc of the Cocos subduction zone in northwest Costa Rica. The network is designed to measure transient surface deformation above the seismogenic plate-boundary interface. The network was established and expanded in several stages beginning in 2006.
Read more
2012-01
Installation of Two Deep Drilled-Braced Monuments and One Short Drilled-Braced Monument at The Goddard Geophysical and Astronomical Observatory In 2011, a collaborative NASA-funded Space Geodesy Project was initiated. Jointly operated by the NASA Goddard Space Flight Center and Jet Propulsion Laboratories, the project is focused on constructing, operating, and maintaining a NASA Space Geodetic Network (NSGN) of integrated, multi-technique next generation space geodetic observing systems.
Read more
2012-01
Broadband Geodetic and Seismological Response to the Mineral, VA Earthquake Broadband Geodetic and Seismological Response to the Mineral, VA Earthquake In October 2011, engineers from the Plate Boundary Observatory began work on an NSF-funded RAPID project related to the study of the post-rupture crustal relaxation due to the M5.8 earthquake that struck near Mineral, VA on August 23, 2011. The project consisted of the reconnaissance, permitting, construction, and data communications for two permanent GPS stations near Louisa, Virginia, close to the epicenter of the earthquake. UNAVCO field engineers assisted the Principal Investigator with all the components of the fieldwork. The project was completed in November 2011.
Read more
2011-12-12
High Rate Strain and Tilt Data Products High Rate Strain and Tilt Data Products Beginning October 2011, UNAVCO will start releasing high-rate (1-sps) processed borehole strainmeter data for geophysical events of special interest, e.g., earthquakes, tsunamis, volcanic events or in response to community requests. The high rate strain data set will include areal and shear strain, earth tide plus ocean load time-series, barometric pressure corrections, plus pore pressure and tiltmeter data if they are collected at the site. These new data products will be available from the UNAVCO PBO web page under the Geophysical Event section. The first high rate data sets available are for the M9, March 11, 2011, Tohoku Earthquake and the M6.4, 2011 September 9, Vancouver Island Earthquake.
Read more
2011-11-14
New PBO GPS Velocity Field New PBO GPS Velocity Field UNAVCO has released a new realization of the Plate Boundary Observatory (PBO) network GPS velocity field, reflecting data acquired through May 2011.
Read more
2011-08-30
PBO Strainmeters Record the 2011 ETS Cascadia Episodic Tremor and Slip Event PBO Strainmeters Record the 2011 ETS Cascadia Episodic Tremor and Slip Event A few months earlier than anticipated, the 2011 Cascadia Episodic Tremor and Slip event may be underway. Based on the start time of last year's event, this year's tremor was expected to begin late October 2011. An increase in tremor south of Puget Sound around August 7th, however, and its propagation northeastwards under the Olympic Peninsula over the past 10 days has caused speculation that this is the main 2011 ETS event.
Read more
2011-08-22
Community Geophysical Event Response to the 23 August 2011, Mw=5.8 Virginia Earthquake On Tuesday, August 23, 2011, at 17:51:04 UTC, a magnitude 5.8 earthquake struck roughly 6 km (3.7 miles) below the surface of the Earth, 8 km (5 miles) southwest of Mineral, Virginia. The earthquake occurred within the Central Virginia Seismic Zone, which has produced many small and moderate earthquakes throughout recorded human history in the area, including a magnitude 4.8 in 1875 and a 4.5 event in 2003.
Read more
2011-08
UNAVCO Community Response to the 11 March 2011, Mw=9.0 Tohoku, Japan Earthquake and Tsunami A magnitude 9.0 earthquake occurred at 02:46:23 PM local time on March 11, 2011, near the east coast of Honshu, Japan. Five minutes in duration, it triggered a tsunami of more than 10 m in height, causing immense damage along the northeast coast of Japan.
Read more
2011-03
The Magnitude 6.3 South Island New Zealand Earthquake, Feb. 21, 2011 A magnitude 6.3 earthquake occurred Tuesday, February 22, 2011, at 12:51:43 PM local time (Feb. 21, 2011 at 23:51:43 UTC), close to Christchurch, New Zealand. No tsunami was reported. At least 160 people died with many more left missing.
Read more
2011-03
Caribbean GPS Network to Aid Earthquake and Hurricane Forecasting A proposed network of GPS stations in the pan-Caribbean region will aid the monitoring, understanding, and prediction of earthquakes, hurricanes, flooding, volcanoes, and landslides.
Una nueva red expandida de estaciones de GPS en la región del Caribe va a ayudar con el monitoreo, entendimiento, y predicción de terremotos, tsunamis, huracanes, inundaciones, volcanes, y deslizamientos de tierra.
Read more
2011-01
EarthScope Project: Measurements of Crustal Deformation in the Rio Grande Rift Region The Rio Grande Rift GPS Experiment, funded by the National Science Foundation's EarthScope program, provides a regional enhancement to the broader Plate Boundary Observatory (PBO) network. Its purpose is to measure relative motions at the Earth's surface and determine how the Rio Grande Rift region in Colorado and New Mexico is deforming.
Read more
2011
PLUTONS GPS Installations, Part 3 PLUTONS is an integrative geophysical, geochemical, and geomorphological study involving researchers from many US, Canadian, South American, and British institutions. The project aims to uncover evidence for active mid-crustal intrusion and crustal formation at Uturuncu and Lazufre volcanoes, located in the central Andes.
Read more
2011-11
Haiti GPS Network Following the earthquake of Jan 2010, 6 CGPS stations were installed in key locations around Haiti to measure the after effects and ongoing activity in the region. Of these 6 stations, only 1 was transmitting data back to UNAVCO reliably by the middle of 2011. It was determined from reconnaissance trips by local collaborators that the data transmission issues were due, for the most part, to system failures and one was actually caused by theft of the entire system. With that information in hand, a maintenance trip was deemed necessary.
Read more
2011-11
Geodynamics of Ridge Collision on the Caribbean Plate and Panama Block: Part 2 Network Completion During a two week trip in November 2011, two additional continuous GPS stations were installed to complete a network designed to measure the deformation of the Panama tectonic block. This project is part of ongoing research on the geodynamics of the plate tectonic regiem in Central America. One of these stations is also part of a larger National Science Foundation project called CocoNet.
Read more
2011-11
Carbon Sequestration monitoring using GPS Carbon Sequestration is a process for mitigating the contribution to global warming by capturing the excess CO2 emitted from fossil fuel burning power plants (and other industrial facilities). The CO2 is captured at its source and then injected into depleted oil and gas reservoirs.
Read more
2011-10
GPS as a snow sensor: Doc's Meadow installation Snow is an important component of the climate system and a critical storage component in the hydrologic cycle. However, in situ observations of snow distribution are sparse, and remotely sensed products are imprecise and only available at a coarse spatial scale. While GPS geodesists have long recognized that snow can affect a GPS signal, it was only recently shown that a GPS receiver placed in a standard geodetic orientation can be used to measure snow depth.
Read more
2011-10
Santorini, Greece GPS Network Installations and Upgrades Santorini is one of a group of five islands belonging to a partially submerged caldera in the Aegean Sea. The volcanic system responsible for the formation of the caldera is currently still active and last erupted in 1950.
Read more
2011-09
Denali Dinosaur Dance-floor: Capturing a Mega-tracksite with Terrestrial Lidar for science, education and preservation Over two weeks in August, 2011 a team of scientists from three countries and four institutions collaborated on a field expedition to map, collect samples and identify dinosaur footprints and other trace fossils within a Late Cretaceous age outcrop located in Denali National Park. UNAVCO provided, equipment, logistical, and technical support for collecting a terrestrial lidar data set of the exposed dinosaur "dance floor."
Read more
2011-08
Quantifying fluvial erosion rates on Cascade Volcanoes The goal of the project is to develop data sets that can be used to model erosion and deposition along rivers draining two Cascade volcanoes, Mt. Rainier and Mount St. Helens National Volcanic Monument. The project has two components, one focusing on processes of sedimentation on Tahoma Creek on Mt. Rainier, the other focusing on processes of erosion on the North Fork Toutle River near Mt. St Helens.
Read more
2011-08
San Jacinto Fault Scanned with a Terrestrial Laser Scanner (TLS) Collecting geologic evidence from major pre-historic earthquakes provides clues to Earth's ancient seismic events. One method of data collection is to dissect a portion of ground across a known active fault, and catalogue, measure, and date the sediment left after each earthquake. Dr. Rockwell and his team are searching for the paleoseismic history of the southern San Jacinto Fault, namely the Clark strand.
Read more
2011-06
Shetland Islands Climate and Settlement Project 2011 Researchers from several colleges in Maine, including Bates College, the University of Maine and the University of Southern Maine, are working together on a multidisciplinary and international 3-year NSF project focusing on the severe climate transformations of the Shetland Islands, the most northern of the Scottish Isles.
Read more
2011-06
Mt. Pinatubo Terrestrial Laser Scanning Mt. Pintaubo (Philippines) erupted in 1991 and deposited up to 6km cubed of pyroclastic material in the drainage basins of the volcano. One of these drainages, The Pasig Potrero, is a river system that flows off the eastern flank of the volcano. 14km downslope of the summit crater, the river expands into a wide, braided alluvium over half a kilometer in width.
Read more
2011-06
First CocoNET Continuously Operating GPS Station Installed COCONet seeks to understand the factors that control earthquake and hurricane hazards by adding 50 high-precision permanent GPS stations to 50 existing ones. These instruments are able to detect millimeter changes in the movement of Earth's crust and atmospheric water vapor that helps predict the path of hurricanes.
Read more
2011-06
Geodynamics of Ridge Collision on the Caribbean Plate and Panama Block During a three week trip in May 2011, a team consisting of members from Penn State University (PSU), the Instituto de Geociencias at the Universidad de Panama (IGC), and UNAVCO constructed four permanent GPS monuments with power and telemetry systems. Additional reconnaissance for three or four new monuments was completed for a future trip.
Read more
2011-05
Volcanic Flank Deformation and Stability: Arenal Case Study - Facility Highlights 2011 The Arenal Volcano, located in north-western Costa Rica, about 90 km northwest of San José, has been one of the ten most active volcanoes in the world until recently. Measuring 1,633 metres (5,358 ft), it is conically shaped with a crater spanning 140 metres (460 ft). As one of the youngest and historically most active volcanoes of all the mountains in Costa Rica, it had remained largely unexplored until the 1930s, with the first documented expedition taking place in 1937 to reach the summit.
Read more
2011-03
Terrestrial Laser Scanning (TLS) Surveys in Everglades National Park Terrestrial laser scanning (TLS) surveys were conducted in March 2011 at four LTER (Long Term Ecological Research) study sites in Everglades National Park. TLS measurements are used to construct the vegetation structure and above ground biomass in 4 disparate vegetation communities. The vegetation community is defined by mangrove development and taxonomy at the site.
Read more
2011-03
Antarctic Program Support 2010-2011 During the 2010-11 Antarctic field season the UNAVCO polar group supported an unprecedented 33 individual PI-based science campaign projects. One hundred twenty receivers and 28,000 pounds of supporting gear was sent to the continent for campaign support, including thirty five new NetR9 systems and twelve netR8's. Nineteen of the NetR9 receivers remain on the ice to support long term data collection at the Whillans Ice stream (WISSARD) and the Byrd Glacier.
Read more
2011-02
POLENET 2010/11 Four continuous GPS stations were installed as part of the POLENET Antarctica network during the 2010/11 field campaign. Three planned stations remain uninstalled due to inclement weather in West Antarctica, and one station remains uninstalled due to lack of suitable bedrock site in the target area.
Read more
2011-02
Join UNAVCO at the 2011 AGU Fall Meeting The AGU Fall Meeting is expected to draw a crowd of over 18,000 geophysicists from around the world. The Fall Meeting provides an opportunity for researchers, teachers, students, and consultants to present and review the latest issues affecting Earth, planets, and their environments in space. This meeting will cover topics in all areas of Earth and space sciences.
Read more
2011-11
UNAVCO Hosts Workshop for Undergraduate Reserach Internship Leaders Leaders of NSF-funded internship programs (called "Research Experiences for Undergraduates" (REUs)) in the Geosciences Directorate gathered together in San Jose on October 26th and 27th, 2011, for a workshop.
Read more
2011-11
Drilling into the San Jacinto Fault Drilling into the San Jacinto Fault The Plate Boundary Observatory (PBO) worked hard in the fall of 2010 to install instrumentation in deep boreholes in the San Jacinto Fault area of southern. The area of focus was in the region of the town of Anza, located roughly halfway between the Salton Sea and the city of Riverside, California.
Read more
2010-12-20
PBO Responds to Magnitude 8.8 Chile Earthquake PBO Responds to Magnitude 8.8 Chile Earthquake A magnitude 8.8 earthquake occurred on February 27th, 2010 at 3:34 AM local time (06:36 UTC) off the coast of the Maule region of central Chile (Figure 1). Intense shaking lasted for about three minutes and a tsunami generated in the Pacific Ocean.
Read more
2010-05-16
New EarthScope Airborne LiDAR Data Products from California and Washington State Released in January 2010 New EarthScope Airborne LiDAR Data Products from California and Washington State Released in January 2010 New EarthScope airborne LiDAR data products from California and Washington state were announced in January 2010. With this release, DEM tiles and KML files from all southern and eastern California targets are now available, including faults in the Mojave (Lenwood, Helendale, Calico, Blackwater), eastern California (Panamint, Tin Mtn, Mud Hills, Hunter Mtn, Owens) and San Cayetano.
Read more
2010-05-04
Yellowstone Earthquake Swarm Observed by PBO Strain and Seismic Network Yellowstone Earthquake Swarm Observed by PBO Strain and Seismic Network Beginning Jan 17th, 2010 at about 1:00 PM (MST) a significant swarm of earthquakes started in the Yellowstone area located about 16 km northwest of Old Faithful. According to the Yellowstone Volcano Observatory (YVO), "swarms have occurred in this area several times over the past two decades." As of Feb 5th, 2010 there have been 1778 recorded events, with the largest single event having a magnitude of 3.8 and the cumulative magnitude of the swarm near magnitude 4.4.
Read more
2010-03-05
Gorda Earthquake Recorded in PBO GPS 15-second Time Series Gorda Earthquake Recorded in PBO GPS 15-second Time Series The January 10, 2010 M6.5 Gorda earthquake offshore California's Cape Mendocino occurred within 50 km of four GPS stations in the Plate Boundary Observatory (PBO) network. Static processing of data from these sites by the PBO analysis centers and the US Geological Survey has revealed up to 1 cm of primarily eastward displacement of these sites.
Read more
2010-02-26
PBO GPS Stations 'Capture' Magnitude 6.5 Earthquake, Northern California PBO GPS Stations 'Capture' Magnitude 6.5 Earthquake, Northern California On Jan 9, 2010, a Magnitude (M) 6.5 earthquake occurred offshore of Northern California ~ 30 miles WSW of Eureka, CA (Figure 1). As reported by the USGS, the event occurred within the Gorda Plate on a near vertical fault plane oriented ~ N 47 E.
Read more
2010-02-18
Borehole Strainmeters Observe M4.9 Baja Earthquake Borehole Strainmeters Observe M4.9 Baja Earthquake The Borehole Strainmeter (BSM) stations in Southern California observed an interesting sequence of earthquakes located in the Baja region on 12/30/2009. As with previous larger magnitude events there are smaller but with visible areal and shear strain signals.
Read more
2010-02-07
Akutan Island GPS Update Akutan Island GPS Update The tiny Aleutian village of Akutan, perched precariously under Akutan volcano, hosts one of the most important data telemetry sites in the entire Plate Boundary Observatory (PBO) network. Data from 18 stations converge in this village where they are uploaded through the Internet to the PBO Archive in Boulder.
Read more
2010-01-28
Summer Internship a Success Imagine having the chance to do mini grad school while still an undergraduate and doing it with extra support. In the RESESS internship this summer, college students did geoscience research with lots of encouragement from mentors and peers. Research topics ranged from looking at earthquake-triggered landslides to finding geologic faults to looking at zircons affected by a huge asteroid impact.
Read more
2010-11
UNAVCO Presents LiDAR Demonstration on Capitol Hill UNAVCO's David Phillips gave a Terrestrial LiDAR Scanning (TLS) demo on Capitol Hill in Washington, DC, as part of the 15th Annual Science-Engineering-Technology Congressional Visits Day (CVD) and LaserFest Reception. Phillips performed LiDAR scans of several congressional representatives and other attendees at an evening reception on Wednesday, April 28, 2010.
Read more
2010-04
Teaching Geodesy in the 21st Century - An "On the Cutting Edge" and UNAVCO Workshop In March of 2010, UNAVCO Education and Outreach staff and collaborators held a workshop to help college-level teachers incorporate geodesy and new teaching techniques into their courses. Teaching Geodesy in the 21st Century - An On the Cutting Edge - UNAVCO Workshop, drew sixteen enthusiastic and engaged professors, teachers, a post doc, and graduate student from around the country to Boulder, CO.
Read more
2010-04
UNAVCO Hosts Online GPS Workshop for Faculty in Texas Using online tools, UNAVCO Education Specialist Shelley Olds facilitated a three-hour workshop entitled GPS Geodesy as Windows on Earth: Discoveries using GPS and other Geodetic Techniques on February 3, 2010 during the Earth and Space Science 4X4 series of workshops provided by the Region 12 Education Center in Central Texas.
Read more
2010-02
In the News: UNAVCO Community Science is 'What's Hot' Recent tectonic activity around the world has sparked a rise in news coverage regarding the UNAVCO science community. We'd like to take this opportunity to remind you how to stay in touch with UNAVCO news. We update the UNAVCO Newsroom with recent articles as they come in.
Read more
2010-01
Join UNAVCO at the 2010 AGU Fall Meeting The AGU Fall Meeting is expected to draw a crowd of over 18,000 geophysicists from around the world. The Fall Meeting provides an opportunity for researchers, teachers, students, and consultants to present and review the latest issues affecting Earth, planets, and their environments in space.
Read more
2010-12
Cascadia Project Recognized in "100 Recovery Act Projects" Report The National Science Foundation's Earth Sciences (EAR) Division received $5M in facility-related investment as a part of the 2009 American Recovery and Reinvestment Act, or ARRA. Some of this is being awarded to UNAVCO to upgrade the communications at GPS sites in the Pacific Northwest.
Read more
2010-10
The Scientific Value of High-Rate, Low-Latency GPS Data; A White Paper [PDF] Ongoing upgrades of western U.S. GPS networks to high-rate, low-latency data transmission capabilities has drawn attention to the interest that the scientific community has in these data. GPS provides an essential complement to other geophysical networks (e.g. seismic, strain, gravity) because of its high precision, sensitivity to the longest period bands, its ease of deployment, and its ability to make measurements of displacement that are local to global in scale.
Download PDF »
2010-09
Community Geophysical Event Response to the Mw=7.0, Christchurch, New Zealand Earthquake, Sept. 3, 2010 A magnitude 7.0 earthquake occurred Saturday, September 3, 2010 at 04:35:46 AM local time, 50km to the west of Christchurch, New Zealand and 80-90km to the southeast of the Australia-Pacific plate boundary.
Read more
2010-09
Community Geophysical Event Response to the Mw=7.2 El Mayor-Cucapah Baja California, Mexico, Earthquake April 4, 2010 A magnitude 7.2 earthquake occurred at 3:40 p.m. PT on Sunday, April 4th, 2010, 39 miles (63 km) SSE of Calexico, CA, in the upper Baja California peninsula of Mexico. Tremors lasted 40 seconds causing extensive damage to buildings in the area. The earthquake has been named the El Mayor-Cucapah earthquake.
Read more
2010-04
Community Geophysical Event Response - Mw=8.8 Chile Earthquake Feb. 27, 2010 UNAVCO operates the NASA/GGN GPS station near Santiago (SANT), which is a high rate station set to log at 1 Hz (Fig. 12). SANT is located on the grounds of NASA's Santiago Tracking Station, 38 Km North of Santiago, Chile.
Read more
2010-02
Community Geophysical Event Response - Mw=7 Haiti Earthquake 1/12/2010 In response to community requests after the Mw=7 Haiti Earthquake 1/12/2010, UNAVCO has compiled data sets and is preparing campaign GPS and TLS hardware for anticipated deployment to the Haiti region.
Read more
2010-01
TLS Survey of Fourmile Canyon Wildfire Captures Post-fire Terrain Changes A wildfire occurred in Fourmile Canyon near Boulder, CO in September 2010. The fire provided scientists a rare opportunity to study the geomorphic processes that occur soon after large wildfires. Researchers from the US Geological Survey and the University of Colorado in Boulder, employ a terrestrial laser scanner (TLS) to map micro-scale geomorphic features within a small watershed in the burn-zone.
Read more
2010-12
PLUTONS Project (Part II) UNAVCO finished up its second round of field support for the PLUTONS project in early November of this year. PLUTONS is a collaborative effort involving The University of Alaska Fairbanks, Cornell University, Montana State University, Oregon State University, The University of Alberta, University of Bristol, UC Santa Cruz, and multiple organizations from Chile and Bolivia.
Read more
2010-11
GPS campaign of East African Rift Zone A GPS survey of the East African Rift Zone in Tanzania occurred over three weeks in August 2010. The project involved researchers, staff and graduate students from Purdue University (USA) and Ardhi University in Tanzania, with equipment, logistic and field support from UNAVCO.
Read more
2010-08
Goddard Geophysical and Astronomical Observatory UNAVCO Facility personnel traveled to Goddard's Geophysical and Astronomical Observatory (GGAO) located in Greenbelt, Maryland in order to setup two temporary GPS campaign systems over known marks as construction was commencing on the area that will be home to the next generation VLBI antenna.
Read more
2010-07
QUIN IGS/GGN Station Maintenance The GGN station located in Quincy, California recently went offline and a site visit was needed in order to restore its internet link. The station is accessed through the Mount Hough Ranger Station in Plumas County. The station is located on top of a hill, which can only be accessed through a locked gate which is shared with the Plumas County Repellars.
Read more
2010-06
PLUTONS Project The PLUTONS project is a NSF funded collaborative study including researchers from Cornell University, University of Alaska Fairbanks, Montana State University, Bristol University, UC Santa Cruz, Oregon State University, and the University of Alberta.
Read more
2010-04
St. Helena GNSS Station The St. Helena Island Meteo office is now home to a permanent GNSS station on the island. The station is providing a one second stream of GPS + GLONASS data on the newly constructed pillar monument. The installation of this station was a collaborative effort between NASA-JPL, UNAVCO, SEGAL (UBI,IDL) Portugal, and the St. Helena Meteo office.
Read more
2010-03
Brewster (BREW) GGN Station Maintenance Starting in 2007, the GGN station located in Brewster, Washington underwent a series of equipment upgrades including: installation of an Ashtech receiver running the latest firmware, CQ00, and installation of a new 2U rackmount computer running Fedora 4.
Read more
2010-11
Africa Array GPS Network Africa Array, initialized in 2004, is a project that aims to establish research and training programs in the geosciences for Africans, within Africa. The continent is rich in mineral, petroleum, and geothermal resources and demand for trained geoscientists to manage these resources is growing. However, this need is not being met.
Read more
2010-09
QUIN IGS/GGN Station Maintenance II The GGN station located in Quincy, California (QUIN) continued to exhibit communication problems after a site visit earlier this summer where it was determined that the pole supporting the dish was not sturdy enough and needed to be replaced. During this most recent visit, a new Hughes DW7000 VSAT system was installed in order to restore communications to the station.
Read more
2010-07
IGS Meeting 2010 During June 28 - July 2, 2010 the Newcastle University geodesy group hosted approximately 200 participants in the International GNSS Service (IGS) Workshop 2010 and the COST Action ES0701 Vertical Rates Symposium. The Workshop focused on the application and status of current IGS operations and possibilities for future improvements.
Read more
2010-07
SMAP Validation Project The SMAP (Soil Moisture Active & Passive) Validation project is funded by NASA with collaborators from the University of Colorado at Boulder and UCAR. The purpose of the SMAP Validation project is to provide an independent means to validate the results of the SMAP satellite mission using GPS signals received at ground-based sensor sites.
Read more
2010-05
Haiti Earthquake Response GPS Network PI Eric Calais acquired NSF RAPID funding immediately after the January earthquake in Haiti to conduct a GPS campaign in Port-Au-Prince and other towns in the region of the main fault. UNAVCO received part of this funding to provide equipment and engineering support for the installation of six permanent, continuously operating, GPS stations in Haiti (the first of which Calais installed himself).
Read more
2010-03
POLENET 2009/10 Seven continuous GPS stations were installed in Antarctica during the 2009/10 field campaign. It was not possible to install all 14 CGPS because of inclement weather in West Antarctica. Thirteen stations installed during the previous two seasons were visited to upgrade them to the latest designs and configurations and in several cases to repair and upgrade the sites.
Read more
2010-02
Sierra Negra GPS Network Upgrade (Final Phase) The second and final phase of the GPS network upgrade at Sierra Negra volcano on Isabella Island in the Galapagos was completed in November by a field team of four from U.S. and Ecuadorian institutions. The continuous GPS network has been operational since 2002 when six permanent sites were installed by UNAVCO.
Read more
2010-11
Circumpolar Active Layer Monitoring Network Ð CALM II Since the 1990s, the Circumpolar Active Layer Monitoring (CALM) program has conducted long-term studies of the response of the Arctic permafrost to climate change. Every summer, a certain depth of the top layer of the tundra's permafrost thaws and this is known as the "active layer."
Read more
2010-08
Chile Rapid Response Data Communications A great earthquake of magnitude 8.8 occurred on February 27, in Southern Chile. The Chilean earthquake caused a deadly tsunami, widespread property damage, and at least 521 casualties. This was the single largest event in the world since the December 26, 2004 magnitude 9.1 earthquake in Sumatra that also caused a deadly tsunami.
Read more
2010-07
Telica Volcano On any given day, approximately 15-30 volcanoes worldwide are either in eruption or show strong signs of unrest (e.g., anomalously high rates of seismic activity, ground deformation, or gas emissions). Volcanic activity, including high-altitude eruptions of ash or emission of large volumes of gas, poses a significant hazard to people and property in the United States and worldwide.
Read more
2010-03
Antarctic Program Support 2009-2010 During the 2009-10 Antarctic field season, the UNAVCO polar group supported 23 individual PI-based science campaign projects. Forty five receivers were sent to the continent for campaign support, including ten NetRS systems. Nine of these NetRS receivers remain on the ice to support long term data collection at WAIS divide under the upcoming WISSARD project, including one configured to relay data back to UNAVCO via Iridium modem.
Read more
2010-03
LARISSA 2010, Antarctica LARISSA: Larsen Ice Shelf System, Antarctica is a National Science Foundation funded initiative that brings an international, interdisciplinary team together to address a significant regional problem with global change implications, the abrupt environmental change in Antarctica's Larsen Ice Shelf System.
Read more
2010-04
Integration of TLS and Continuous GPS to Study Landslide Deformation Terrestrial Laser Scanning (TLS) and Global Positioning System (GPS) technologies provide comprehensive information of landslide deformation in the both spatial and temporal domains, which are critical to study the dynamics and kinematics of landslides.
Read more
2010-08
Using TLS to Improve Models of Volcano Conduit Processes In volcanology, diverse numerical models of conduit flow have been developed to relate the properties of these flows to processes that occur at the surface during eruptions. Conduit models incorporate varying degrees of complexity and account for the transport properties of magmas, steady-state or transient behavior, and conduit geometry (e.g., 1- to 1.5 D, variable width and erodable conduit walls).
Read more
2010-08
Introducing TLS to Undergraduate Geology Curricula During the summer of 2010, a pilot version of a week-long module designed to apply Terrestrial Laser Scanning (TLS) to various problems encountered while conducting field geology applications was embedded within the Indiana University G429 field course. The format followed that of a successful module developed to concentrate on surface and groundwater hydrology known as G429e.
Read more
2010-08
Measuring Above Ground Biomass and Vegetation Structure in the South Florida Everglades Wetland Ecosystem Worldwide, anthropogenic activities are disturbing and disrupting nutrient rich bio-diverse wetland ecosystems. Disturbance of the South Florida Everglades has been particularly acute, but difficult to quantify given its limited accessibility. Successful ecosystem monitoring requires the use of remote sensing.
Read more
2010-08
Join UNAVCO at the 2009 AGU Fall Meeting Join UNAVCO at the 2009 AGU Fall Meeting The AGU Fall Meeting is expected to draw a crowd of over 16,000 geophysicists from around the world. The Fall Meeting provides an opportunity for researchers, teachers, students, and consultants to present and review the latest issues affecting Earth, planets, and their environments in space. This meeting will cover topics in all areas of Earth and space sciences.
Read more
2009-12-07
GPS Data Used to Measure Snow Depth GPS Data Used to Measure Snow Depth GPS data from the Plate Boundary Observatory's station at Marshall Field in Colorado is being used by Kristine Larsen at the University of Colorado at Boulder to measure snow depth around the station monument.
Read more
2009-11-28
GGN North Liberty Station Upgrade - Phase 2 The North Liberty, Iowa (NLIB), Global GNSS Station is one of the longest running GPS stations (March, 1993) in the GGN network, as well as being a reference frame site. The antenna mount is a JPL ring mount, in which the choke ring sits (see Figure 2). One main issue in upgrading the station is that this mount prevents the use of a calibrated antenna/dome combination, which is now a requirement of the IGS. In order to replace the failing AOA choke ring, a new mount was designed, fabricated, tested, and installed.
Read more
2009-11
Year 3: Afar, Ethiopia GPS campaign 2009 was the third year of UNAVCO support for the Afar Rift project, located in eastern Ethiopia. A 60 km long dyke opened up in the Dabbahu segment in 2005 that marked the beginning of a continuing rifting episode. New intrusions, with associated seismic activity, have occurred regularly every year thereafter, making the rift one of the most active in the world.
Read more
2009-11
PBO Data: Strain Offsets Following Passage of Seismic Waves PBO Data: Strain Offsets Following Passage of Seismic Waves The EarthScope Plate Boundary Observatory strainmeters in Southern California recorded significant strain offsets following the passage of seismic waves from the M6.9 Gulf of California earthquake on August 3.
Read more
2009-09-11
Long-Range Geodesy Community Planning In response to new and emerging research opportunities in geodesy and its interdisciplinary applications, the geodesy community is preparing a written plan in a Grand Challenges format, identifying emerging science questions, required workforce development and diversity, and needed instrumentation and facilities. The intention is to have a draft by AGU and final plan by January 2010. This plan will inform a number of other national science planning initiatives anticipated in 2010.
Read more
2009-09
Niwot Ridge GPS installation One continuously operating GPS station was installed up on Niwot ridge in early September. PI Kristine Larson will be using the data from the site to determine if GPS antennas (set in standard geodetic orientations) will be suitable for measuring changes in snow depth. These changes can be tracked in the corresponding multipath modulation of the GPS signal.
Read more
2009-09
Goddard Geophysical Astronomical Observatory (GGAO) - Demonstration and Reconnaisance UNAVCO Facility and PBO personnel traveled to Goddard's Geophysical and Astronomical Observatory (GGAO) in September to do reconnaissance in preparation for the installation of two deep drill braced monuments. The current GNSS monument, GODE, will have to be abandoned once the new VLBI antenna is installed in 2010 as part of the first prototype 'NASA Supersite.'
Read more
2009-09
ICESat Calibration UNAVCO personnel took part in a high-resolution GPS survey of the eastern lobe of the Salar de Uyuni in Bolivia, to provide ground truth for NASA's Ice, Cloud, and land Elevation Satellite (ICESat) laser altimeter. A prime objective of the ICESat mission is to acquire multi-year elevation data for Antarctica and Greenland in order to quantify changes in the ice sheets associated with climate change.
Read more
2009-09
GGN North Liberty Station Upgrade - Phase 1 The North Liberty Global GNSS Station (NLIB) has been operating with the same AOA choke ring antenna since March 5, 1993. This is one of the longest running core reference frame stations. The antenna has begun to show signs of degradation and the JPLA dome was shattered sometime last year, both must be replaced.
Read more
2009-09
RESESS Celebrates 5 Years of Research, Mentoring, and Community Research Experiences in Solid Earth Science (RESESS) celebrated five years of research, mentoring, and community on August 6, 2009. We acknowledged the 2009 RESESS participants' achievements during a morning colloquium and afternoon poster session together with students participating in Significant Opportunities in Atmospheric Research and Science (SOARS).
Read more
2009-08
InSAR Data Shows Evidence of Coseismic Deformation - Gulf of CA Earthquake, August 3, 2009 Across the central Gulf of California the Pacific-North America plate boundary is localized in the Ballenas channel, which separates Isla Angel de la Guarda from the Baja California Peninsula (BAJA). At about 45 mm/yr, the Ballenas Transform represents a fast moving strike-slip fault.
Read more
2009-08
Red Lakes Peatland Network Expansion Three new continuously operating GPS stations were added to an existing network of 11 GPS stations in the Red Lake Peatlands of northern Minnesota. The three new sites are installed in a triangular formation, each approximately 20 meters apart. Nested within the GPS triangle are 31 radially arranged instrumented piezometers.
Read more
2009-08
GeoEarthScope LiDAR Release - Yellowstone GeoEarthScope LiDAR Release - Yellowstone GeoEarthScope recently announced the availability of new airborne Light Detection and Ranging (LiDAR) data products from the Intermountain Seismic Belt project. This release includes high resolution LiDAR topography data collected in tectonically active regions of Utah and Wyoming, including Yellowstone and Grand Teton National Parks and the Nephi segment (southern strand) of the Wastach fault.
Read more
2009-07-21
Toolik Thermokarst Alaska's North Slope area is a wide expanse of land that is located north of the Brooks Range and extends to the Arctic Ocean. The land is characterized by the surface “active layer” of tundra that thaws during the summer season, while the underlying permafrost remains frozen year-round.
Read more
2009-07
GNET 2009 Nine continuous GPS stations were installed in Greenland during the August 2009 field campaign. Communications for two stations installed last year (2008) were repaired and brought back online. Data from these sites are transmitted via an Iridium modem to the Boulder Facility network, where it is archived automatically. Currently there are 43 stations in the GNET network.
Read more
2009-07
New Permanent Station Installation on Mount Evans, Colorado Working with PIs from the National Oceanographic and Atmospheric Administration (NOAA) UNAVCO engineers installed a continuously operating GPS station at the Mt. Evans Observatory. The Observatory is operated by researchers from the University of Denver who are currently conducting weather experiments.
Read more
2009-07
Barrow DGPS Training and Inventory, Alaska UNAVCO paid a visit to the Barrow Arctic Science Consortium (BASC) facility in June of 2009 to perform maintenance and review a detailed inventory of the GPS equipment on loan to BASC. This annual visit also provided an opportunity to train researchers from UTEP and San Diego State University in the use UNAVCO gear at the facility.
Read more
2009-06
PBO Brochure Release PBO Brochure Release The Plate Boundary Observatory (PBO) is part of the larger National Science Foundation (NSF)-funded EarthScope project. This geodetic observatory is designed to study the four-dimensional strain field resulting from deformation across the active boundary zone between the Pacific and North American plates in the western United States and Alaska. The network will provide an unprecedented spatial and temporal view of western North America enabling Earth scientists and the natural hazards community to better understand earthquake and volcano behavior.
Read more
2009-05-04
Laser Strainmeter at Durmid Hill Records Bombay Beach Earthquake Swarm Laser Strainmeter at Durmid Hill Records Bombay Beach Earthquake Swarm The M4.8, March 24, 2009, Bombay Beach Earthquake and the earthquake swarm that followed it were recorded by the PBO Long Baseline Laser Strainmeter at Durmid Hill (DHL).
Read more
2009-04-14
LARISSA 2009, Antarctica LARISSA: Larsen Ice Shelf System, Antarctica is a National Science Foundation funded initiative that brings an international, interdisciplinary team together to address a significant regional problem with global change implications, the abrupt environmental change in Antarctica's Larsen Ice Shelf System.
Read more
2009-04
UNAVCO Polar Support Offers Scientists a New Look at Glaciology New advances in understanding the dynamics of ice sheets in the most remote polar regions of the world have been made possible by technological advances in GPS systems. Eight new GPS stations, designed and built by UNAVCO as a result of the 3 year NSF funded Major Research Instrumentation (MRI) Project Collaborative Research.
Read more
2009-03
Munson Farms Surface Soil Moisture Study Two continuously operating GPS stations were recently installed at Munson Farms outside of Boulder, Colorado. The stations will operate for three years and are part of a larger, continental-scale study that aims to convert GPS signal-to-noise (SNR) data into estimates of surface soil moisture content.
Read more
2009-03
EarthScope PBO Instruments Aid in Monitoring Recent Yellowstone Earthquake Swarm EarthScope PBO Instruments Aid in Monitoring Recent Yellowstone Earthquake Swarm EarthScope seismic, strain and GPS data are currently aiding scientists in interpreting the ongoing earthquake swarm under Yellowstone National Park that began on December 27, 2008 and ended in early January, 2009. Scientists are carefully studying the seismic and GPS data to evaluate the cause of this swarm that appears to have been related to hydrothermal and tectonic processes.
Read more
2009-02-17
GNSS Reference Station Communications Upgrade The GNSS reference frame station, CHPI, in Cachoeira Paulista, Brazil, is operated by the Instituto Nacional de Pesquisas Espaciais (INPE) in conjunction with the Jet Propulsion Laboratory (JPL) and UNAVCO.
Read more
2009-02
Polar Permanent Stations MRI Project: Year 3 Field Season In 2006 the National Science Foundation awarded Major Research Infrastructure (MRI) funding to UNAVCO and the IRIS/PASSCAL seismic consortium for a unique proposal to design and build a reliable power and communication system for autonomous polar station operation. This three-year development effort involves close collaboration with Antarctic seismologists and GPS scientists.
Read more
2009-02
Antarctic Program Support 2008-2009 During the 2008-09 Antarctic field season, the UNAVCO polar group supported 24 individual PI-based science campaign projects. Sixty two receivers were sent to the continent for campaign support, including fifteen NetRS receivers. An additional ten GPS receivers remain on the ice to support long term data collection at WAIS divide under Slawek Tulaczyc.
Read more
2009-02
UNAVCO Strategic Plan 2009-2013 UNAVCO has just unveiled its new Strategic Plan, a document that will guide the organization's activities over the next five years. After a one year planning and revision process led by UNAVCO President M. Meghan Miller, a full color version of the plan that includes many new community graphics was distributed at the American Geophysical Union's Fall Meeting in San Francisco December, 2008.
Read more
2009-01
POLENET 2008-2009 During 2008-09 field season one CGPS site was installed by plane from McMurdo and two sites were installed at or near the WAIS divide camp. Five sites installed last season were visited by plane and helicopter to perform O&M. Data from the 14 operational CGPS sites are transmitted via the Iridium satellite system to the UNAVCO Archive.
Read more
2009-01
New Permanent Station Installations on Sierra Negra Volcano, Galapagos In January of 2009 UNAVCO Engineer Abe Morrison along with Principal Investigator (PI) Bill Chadwick from the National Oceanic and Atmospheric Administration, installed 2 additional Permanent GPS stations in an existing network inside of Volcano Sierra Negra. One of the new stations went inside the caldera and one on the rim.
Read more
2009-01
Paleoseismology, the Echo Cliffs Precariously Balanced Rock Hudnut et al. (2009) used TLS to investigate a previously undocumented Precariously Balanced Rock (PBR) located above Echo Cliffs in the western Santa Monica Mountains. The rock lies above the ramp in the fault propagation fold structure that has been interpreted by Davis and Namson as an active structure that may pose a major seismic hazard to the Los Angeles area.
Read more
2009-12
Monitoring gully-head propagation with TLS Arid and semi-arid landscapes are often laced with rapidly evolving networks of ephemeral gullies. These gully networks can act as significant sources of fine sediment, and their growth can undermine road systems, agricultural works, and other forms of infrastructure.
Read more
2009-12
PBO Transitions to Operations and Maintenance Phase PBO Transitions to Operations and Maintenance Phase The Plate Boundary Observatory (PBO) has transitioned from facility construction to operations and maintenance as of October 1, 2008.
Read more
2008-10-14
Modeling Creep in Parkfield Modeling Creep in Parkfield On August 17, 2008, a creep event was recorded along the Parkfield segment of the San Andreas Fault. PBO strainmeter B073 recorded a 50 nanostrain shear strain transient over 30 minutes while a USGS creepmeter in the area, xva1, recorded 1.5 mm of right lateral slip.
Read more
2008-10-07
PBO Nucleus Project Nears Completion PBO Nucleus Project Nears Completion The PBO Nucleus Project, which will update and incorporate 209 existing GPS stations into the PBO network, is within a month of completion.
Read more
2008-09-12
Unimak Island Installations Completed Unimak Island Installations Completed On August 24, 2008 PBO construction crews completed the installation of 14 GPS, 8 tiltmeters, and one webcam on Unimak Island, the remote easternmost island of the Aleutian chain in Alaska.
Read more
2008-09-12
Parkfield Creep Event Recorded by PBO Strainmeter Parkfield Creep Event Recorded by PBO Strainmeter On August 17, 2008, the strainmeter at Varian, B073, recorded such a creep event. It lasted an 1 hour and generated about 20 nanostrain of shear strain.
Read more
2008-09-08
Southern Californian Earthquake Well-Recorded by PBO GPS and Strainmeters Southern Californian Earthquake Well-Recorded by PBO GPS and Strainmeters A Mw 5.4 earthquake shook southern California on July 29, 2008, just before noon. It was located 4 km southwest of Chino Hills, CA, 46 km ESE from Los Angeles, and occurred at a depth of 14.7 km. This location puts it within 50 km of over 40 PBO GPS monuments, as well as a cluster of seven borehole strainmeters about 90 km to the southeast. High rate data (sampled every second) is available from both the GPS monuments and borehole strainmeters on the PBO web page.
Read more
2008-08-12
Unimak Island Installations Unimak Island Installations The second phase of a three-phased project for installing thirteen PBO GPS sites on Unimak Island, the largest and easternmost island in the Aleutian Island chain of Alaska, is underway. The first phase (July 12-31) involved preparation work for installing the sites, based out of Cold Bay. During the second phase (July 25-August 15), the crews will be installing seven of the western sites based off of a boat, the Kittiwake. The final phase of the project (August 12-31) will be based out of False Pass, when the crews will install the remaining stations.
Read more
2008-08-12
Short Course Series Highlighted PBO Data: LiDAR, Strainmeter, and InSAR Short Course Series Highlighted PBO Data: LiDAR, Strainmeter, and InSAR UNAVCO recently offered a series of well-attended short courses on processing and using various PBO data, including LiDAR, strainmeter and tiltmeter, and InSAR.
Read more
2008-07-12
PBO Successfully Installs Strainmeters in Yellowstone National Park PBO Successfully Installs Strainmeters in Yellowstone National Park PBO is installing six borehole strainmeters in Yellowstone National Park to aid in understanding ongoing volcanic processes. Two strainmeters were installed in the fall of 2007, another instrument was installed in early July, and three more are being installed in July and August of 2008.
Read more
2008-07-11
EarthScope Airborne LiDAR Imagery Acquisitions and Short Course EarthScope Airborne LiDAR Imagery Acquisitions and Short Course Two GeoEarthScope airborne LiDAR imagery acquisition campaigns were successfully completed in April 2008
Read more
2008-05-21
EarthScope Airborne LiDAR Imagery Acquisitions and Short Course EarthScope Airborne LiDAR Imagery Acquisitions and Short Course Two GeoEarthScope airborne LiDAR imagery acquisition campaigns were successfully completed in April 2008
Read more
2008-05-21
GPS Installation in the Eastern United States GPS Installation in the Eastern United States In late April 2008, a crew of three field engineers from the Basin and Range and Rocky Mountain regions of PBO conducted a 6000 mile road trip from Salt lake City, UT through the southeastern US and back, and completed the installation of three permanent GPS stations in Arkansas, Tennessee, and North Carolina. P777 in Arkansas and P778 in Tennessee were installed on privately held land with abundant rock of good quality but heavy tree cover, which made finding suitable locations challenging. In North Carolina, P779 was installed at the Pisgah Astronomical Research Institute (PARI), a non-profit research organization that houses both optical and radio telescopes, in addition to other earth science instrumentation. The internet connection for data communications at P779 was accomplished via a pair of optical fibers, making it the only station in PBO serviced by fiber optics directly to the equipment enclosure.
Read more
2008-05-21
2008 Cascadia Episodic Tremor and Slip Event 2008 Cascadia Episodic Tremor and Slip Event Fifteen hours of tremor per day for three days plus significant GPS displacements in north-west Washington suggests that the 2008 Cascadia Episodic Tremor and Slip (ETS) event is underway.
Read more
2008-05-14
2005-2006 Mt. Augustine Eruption Studied with High-Rate GPS Data 2005-2006 Mt. Augustine Eruption Studied with High-Rate GPS Data High-rate GPS data from the UNAVCO Plate Boundary Observatory (PBO) network, installed in collaboration with the Alaska Volcano Observatory, were analyzed by a group of geophysicists and volcanologists under the lead of Mario Mattia (Istituto Nazionale di Geofisica e Vulcanologia, Catania, Italy) in order to study in detail the deformation and unrest preceding a major eruption of Mt. Augustine volcano (Mattia et al., 2008).
Read more
2008-04-18
PBO Talk at San Diego State University PBO Talk at San Diego State University On February 21, 2008 PBOs Siting Outreach Specialist Jayme Margolin gave a talk at the SDSU Brawley Campus entiled EarthScope: Revealing the Earths Secrets.
Read more
2008-03-11
PBO Instruments Record Wells NV, Event PBO Instruments Record Wells NV, Event On Thursday, February 21, 2008, an earthquake occurred in north-central Nevada 10 km ENE of Wells, Nevada, near interstate 80.
Read more
2008-03-10
EarthScope Strainmeter Deployments in Canada Complete EarthScope Strainmeter Deployments in Canada Complete December marked the completion of seven borehole strainmeter installations in Canada. The installations were part of the overall PBO EarthScope effort, but focus on regularly occurring Episodic Tremor and Slip (ETS) events best observed in a region from southern Puget Sound to central Vancouver Island.
Read more
2008-01-15
UNAVCO Events at the AGU Fall Meeting 2008 Join the UNAVCO Community in San Francisco, CA at the American Geophysical Union (AGU) Fall Meeting in December, 2008. New this year, UNAVCO will offer presentations at the UNAVCO Booth in the Exhibition Hall at the Moscone Center. A list of presentations and times can be found below. The booth presentations are informal and will allow time for Q&A.
Read more
2008-12
New Game Incorporates EarthScope Science: Volcano Island The Harvard-Smithsonian Center for Astrophysics (HSCA) has developed an interactive game, Volcano Island, aimed at middle school students to teach about EarthScope-related science. In the game, the user is the mayor of a town on the fictional Volcano Island, home to the rumbling Mt. Leakytop Volcano.
Read more
2008-12
UNAVCO Holds Bilingual Educator Workshop in Puerto Rico: Many UNAVCO Educational Materials now Available in Spanish UNAVCO, in collaboration with the Puerto Rico NASA Space Grant Program and the University of Puerto Rico in Mayagüez, held an educator's workshop entitled “Introducing GPS and its Applications in Earth Science to Educators of Puerto Rico” on September 27, 2008 in Mayagüez, Puerto Rico.
Read more
2008-09
RESESS Intern Publishes in Nature Geoscience Stephen Hernández, a UNAVCO RESESS (Research Experience in Solid Earth Science for Students) intern since 2005, is second author on a widely noted paper published in Nature Geoscience's May 2008 issue. The paper, Global ubiquity of dynamic earthquake triggering (Velasco et al.), explores the theory of earthquake triggering, but as a global phenomenon.
Read more
2008-08
Boy Scouts of America use UNAVCO GPS Technology for Sustainability at the Philmont Scout Ranch, New Mexico The Philmont Scout Ranch, a place Boy Scouts go to embark on backpacking expeditions into the high country of the New Mexican Rockies, employs a conservation staff to ensure the integrity of the pristine wilderness.
Read more
2008-07
UNAVCO's Short Course Series Covered LiDAR, Strainmeter, InSAR, and GPS Data UNAVCO offered a series of well-attended short courses on how to work with our various datasets over the summer, including LiDAR, strainmeter and tiltmeter, and InSAR. These courses were aimed at current researchers who want to update their skills or branch into new areas of research, and younger scientists such as postdoctoral fellows, graduate students, and upper level undergraduates interested in an introduction to a new research tool.
Read more
2008-06
UNAVCO Education and Outreach Supports the TXESS Revolution UNAVCO gave a teacher workshop on using Global Positioning System (GPS) data in the classroom in April 2008 as part of the TeXas Earth and Space Science Revolution (TXESS Revolution) teacher professional development program, which is being led by PI Kathy Ellins of the University of Texas, Austin.
Read more
2008-04
Gap Year in Alaska Leads Fort Lewis College Student to Geology Major [External article] Ally spent her gap year interning as a field assistant with a scientific organization and working in her father's stone masonry business. She graduated from Nederland High School in Colorado in 2006, a year early. She is a freshman at Fort Lewis College in Durango, CO, majoring in Geology.
Read article »
2008-01
The Great Southern California ShakeOut UNAVCO participated in the Great Southern California ShakeOut on November 13, 2008. We responded to the simulated magnitude 7.8 ShakeOut event as if it were a real earthquake, providing us with an opportunity to test our response procedures for a similar event in the western United States.
Read more
2008-11
Terrestrial Laser Scanning Study of Gully Erosion at West Bijou Creek Escarpment, Arapahoe County, Colorado: An Investigation on Field Acquisition and Data Processing Terrestrial laser scanning (TLS) or ground based LiDAR (light detection and ranging) is a relatively new technology that digitally maps geological outcrops at mm to cm resolution. We report here the results of a trial TLS project that had two main aims: collecting scans for monitoring gully erosion and conducting a survey to connect field methods of TLS with geomorphology.
Read more
2008-08
GPS and InSAR Study of the 2005 Eruption of Sierra Negra Volcano, Galápagos, Ecuador A team of scientists investigated the 2005 eruption of Sierra Negra volcano in the Galápagos Archipelago using GPS and InSAR data as well as petrologic and geochemical analyses.
Read more
2008-04
Plate Tectonics in the East African Rift D. Sarah Stamps, a first-year graduate student at Purdue University, is the lead-author on a paper presenting "A kinematic model for the East African Rift" published recently in 'Geophysical Research Letters' (Stamps et al., 2008) and highlighted by the American Geophysical Union.
Read more
2008-04
2008 UNAVCO Science Workshop a Success! The 2008 UNAVCO Science Workshop, held in Boulder, CO at the Millennium Harvest Hotel from March 11-13, was well attended, drawing 190 attendees from as far away as New Zealand and Italy, including 20 UNAVCO-supported students, three of which are RESESS interns, and 50 UNAVCO employees. The workshop was a mix of Science Session talks related to UNAVCO-supported science, breakout Special Interest Groups (SIGs), poster sessions, and field trips.
Read more
2008-03
UNAVCO Community Scientist Andria Bilich Receives 2007 Bradford Parkinson Award [PDF] The Institute of Navigation (http://www.ion.org/) presented its Bradford Parkinson Award for the year 2007 to Dr Andria Bilich of the National Geodetic Survey. This award is given annually to honor an outstanding graduate student in the field of Global Navigation Satellite Systems.
Download PDF »
2008-02
Data Archive Interface Version 2 (DAIv2) - Public Alpha Release The Data Archive Interface Version 2 (DAIv2) is the UNAVCO Facility's next generation interface for search and access of UNAVCO's GPS data holdings. The DAIv2 includes a powerful and flexible Web application (see figure 1) for discovery and visualization of UNAVCO's GPS data and metadata holdings. The DAIv2 also includes a suite of Java-based command-line clients for advanced users needing automated discovery and download.
Read more »
2008-11
East Greenland Glacier Dynamics Outlet glaciers on the perimeter of the Greenland Ice Sheet continuously feed fresh water into the Atlantic Ocean at the zone where the cryosphere, hydrosphere, and atmosphere meet, a highly complex and insufficiently understood area.
Read more »
2008-08
GGN-FALK Station Install NASA-JPL provides support for the GPS infrastructure through a network of permanent GPS stations called the Global GPS Network (GGN). The UNAVCO Facility supports the operation and maintenance of the permenent stations that make up the NASA-GGN.
Read more »
2008-06-29
Puerto Rico Seismic Network Installations In May of 2008 UNAVCO Engineers Abe Morrison and Sarah Doelger installed three of the six new CGPS stations to be placed around Puerto Rico and the US Virgin Islands. These installations included a site at the Arecibo Observatory, the Bayamon Science Park, and one on Caja De Muertos Island.
Read more »
2008-05
Antarctic Program Support 2007-2008 During the 2007-08 Antarctic field season, the UNAVCO polar group supported 19 individual PI-based science campaign projects. Seventy receivers were sent to the continent for campaign support, including twenty NetRS receivers.
Read more »
2008-02
Magnitude 6.0 Earthquake hits Nevada On Thursday, February 21, 2008, at 06:16:02 AM local time, an earthquake occurred in north-central Nevada. The epicenter was 10 km ENE of Wells, Nevada, near interstate 80. The depth of the rupture was determined at 6.7 km. Numerous buildings in Wells suffered considerable damage.
Read more »
2008-02
Lasers in the Cold Desert UNAVCO's recently purchased Terrestrial Laser Scanner (TLS), will be used for a number of investigations in Antarctica. Currently, scientist Bruce Marsh, the Principal Investigator of Johns Hopkins University, and Bjorn Johns, a UNAVCO Project Manager, are scanning a beautifully exposed magmatic mush column (MMC) in the Dry Valleys of Southern Victoria Land.
Read more »
2008-01
Puerto Rico Seismic Network Installations (Part 2) UNAVCO Engineers Sarah Doelger and Ellie Boyce recently completed the last three of six new CGPS stations located on several islands in the Caribbean. All six stations will be incorporated into the Puerto Rico Seismic Network (PRSN) which is a division of the University of Puerto Rico, Mayaguez.
Read more »
2008-10
GNET 2008 Nine continuous GPS stations were installed in Greenland as part of POLENET Greenland (GNET) during the May and July 2008 field campaigns. Communications for two stations installed last year (2007) were repaired and brought back online.
Read more »
2008-07
CALIPSO Facility Support 2007-2010 The UNAVCO facility provided support for the CALIPSO Borehole Facility (Caribbean Andesitic Lava Island Precision Seismo-geodetic Observatory) located on Montserrat, WI. The CALIPSO project investigates the dynamics of the entire magmatic system of Soufriere Hills Volcano (SHV) to enhance our understanding of andesitic magma dynamics in general.
Read more »
2008-06
Summit Camp Site Visit and Training With funding obtained from the NSF Office of Polar Progams, a permanent GPS base station was installed at Summit Camp in 2006 and is equipped with real-time kinematic (RTK) surveying capability. Summit Camp is a research station located at the highest point of the Greenland ice sheet, and supports a variety of multinational research, including atmospheric and snow chemistry studies, and deep ice core drilling operations.
Read more »
2008-05
Barrow DGPS Training and Inventory In early April of this year, UNAVCO visited the Barrow Arctic Science Consortium (BASC) in order to conduct the annual inventory of the GPS equipment on loan to BASC, and to train both BASC science support staff members and University of Alaska Fairbanks researchers.
Read more »
2008-04
POLENET Support 2007-2008 Twelve continuous GPS and eight seismic stations were installed in Antarctica during 2007-08 field season. The POLENET Support project is part of the International Polar Year (IPY) POLENET consortium and includes active participation of collaborators from 28 nations including the US. The project's GPS goals are to measure the vertical and horizontal solid Earth deformation to improve and test the models of glacial isostatic adjustment/sea-level change and to improve the global geodetic reference frame.
Read more »
2008-02
Magnitude 6.9 Vanuatu Earthquake: Near one of UNAVCO's First Permanent Station Installations The USGS reported a magnitude 6.9 thrust fault earthquake occurring on Tuesday, September 9, 2008 at 5:52 am local time at a depth of 121.8 km. Moderate to strong shaking was reported from the Banks and Torres islands near the epicenter, and from Luganville on Espiritu Santo 225 km to the south, which is Vanuatu's largest island.
Read more »
2007-09
Benin's Millennium Challenge Account The small West African nation of Benin is a poor country currently confronted with a struggling economy and widespread poverty. Economic development is hindered by land insecurity, lack of access to capital, an inefficient judicial system, and an uncompetitive sea port.
Read more »
2008-07
Terrestrial Laser Scanning in Iceland: CAUSE The Center for Advanced Undergraduate Studies and Experience (CAUSE) at Pennsylvania State University is offering a 2-semester course examining the geology, geophysics, and geography of Iceland. UNAVCO's newly acquired Terrestrial Laser Scanner (TLS) was loaned to Professors Sridhar Anandakrishnan and Pete La Femina, and their 14 undergraduate students, for the field portion of the course, which took place over a 2-week interval in May.
Read more »
2008-05
Polar Permanent Stations MRI Project: Year 2 Field Season In 2006 the National Science Foundation awarded Major Research Infrastructure (MRI) funding to UNAVCO and the IRIS/PASSCAL seismic consortium for a unique proposal to design and build a reliable power and communication system for autonomous polar station operation. This three-year development effort involves close collaboration with Antarctic seismologists and GPS scientists.
Read more »
2008-02
Marshall Testing Facility Operational - Marshall, Colorado The UNAVCO Facility has completed construction of a testing facility located at Marshall, just outside Boulder, Colorado. The testing facility is funded by NASA-GGN through the UNAVCO cooperative agreement. NASA's Global GPS Network (GGN) faces many challenges in the near future primarily due to maintenance of aging equipment.
Read more »
2008-01
GeoEarthScope LiDAR Data Release in Northern California GeoEarthScope LiDAR Data Release in Northern California The first processed products from the GeoEarthScope Northern California Airborne LiDAR project were released to the community in December, 2007. Additional products from this vast dataset will be released in the coming months, along with more advanced access and analysis tools, as processing efforts continue. The data are currently available as 1 km^2 tiles of 0.5 m digital elevation models - both unfiltered (all data) and filtered (bare earth) - in ESRI (ArcGIS) binary grid format.
Read more
2007-12-12
Sunrise Tree Farm Presentation in Philomath, Oregon a Success Sunrise Tree Farm Presentation in Philomath, Oregon a Success Educational and Outreach (E&O) activities began at PBO sites that have requested E&O involvement. At Sunrise Tree Farm in Philomath, Oregon, several school programs and community presentations were shared. This is a busy time of year for a site with a deep brace GPS monument (P375) that is eager for new educational materials and programs. Two different school groups with about 60 students ranging in age from seven years old to seventeen learned about the theory of plate tectonics, Oregon’s regional landforms and tectonic activity, and then the use of GPS. About 35 teachers, parents, staff members, and the general public also listened to the presentations covering the PBO mission, components of the GPS monument, and more. From their questions and enthusiasm, this site visit proved to be a success.
Read more
2007-12-12
Two Borehole Strainmeter/Sesimometer Stations Installed in Yellowstone Two Borehole Strainmeter/Sesimometer Stations Installed in Yellowstone Plate Boundary Observatory crews installed borehole strainmeters and seismometers at B207 (Madison Junction) and B028 (Lake Junction) in Yellowstone National Park. The installations were a joint effort between EarthScope the National Park Service, USGS, and the University of Utah. We were greatly assisted in the field by National Park Service Employees Hank Heasler (borehole geophysics and geology) and Cheryl Jaworowski (cuttings geology and installation zone selection). Four additional boreholes are planned for installation in the Spring and Summer of 2008.
Read more
2007-11-14
PBO Northern California Reaches 200-Station Milestone PBO Northern California Reaches 200-Station Milestone The PBO installation crews constructed GPS station number 200 in Northern California in October. On October 24, GPS station P660 was completed near Mt Shasta, CA. A deep-drilled monument was constructed at this site, utilizing radio data communications, a three-panel solar system, and an upgraded security system. PBO Northern California finished the month with 201 GPS installations, well ahead of the scheduled mark of 192 installations. This will put the region in good shape to finish the project next year on-schedule.
Read more
2007-11-13
Installation Crews Reach Key Milestones Installation Crews Reach Key Milestones As of the end of September 2007, the Plate Boundary Observatory installed 708 GPS stations, 44 borehole strainmeters, and three long-baseline laser strainmeters. PBO has now produced 470.5 GB of raw data (single copy, not counting seismic data) in 877,231 data files. PBO has now produced 218.3 GB of seismic data (single copy, miniSEED format). PBO has also now produced a total of 688.8 GB of raw data. All PBO data are publicly available at EarthScope funded data centers. PBO has collected approximately 95.8% of the data that could possibly have been collected over the PBO lifespan. Data not recorded were due to the NetRS failures in 2005 and power failures at the Anza borehole strainmeters in the summer of 2006. No data have been lost to date once they have entered the PBO Data Management System.
Read more
2007-10-11
Airborne LiDAR Imagery of Active Faults for GeoEarthScope Airborne LiDAR Imagery of Active Faults for GeoEarthScope GeoEarthScope is a component of EarthScope that includes the acquisition of aerial and satellite imagery and geochronology. As part of GeoEarthScope, we are working on collecting LiDAR (Light Detection And Ranging) data along major fault zones in the western U.S. and Alaska over the next year. This effort will provide extensive and detailed images of active faults throughout the tectonic plate boundary region on the west coast of North America. Airborne LiDAR is an unparalleled remote sensing technique for generating extremely detailed maps of ground elevation. Because of LiDAR's advantages over previous remote sensing techniques, it is rapidly becoming a key tool in studies of active faulting, landscape processes, and ground deformation.
Read more
2007-10-10
Borehole Strainmeter and GPS Permitting Borehole Strainmeter and GPS Permitting During the month of August, PBO Permitting made excellent progress on Borehole Strainmeter and GPS permitting. We received 14 new BSM permits including permits for five sites in Yellowstone National Park. In addition, we are making excellent progress on the Mendocino, Mojave, LA Basin, and East Bay Parks (San Francisco) strainmeter permits. These remaining clusters will include several alternate sites for each primary site so that there will be no interruption in drilling if a bad hole is encountered.
Read more
2007-09-11
GeoEarthScope Northern California LiDAR Project: Preliminary Images Emerge GeoEarthScope Northern California LiDAR Project: Preliminary Images Emerge Data collection for the GeoEarthScope Northern California LiDAR project concluded in April 2007. Over the course of several weeks, approximately 1400 square kilometers of EarthScope targets were imaged as well as supplementary targets for the USGS and the California PUC. Between this project and the previously conducted B4 project, also funded by NSF, the entire San Andreas fault system, along with many other important adjacent faults and structures, have now been imaged with high resolution airborne LiDAR.
Read more
2007-09-11
Akutan Tilt Installation Akutan Tilt Installation During August of 2007, the Plate Boundary Observatory (PBO) successfully installed four Lily Self Leveling Borehole Tiltmeters on Akutan Volcano, in the central Aleutian Islands of Alaska. All four instruments were collocated with existing PBO Global Positioning Systems (GPS) stations installed on the volcano in 2005. The tiltmeters will aid researchers in detecting and measuring flank deformation associated with future magmatic intrusions of the volcano. All four of the tiltmeters were installed by PBO field crews with helicopter support provided by JL Aviation and logistical support from the Trident Seafood Corporation, the City of Akutan, and the Akutan Corporation. Lack of roads and drivable trails on the remote volcanic island required that all drilling equipment be transported to each site from the village of Akutan by slinging gear beneath the helicopter and with internal loads. Despite poor weather conditions during the installation, all four tiltmeters were installed in 9 days on the volcano in addition to completing maintenance on the existing GPS stations elsewhere on the volcano.
Read more
2007-09-11
Construction of the Final Pair of PBO Longbase (Laser) Strainmeters Construction of the Final Pair of PBO Longbase (Laser) Strainmeters Construction of the final pair of PBO long baseline (laser) strainmeters, near Cholame, California, is making impressive progress. These 400-meter long instruments are being sited over a region of recently discovered seismic tremor activity. The instruments will also detect strain changes in the Parkfield area to the north, and on the locked section of the San Andreas Fault nearby, which last ruptured 150 years ago.
Read more
2007-08-16
Installation of Mt. St Helens Borehole Strainmeters and Seismometers Nearly Complete Installation of Mt. St Helens Borehole Strainmeters and Seismometers Nearly Complete In July and early August EarthScope Plate Boundary Observatory field crews installed 3 borehole strainmeter stations surrounding Mt. St Helens. Crews installed stations at station B202 (Windy Ridge), B203 (Quarry), and B204 (Marble Mountain). Each installation consists of a borehole strainmeter installed at ~800 ft deep, a 3 component seismometer located just above the strainmeter, and a tiltmeter will be installed ~ 100 ft below the surface. The final station in the cluster, B201, is nearing completion and will be installed in the early fall.
Read more
2007-08-16
PBO Begins 2007 Summer Student Program PBO Begins 2007 Summer Student Program As of May 31, nine students were hired for the 2007 PBO Summer Student Program. From June to September, these students will be working with PBO installation crews in all of the PBO regions. The program is intended to get young people interested in the geosciences by developing technical and professional skills while learning about the science and construction of EarthScope. Many of the students are on their second season in the program, which significantly adds to the productivity and efficiency of the installation crews.
Read more
2007-07-13
Eastern US PBO Site Reconnaissance Eastern US PBO Site Reconnaissance PBO will install 5 additional stations in the Eastern United States, to complement the eleven existing GPS stations collocated at USArray sites.
Read more
2007-06-28
San Juan Grade Install Update San Juan Grade Install Update On 12pm, May 17, 2007 PST the San Juan Grade borehole strainmeter, part of the San Juan Batista array, was installed. This installation, the 33rd of the project, was a milestone for the project. This installation included all new drilling methods and a critical replacement grout, both elements critical to the success of the project.
Read more
2007-06-26
UNAVCO Convenes Special Session on Borehole Networks UNAVCO Convenes Special Session on Borehole Networks Greg Anderson (PBO Data Products Manager) and David Mencin (PBO Strainmeter Operations Manager) convened a special session on Integrated Borehole Geodetic and Seismic Networks: A Developing Tool for Earth Science during the 2007 Annual Meeting of the Seismological Society of America.
Read more
2007-05-21
GeoEarthScope Northern California LiDAR GeoEarthScope Northern California LiDAR Data acquisition for the GeoEarthScope Northern California LiDAR project was completed successfully in April 2007. Over the course of several weeks approximately 1400 square kilometers of EarthScope targets were imaged, as well as supplementary targets for the USGS and the California PUC. Between this project and the previously conducted B4 project, also funded by NSF, the entire San Andreas fault system has now been imaged with high resolution airborne LiDAR, along with many other important faults and structures. This represents a major milestone for GeoEarthScope and a significant achievement for the entire EarthScope project and community.
Read more
2007-05-07
2007 EarthScope National Meeting 2007 EarthScope National Meeting Teachers from around the country participated in a four-hour workshop given at the EarthScope National Meeting. Teachers learned about EarthScope, explored the Earth Structure through a hands on activity (shown: Ricardo Flores from Antelope Valley High School), discussed fault creep by using the earthquake machine, and investigated episodic tremor and slip in the Pacific Northwest. There was also a hands-on activity using GPS data from the Plate Boundary Observatory.
Read more
2007-04-11
PBO Installs First of Four Permafrost GPS Stations in Alaska PBO Installs First of Four Permafrost GPS Stations in Alaska The PBO Alaska Regional Office installed the first of four Permafrost GPS monuments planned for Alaska in the city Kotzebue on March 7th 2007. Kotzebue is located on the northwest portion of the Baldwin Peninsula on Kotzebue Sound in Northwest Alaska. The permafrost monument is a new one of a kind monument that was designed by Duane Miller and Associates LLC for UNAVCO using a thermopile manufactured by Arctic Foundation, Inc. to build and maintain a stable GPS monument in Arctic areas with permafrost subject to seasonal freeze thaw cycles.
Read more
2007-03-30
New deep braced GPS monument installed in Pacific Northwest New deep braced GPS monument installed in Pacific Northwest A new deep braced GPS monument was completed on February 14th at the Newport Municipal Airport in western Oregon to replace the existing GPS monument (NEWP) that had been installed in June of 1996, by hand digging down to a meter, and then pounding rebar to approximately 1/2 meter. During a visit in May of 2006, it was found that the monument was deeply rusted. This location is an important site for monitoring activity related to the Cascadia Subduction zone. Both the old station (NEWP) and P367 have been running simultaneously since February 15th of this month.
Read more
2007-03-15
National Geographic Films Strainmeter Installation National Geographic Films Strainmeter Installation The installation of strainmeter B026 was filmed for a National Geographic special "Earth Shocks" during the week of March 26th. Wade Johnson, Tim Dittmann, Alan Stroeve, James Stair, Michael Gottlieb, Sarah Venator and Andy Tiedmann of PBO were present and Herb Dragert of the Pacific Geosciences Center and a member of the PBOSC was present as well. The special will be one hour long and aired on the National Geographic television channel. PBO instrumentation, especially strainmeters, will be displayed along with their role in identifying and understanding the episodic tremors in the PNW.
Read more
2007-03-14
2007 Cascadia Episodic Tremor and Slip 2007 Cascadia Episodic Tremor and Slip The Pacific Northwest Seismic Network reports that strong tremor began in the central-south Puget Sound Jan 13, 2007 and that it is migrating in a north-northwest direction. PBO has installed 13 borehole strainmeters and seismometers in the region.
Read more
2007-01-23
PBO/Earthscope Campaign Support PBO/Earthscope Campaign Support The Rio Grande Rift project continues to be the main focus of the PBO Campaign support group, with four more monuments having been installed in early December. The network will consist of 25 semi-permanent GPS stations in Colorado and New Mexico, of which 21 have now been completed. Project PI's Anne Sheehan and Steve Nerem of the University of Colorado, Tony Lowry of Utah State, and Mousumi Roy of the University of New Mexico will analyze data acquired by these stations over the next five years to determine velocity and tectonic style associated with the Rift.
Read more
2007-01-18
PBO at 2006 Fall AGU PBO at 2006 Fall AGU Numerous science, facility construction, and education and outreach papers were presented at the Fall AGU meeting. As we move into year four of the construction phase of the MREFC, it is highly encouraging to see the science community using and interpreting PBO data and data products to resolve key EarthScope science goals. PBO staff participated in numerous talks and posters outlining the state of the construction and data management activities, and more importantly to garner feedback from the science community on how to improve data and information access, education and outreach, and construction processes and procedure. The following are a summary of science, education and outreach, and facility construction abstracts.
Read more
2007-01-18
Improving Hurricane Intensity Forecasts Using Caribbean GPS Stations The COSMIC program has recently been funded by the National Science Foundation to expand Suominet into the Caribbean. The objective of this expansion is to improve the forecasts of hurricane track and intensity using continuous observations of integrated water vapor.
Read more
2007-12
GNET 2007 Twenty-three continuous GPS stations were installed in Greenland during August 2007. The GNET project is part of the International Polar Year (IPY) POLENET consortium and includes active participation of collaborators from Denmark, Luxemburg, and the USA for Greenland activities.
Read more
2007-07
Green Valley Biocomplexity Study Area UNAVCO provided field engineering support for a third consecutive year to gather GPS data at the Biocomplexity study sites maintained near Thule, Greenland by Ron Sletten (University of Washington) and Jeffrey Welker (University of Alaska, Anchorage).
Read more
2007-07
Improving Hurricane Intensity Forecasts Using Caribbean GPS Stations The COSMIC program has recently been funded by the National Science Foundation to expand Suominet into the Caribbean. The objective of this expansion is to improve the forecasts of hurricane track and intensity using continuous observations of integrated water vapor.
Read more
2007-05
Polar Permanent Stations MRI Project: Year 1 Field Season The National Science Foundation recently awarded Major Research Infrastructure (MRI) funding to UNAVCO and the IRIS/PASSCAL seismic consortium for a unique proposal to design and build a reliable power and communication system for autonomous polar station operation.
Read more
2007-02
Pietown Maintenance The Pie Town, New Mexico, (PIE1) GNSS station had been exhibiting tracking problems for the past year or so, with periods of acceptable performance interrupted by poor tracking. Several issues made the performance problems difficult to diagnose.
Read more
2007-01
Niwot Ridge LTER The Niwot Ridge Long Term Ecological Research (LTER) area, located approximately 35km west of Boulder, is one of 26 field sites devoted to ecosystem studies in the larger LTER Network. Numerous studies in the area are currently underway, and in September UNAVCO provided researchers at the University of Colorado-Boulder one GPS unit with which to conduct hydrological surveys of the area's wells.
Read more
2007-09
McCall Glacier RTK Survey 2007 Mass balance measurements, surface velocities, cross-section profiles and continuous topography of McCall Glacier were made using real-time kinematic (RTK) surveys. The mass balance profiles were first measured in the 1990s with an airborne laser survey.
Read more
2007-06
Peatlands Minnesota Ten years ago, University of Minnesota's Paul Glaser headed up a pilot study of peatland methane release using three CGPS stations. The study showed that methane was released in events occurring over several hours which deformed the bog surface by tens of centimeters.
Read more
2007-08
Barrow Arctic Science Consortium DGPS System Upgrade and Training The Barrow Arctic Science Consortium (BASC) is dedicated to supporting research and educational activities pertaining to Alaska's North Slope, and adjacent portions arctic environments. In April, UNAVCO paid its yearly visit to the station in order to address equipment issues and train members of the BASC support staff, who will in turn instruct visiting scientists on how to use the GPS equipment.
Read more
2007-04
Bangladesh GPS Network Installation Participants from Lamont-Doherty Earth Observatory, Dhaka University, and the UNAVCO Facility installed 12 continuous GPS stations across eastern Bangladesh in February, 2007. The project, aimed at understanding the deformation associated with the Burma Arc subduction system, includes deployment of the GPS systems for 4 years and a rotating network of seismometers.
Read more
2007-02
MWD CGPS Installation 2007 The Metropolitan Water District (MWD) of Southern California is a consortium of 26 cities and water districts that provide drinking water to nearly 18 million people in parts of Los Angeles, Orange, San Diego, Riverside, San Bernardino and Ventura counties.
Read more
2007-09
Juneau Icefield Research Program Since its inception in 1946, the Juneau Icefield Research Program (JIRP) has offered undergraduate and graduate students a unique research opportunity on the large system of temperate glaciers located north of Juneau, Alaska.
Read more
2007-08
Sierra Field Course For the second year in a row, UNAVCO provided Indiana University's “Volcanoes of the Eastern Sierra Nevada: Geology and Natural Heritage of the Long Valley Caldera” field course with a Trimble RTK system to introduce the students to scientific field measurements.
Read more
2007-05
Geodetic Monitoring of the 2005 Da'Ure rifting event, Afar A major seismo-magmatic event in the Afar region of Ethiopia in October of 2005 prompted installation of 10 continuous GPS stations around the rift in January of 2006 by scientists from Purdue University, Lamont-Doherty Observatory, and University of Rochester in the U.S., in collaboration with the Geophysical Observatory of the Addis Ababa University in Ethiopia and the University of Leeds in the U.K.
Read more
2007-03
Antarctic Program Support 2006-2007 During the 2006-07 Antarctica season, the UNAVCO polar group supported 27 individual PI-based science project campaigns. Sixty one receivers were sent to the continent for campaign support. Five receivers remain on the ice to support long term data collection.
Read more
2007-02
Cascadia Episodic Tremor and Slip Event Cascadia Episodic Tremor and Slip Event The next Cascadia Episodic Tremor and Slip Event is predicted to begin between late October 2006 and late January 2007 (95% confidence limits). A few bursts of tremor lasting three to four days have been reported by the Pacific Northwest Seismic Network and the Pacific Geoscience Centre since November 8, 2006 but the expected event, usually associated with 10 to 20 days of continuous tremor, has not happened yet. Strain anomalies have been noted beginning November 4, 2006 but these could well be caused by the record rainfall which occurred in the area at that time.
Read more
2006-11-14
BSM Parkfield Update BSM Parkfield Update During the period spanning October 10th through November 2nd, five BSM installations were completed by a single fully staffed installation team. These installations included down-hole instrumentation, up-hole electronics, and communications systems installed with data flowing to the EarthScope archive. Sites installed include, B073 Varian 1, B075 Flengte Flats, B076 Donna Lee, B078 Gold Hill and B079 Jack Canyon.
Read more
2006-11-14
Augustine Installation Update Augustine Installation Update AV18 was started and completed in one day (Sunday) just before Karl Feaux and Austin Baldwin arrived at the island on a float plane. On Monday the crews started and completed AV16, a site located on the west island across the lagoon from base camp. Meanwhile, two potential locations for GPS monuments were found during reconnaissance. Excellent weather and clear skies allowed crews to work continuously through both days.
Read more
2006-09-06
UNAVCO Returns to Augustine Volcano UNAVCO Returns to Augustine Volcano UNAVCO field crews have returned to Augustine Volcano to install five permanent EarthScope GPS stations. These stations will add to the data footprint from those installed by UNAVCO exactly two years ago in 2004.
Read more
2006-09-05
UNAVCO UNAVCO "Education Day" Inspires Students at Pathfinder Ranch Science and Outdoor Education School UNAVCO participated in an "Education Day" at the Pathfinder Ranch Science and Outdoor Education School in Mountain Center, California, on July 27, 2006. Pathfinder Ranch is hosting two of the eight EarthScope borehole strainmeters in the Anza region to study the area between the San Andreas Fault and the San Jacinto Fault.
Read more
2006-08-25
The Plate Boundary Observatory's 400th GPS Station The Plate Boundary Observatory's 400th GPS Station On July 21, 2006, the 400th permanent GPS station of the EarthScope Plate Boundary Observatory was installed. Near the midway point of completing 852 installs by September 30, 2008, this milestone reinforces the dedication and vigor of the community and staff involved in completing this 5-year construction phase.
Read more
2006-08-18
GeoEarthScope Working Group Meetings GeoEarthScope Working Group Meetings All three GeoEarthScope working groups (LiDAR, InSAR and Geochronology) have now met at UNAVCO. These working groups are charged with identifying and prioritizing potential targets for airborne and satellite imagery and geochronology acquisitions through GeoEarthScope. Each group will submit a report to UNAVCO by August 31, 2006. These group reports will be subsequently reviewed and an overall GeoEarthScope acquisition plan based upon the three reports will be presented at open forums during GSA in October and AGU in December.
Read more
2006-08-08
Borehole Strainmeter Installation in Anza Region Borehole Strainmeter Installation in Anza Region The Plate Boundary Observatory is installing a cluster of seven borehole strainmeter instruments in the Anza region in southern California. This area is of geophysical interest because of its position between two major faults: the San Andreas Fault and the San Jacinto Fault.
Read more
2006-07-21
100th Plate Boundary Observatory GPS Station Installation in Northern California 100th Plate Boundary Observatory GPS Station Installation in Northern California Congratulations to the UNAVCO Richmond, California office for completing the 100th Plate Boundary Observatory GPS station installation in Northern California on June 2, 2006. Short-drilled GPS station P183 was installed on Bodega Head, a spit off of Bodega Bay, California. Bodega Head is one of the few places north of San Francisco where a GPS station can be located on the west side of the San Andreas Fault. Several years ago Bodega Bay was considered as a location for a nuclear power plant. Fortunately, once they discovered the fault line underneath Bodega Bay they decided to look elsewhere.
Read more
2006-06-16
GeoEarthScope LiDAR Working Group Meeting GeoEarthScope LiDAR Working Group Meeting The GeoEarthScope LiDAR working group met at UNAVCO on May 24-25, 2006 to identify and prioritize targets for Airborne Laser Swath Mapping (ALSM) acquisition for GeoEarthScope, the geologic component of the NSF funded EarthScope project. The participants identified numerous data acquisition targets in the EarthScope footprint, and the working group's final report will be submitted to UNAVCO and NSF in mid June.
Read more
2006-06-05
UNAVCO Welcomes Eric Calais UNAVCO Welcomes Eric Calais UNAVCO welcomes Eric Calais as the new UNAVCO Chairman of the Board and PBO Representative on the EarthScope Facility Executive Committee (EFEC). Eric is an Associate Professor of Geophysics at Purdue University and has been closely involved with UNAVCO for several years.
Read more
2006-04-25
UNIVISION Interviews UNAVCO/PBO Field Crew UNIVISION Interviews UNAVCO/PBO Field Crew UNIVISION, a leading Spanish television network in the United States and Mexico contacted PBO to conduct interviews and gather footage for segments of a television show called Aquí y Ahora. Part of the segments covers what the scientific community is doing to better understand geodetic hazards (such as earthquakes) on the west coast and what is being done to better prepare for such emergencies.
Read more
2006-03-27
PBO Core/Log/Strain Workshop Held at UNAVCO PBO Core/Log/Strain Workshop Held at UNAVCO The installation of the first ten PBO borehole strainmeters (BSMs) represents a major accomplishment for the EarthScope community. These instruments provide high resolution geodetic data spanning the frequency band from seismic data to GPS data, giving scientists good insight into processes with durations of hours to weeks.
Read more
2006-02-18
Data Analysis of the 2005 Olympic Peninsula Semi-Continuous GPS Network Data Analysis of the 2005 Olympic Peninsula Semi-Continuous GPS Network The regular occurrence of episodic deformation transients in Cascadia provides an ideal opportunity to study processes occurring within subduction zones capable of producing great megathrust earthquakes. GPS provides a unique observation of these events, during which the lower part of the subduction interface releases strain without detectable seismic shaking.
Read more
2006-01-24
Teaching in Small Groups Gets Big Results for an Introductory Geology Class Professor Michael Hamburger of Indiana University recently finished leading his fourth G188 class through the Eastern Sierra Nevada in California.
Read more
2006-07
Roger Groom of Portland, Oregon is UNAVCO's 2006 Master Teacher UNAVCO is pleased to announce its out-of-state selection for the 2006 master teacher summer program, Roger Groom, from Mt. Tabor Middle School in Portland, OR. Groom has a Masters of Education from Portland State University and completed the Graduate Teacher Education Program at Portland State University.
Read more
2006-03
2006 UNAVCO Faculty-in-Residence Summer Program The UNAVCO Faculty-in-Residence summer program is a new initiative designed to involve a college/university faculty member in UNAVCO education and outreach endeavors. The successful candidate will be an energetic, active member of the UNAVCO community who teaches introductory/general education college geoscience courses. This individual will work at UNAVCO headquarters in Boulder, CO for one week in June 2006.
Read more
2006-06
Teacher Workshops to Teach Teachers to Teach About Technology and Tectonics On January 26-27, UNAVCO education specialist Becca Walker worked with middle and high school Earth science teachers at the IRIS Consortium's Yuma Union School District Earth science teacher professional development project. Held at Cibola High School in Yuma, AZ, the workshop was designed to improve and align Earth science instruction in grades 7 and 9/10 and included activities by IRIS, UNAVCO, Boston College, Purdue University, and SCEC.
Read more
2006-02
NSF Funds Joint Major Research Infrastructure Proposal between IRIS and UNAVCO The National Science Foundation recently awarded funding to IRIS and UNAVCO for a unique proposal to design and build a reliable power and communication system for autonomous polar station operation. This development effort will involve close collaboration with Antarctic seismologists and GPS scientists.
Read more
2006-07
A Successful Meeting: The 2006 UNAVCO Science Workshop UNAVCO held its Science Workshop March 14-16, 2006 at the Brown Palace Hotel in Denver, Colorado. 154 attendees converged on the Brown Palace for the 2 ½ day event. 18 of those attendees were UNAVCO members and another 18 were students receiving support from UNAVCO to attend the meeting.
Read more
2006-04
2006 Short Courses: GPS and Strainmeter Data UNAVCO is pleased to announce the 2006 Short Courses will commence in June with two programs: GPS and Strainmeter Data. Both courses will be held at UNAVCO headquarters in Boulder, Colorado with experts in the UNAVCO community leading the instruction.
Read more
2006-06
International Collaboration for GPS Research in Iceland Is Hot Continuous GPS made the national news in Iceland this month after the Icelandic Center for Research (RANNIS) awarded funding for a significant expansion of continuous GPS networks in Iceland. The project titled "High-rate continuous GPS observations in Iceland" represents an international collaborative effort to construct a spatially dense high-rate continuously operating GPS network across the island of Iceland.
Read more
2006-02
2006 Western Pacific Geophysics Meeting: 24-27 July 2006, Beijing China The Western Pacific Geophysics Meeting will be held in Beijing, China, July 24-27, 2006. It is sponsored by AGU and several other societies in the western Pacific region. This is an excellent opportunity for members interested in the research of the western Pacific region and all related aspects of geophysics.
Read more
2006-07
2006 UNAVCO Science Workshop The 2006 UNAVCO Science Workshop will be held at the Brown Palace Hotel, in Denver, Colorado. The 2 1/2 day workshop will include planned science sessions, poster presentations, breakout discussions, and informal meetings, along with a field trip to Red Rocks Park.
Read more
2006-03
GPS Measurement Corrections for Geophysicists: A Calibration Procedure for Pseudorange Data A Thermotron environmental test chamber was recently purchased providing the capability to test system components in a controlled environment at extreme temperatures (-70 deg C - 70 deg C).
Read more
2006-06
Harvest Oil Platform The two GPS stations (HARV and HAR2), on the Harvest Oil platform (Figure 2), which sits roughly 15 km off the coast of central California, were brought online December 15, 2006, after an extended communications outage.
Read more
2006-12
Rio Grande Rift Network Installation The Rio Grande Rift project continues to be the main focus of the PBO EarthScope Campaign support group, with four more monuments installed in early December. The network will consist of 25 semi-permanent GPS stations in Colorado and New Mexico, 21 of which have now been completed.
Read more
2006-07
ICYLANDS Measurement Campaigns in Thule, Greenland The ICYLANDS project, at the University of Washington, is aimed at quantifying the coupling of the carbon and water cycles and the interacting physical, chemical, and biological (PCB) processes that control carbon exchange between cold, dry terrestrial ecosystems and the atmosphere.
Read more
2006-07
McCall Glacier RTK Survey 2006 Mass balance measurements, surface velocities, cross-section profiles and continuous topography of McCall Glacier were made using real-time kinematic (RTK) surveys. The mass balance profiles were first measured in the 1990s with an airborne laser survey.
Read more
2006-06
Summit Camp Permanent RTK Station Installation, Greenland A permanent GPS base station was installed at Summit Camp with real-time kinematic (RTK) surveying capability. Summit Camp is a research station located at the highest point of the Greenland ice sheet, and supports a variety of multinational research, including atmospheric and snow chemistry studies, and deep ice core drilling operations.
Read more
2006-04
Socorro Survey Training A 17-person, 2.5-day course was taught by UNAVCO at the New Mexico Institute of Mining and Technology (New Mexico Tech) in Feb-March 2006. The class was a hands-on introduction to scientific surveying using UNAVCO GPS equipment, specifically, Topcon GB-1000 receivers.
Read more
2006-02
Nicoya Peninsula Recon, Costa Rica An initial deployment of a prototype network of at least four permanent GPS stations is to occur between mid-April through mid-May. In preparation, two reconnaissance trips were made. The first took place in June 2005 during which time the local collaborator was met and several potential site locations were visited.
Read more
2006-01
Calabria Long-term Campaign Installation Participants from the Lamont-Doherty Earth Observatory, Dalhousie University, Universita della Calabria, and the UNAVCO Facility installed nine continuous GPS sites on a transect across Calabria, Italy, in November 2006. Calabria, in the boot of Italy, lies over an active Benioff zone in a complex subduction system.
Read more
2006-11
Kilauea Volcano Site Upgrades, Hawaii 11 sites in the Stanford-HVO Kilauea GPS network were upgraded from Trimble 4000 receivers and Trimble groundplane antennas to Trimble NetRS receivers and Trimble Zephyr Geodetic antennas. Communications for each site were also upgraded.
Read more
2006-08
UNAVCO Facility Supports the AFREF Technical Workshop The UNAVCO Facility, in support of NASA GGN and IGS activities, participated in the AFREF Technical workshop at the University of Cape Town in South Africa on July 9-13, which was attended by approximately 40 delegates from national surveying and mapping agencies around Africa.
Read more
2006-09
Santorini, Greece Permanent Stations In collaboration with Stathis C. Stiros from Patras University and The Institute for the Study and Monitoring of the Santorini Volcano (I.S.M.O.SA.V.) three permanent GPS stations were installed along the Santorini Caldera on the islands of Thira and Thirasia.
Read more
2006-05
Nicoya Peninsula CGPS, Costa Rica The Nicoya Peninsula of Costa Rica offers a unique opportunity with the use of GPS technology to advance the understanding of subduction zone dynamics as it is situated above an active seismogenic zone. Most such zones are typically located offshore.
Read more
2006-04
Record Antarctic Season 2005-2006 A record Antarctic season was just completed, with 80 geodetic GPS receivers provided in support of 25 individual PI-based science project campaigns, with six left for long term data collection.
Read more
2006-02
BARGEN Expansion 2006 Three new GPS sites were added to the existing Basin and Range Geodetic Network (BARGEN) in north-central Nevada as a response to recent findings in data indicating the existence of coherent sub-continental scale transient deformation signals.
Read more
2006-11
Sierra Negra Volcano Monitoring Systems Upgrade, Galapagos, Ecuador Two new continuous dual-frequency GPS sites and a repeater were installed on Sierra Negra volcano, on the island of Isabela, Galapagos, Ecuador. These stations augment a continuous, telemetered network installed in 2002 (2002 Network Installation) of two dual-frequency sites and four single-frequency GPS sites.
Read more
2006-07
Barrow Arctic Science Consortium DGPS System Upgrade and Training UNAVCO coordinated an annual site visit to the Barrow Arctic Science Consortium (BASC) facility with the arrival of the research team from University of Texas, El Paso (UTEP), to both upgrade parts of the GPS system and train the UTEP team on the system.
Read more
2006-06
Richmond Real-Time Station Installation The new NASA-JPL high-rate real-time station RCM7 was installed at the CSTARS (Center for Southeastern Tropical Advanced Remote Sensing) facility, which is part of the Rosenstiel School of Marine and Atmospheric Science, located on the University of Miami Richmond campus in Southern Miami-Dade, Florida.
Read more
2006-04
Yucca Mountain Expansion Project The second round of installations was completed for the Yucca Mountain Expansion project for the California Institute of Technology and Harvard-Smithsonian. The project, funded by the U.S. Department of Energy, is part of the Yucca Mountain feasibility study.
Read more
2006-04
Joshua Tree Survey UNAVCO provided 12 GPS systems for a campaign in Joshua Tree National Park. A total of 13 monuments were surveyed, 12 within the park and one outside the park. The network was established in 2005 to better understand the details of the crustal strain rate field between the southernmost San Andreas fault zone (SAFZ) and the eastern California shear zone (ECSZ). Additional campaigns are planned for May and September this year.
Read more
2006-02
PBO Responds to Unrest at Augustine Volcano, Alaska PBO Responds to Unrest at Augustine Volcano, Alaska One of the key goals of the NSF-funded EarthScope Plate Boundary Observatory (PBO) project, capturing deformation related to magmatic processes along the Aleutian volcanic arc, is being met in dramatic fashion on Augustine Volcano, Alaska.
Read more
2005-12-20
PBO GPS Station Installed at the SAFOD Drill Site PBO GPS Station Installed at the SAFOD Drill Site PBO and SAFOD, two of three elements of the EarthScope Project, combined efforts to permit and install a deep-drill braced monument GPS station near the SAFOD borehole in Parkfield, CA. Data from this GPS station will compliment the data set from the SAFOD drill hole. Additionally, this station will measure post seismic deformation following the September 2004 seismic event in Parkfield, CA.
Read more
2005-11-12
2005 UNAVCO Intern Presents Multipath Research at Society for Advancement of Chicanos and Native Americans in Science Conference UNAVCO's Research Experience in Solid Earth Science for Students (RESESS) program launched in the summer of 2005 with intern Stephen Hernández. Stephen conducted research with mentor Dr. Kristine Larson of the University of Colorado and staff at UNAVCO on multipath sources at the Parkfield GPS array.
Read more
2005-11
Socorro Magma Uplift Two permanent GPS sites were installed by contingents from UNAVCO, Georgia Tech, New Mexico Tech, and the New Mexico Bureau of Mines and Geology in November 2005 north of Socorro, New Mexico.
Read more
2005-11
Successful Completion of Challenging Yellowstone National Park GPS Installation Successful Completion of Challenging Yellowstone National Park GPS Installation A GPS site located on the Promontory in Yellowstone National Park (P709) was successfully completed during the last week in September. The Promontory is a peninsula between the South and Southeast Arms of Yellowstone Lake. Because of the location and accessibility, this site has been thought from the beginning to be one of the most difficult YNP sites to permit and install.
Read more
2005-10-21
PBO Geodetic Data Products Now Available PBO Geodetic Data Products Now Available UNAVCO is pleased to announce a significant milestone for the NSF-funded EarthScope project and the larger geodetic community: processed geodetic data products are now available from the Plate Boundary Observatory. With this milestone, the community now has, for the first time, free and open access to a full suite of geodetic data products spanning the frequency spectrum from periods of seconds to years, and produced using fully documented, community vetted methods.
Read more
2005-10-13
Cayuga/IAGT SuomiNet GPS Station A deep drilled braced monument has been installed in Auburn, New York for the Institute for the Application of Geospatial Technology (IAGT); in association with Cayuga Community College. Cayuga/IAGT is a participant in the SuomiNet GPS project.
Read more
2005-10
Hybrid PBO Sites Shore-NW and Floequarry Will Offer a Comprehensive Look at the Plate Boundary of the Pacific Northwest at all Frequencies Hybrid PBO Sites Shore-NW and Floequarry Will Offer a Comprehensive Look at the Plate Boundary of the Pacific Northwest at all Frequencies The Plate Boundary Observatory has met another significant milestone in the MREFC phase. On September 12, 2005, PBO engineers Mike Hasting and Peter Gray completed the first co-located borehole strainmeter (BSM) and GPS site. The combination of these two instruments at one site will provide comprehensive coverage of deformation from 100ths of seconds to 10s of years by collocating seismometer, borehole strainmeter, pore pressure monitor, and precision GPS sensors at a single site.
Read more
2005-09-30
First EarthScope PBO Raw Strainmeter Data Available First EarthScope PBO Raw Strainmeter Data Available We, along with our partners at the University of California, San Diego (UCSD), the IRIS Data Management Center (IRIS DMC), and the Northern California Earthquake Data Center (NCEDC) at the University of California, Berkeley, are pleased to announce that the first raw strainmeter data from the EarthScope Plate Boundary Observatory are now available.
Read more
2005-09-16
PBO Borehole Strainmeters Ready for Canada Installations PBO Borehole Strainmeters Ready for Canada Installations Since early August, PBO strainmeter crews have been working on Vancouver Island to create a network of borehole strainmeters. As of this writing, four new boreholes have been drilled on the Island, three at the Pacific Geoscience Center (PGC) located in Sidney, and one at the Ucluelet Coastguard Station on the western side of the Island. Unlike the previous strainmeter installs, a challenge at these Canadian sites has been to contain and remove all liquid and solid matter, or "cuttings," extracted during the drilling operation. This process is required by the site permits so as not to contaminate the local bays with silt from the cuttings.
Read more
2005-09-11
RETREAT, Northern Italy Eight semi-continuous GPS sites were established in northern Italy in June 2005 as part of the ongoing RETREAT (Retreating-trench, Extension and Accretion Tectonics) project. Each site was equipped with a Trimble NetRS receiver and a Trimble Zephyr Geodetic antenna.
Read more
2005-09
Baltoro Glacier Surface Velocity Survey, Pakistan UNAVCO GPS receivers were used to repeatedly determine the location of a network of stakes both across and along the Baltoro Glacier, Pakistan. Measurements were made from the glacier terminus to K2 base camp over a horizontal distance of ~40 km.
Read more
2005-09
Yucca Mountain Expansion Project The first round of installations was completed for the Yucca Mountain Expansion project for the California Institute of Technology and Harvard-Smithsonian. The project, funded by the U.S. Department of Energy, is part of the Yucca Mountain feasibility study.
Read more
2005-09
GULFNET Rapid Deployment The UNAVCO Facility responded to a rapid response request by PIs Giovanni Sella and Roy Dokka to re-establish the Grand Isle, LA continuous GULFNET station which was damaged by Hurricane Katrina. GULFNET is a multiagency supported continuous GPS network that is used for scientific research and navigation.
Read more
2005-09
GPS Monitoring of Upcoming Cascadia Episodic Tremor and Slip Event GPS Monitoring of Upcoming Cascadia Episodic Tremor and Slip Event With 10 GPS stations recently installed across the northern Olympic Peninsula, the campaign GPS deployment to monitor the imminent Cascadia episodic tremor and slip event is underway. On August 4, 2005, permitting was completed for GPS installations in Olympic National Park where the bulk of the sites on the peninsula will be located. Since then, four GPS stations have been installed in the park and another 20 GPS units are scheduled for deployment in the Olympic Peninsula and Puget Sound regions in upcoming weeks.
Read more
2005-08-22
Students Work Students Work "Hands-On" with the PBO Project With PBO reconnaissance and installation in full swing for the summer, UNAVCO has hired several Student Assistants on field crews in four of the six regions. One Summer Student Assistant has also been hired to help with data management at UNAVCO headquarters in Boulder, CO. These summer jobs are part of UNAVCO's efforts to broaden participation in science by including students in UNAVCO, PBO, and EarthScope activities.'
Read more
2005-08-02
Antarctic Survey Training A three-day training course was held at UNAVCO for members of three science groups who will be using precision GPS equipment in the upcoming Antarctic field season. This course covered the basics of GPS technology, Trimble 5700/R7 receiver systems, survey techniques, and data processing and quality checking using Trimble Geomatics Office software.
Read more
2005-08
Extreme Environment Testing of Trimble NetRS Receivers The UNAVCO Facility has begun testing all Trimble NetRS receivers in the newly acquired temperature chamber to ensure that all components meet the manufacturer environmental specifications. Currently, eight receivers can be tested at one time.
Read more
2005-08
Airborne Laser Swath Mapping (ALSM) Survey of the southern San Andreas and San Jacinto faults An ultra high resolution topographic dataset covering major fault systems in Southern California was produced using Airborne Laser Swath Mapping (ALSM), airborne photogrametry and GPS. The survey area included nearly 1000 km of the San Andreas and San Jacinto faults, from Parkfield in the north to the Salton Sea in the south.
Read more
2005-08
Summit Camp Survey, Greenland Several surveying tasks were completed at Summit Camp, a research station at the highest point of the Greenland ice sheet. The camp layout and infrastructure had changed significantly since the last UNAVCO survey in 2003, so the camp was re-surveyed and the camp plan drawing was updated to reflect the current layout.
Read more
2005-08
Yellowstone Park GPS Installation Update Yellowstone Park GPS Installation Update Based in Montana for the summer, the Rocky Mountain regional staff is working in the Yellowstone/Teton area to install GPS monuments, set up a communications network, and perform reconnaissance and permitting activities throughout Montana, Wyoming, and Idaho. There are currently eight sites scheduled to be installed in Yellowstone National Park over the next several months: five monument installations this summer and three installed next summer (2006). So far, six of the eight sites have been identified and permitted. Additionally, a few sites just outside of the park are part of the Yellowstone monitoring network.
Read more
2005-07-27
PBO Crews Hit the Mark on Akutan Volcano, Alaska! PBO Crews Hit the Mark on Akutan Volcano, Alaska! The PBO crews on Akutan have reached their goal of installing eight continuous GPS stations as of July 5th, a full week and 25 hours of helicopter time ahead of the project schedule. The PBO crews have persevered through difficult weather and challenging environment. The following are details of the PBO crew member experiences since July 26, 2005 through July 5, 2005 provided by Mike Jackson, PBO Director and leader of the Akutan installations.
Read more
2005-07-08
PBO's Rocky Mountain Regional Staff Relocate to Montana for Summer Season PBO's Rocky Mountain Regional Staff Relocate to Montana for Summer Season PBO Rocky Mountain Regional Engineer Steve Borenstein and Field Engineer David Kasmer loaded up their truck and trailer with over a ton of GPS equipment and drove from their office in Boulder, Colorado to Bozeman, Montana, where they will remain for the duration of the summer. Steve, David, and Field Engineer Tom Lyman will install 12 (8 shallow-drilled and 4 deep-drilled) GPS monuments and set up a communications network in the Yellowstone/Teton region. Concurrently, the crew is working on reconnaissance and permitting activities throughout Montana, Wyoming, and Idaho.
Read more
2005-07-05
GGN Pietown GPS System Maintenance A site maintenance visit was recently conducted at the PieTown, NM (PIE1) IGS station. The station is co-located with the PieTown VLBA station. After an earlier antenna replacement this summer an anomalous error was noticed, manifesting itself as a large position offset.
Read more
2005-07
Cascadia Episodic Tremor and Slip Event The campaign GPS deployment to monitor the upcoming Cascadia Episodic Tremor and Slip event is underway, with the first 3 of an expected 30 stations installed on 2 August in the western Olympic Peninsula.
Read more
2005-07
RETREAT, Northern Italy Eight semi-continuous GPS sites were established in northern Italy in June 2005 as part of the ongoing RETREAT (Retreating-trench, Extension and Accretion Tectonics) project. Each site was equipped with a Trimble NetRS receiver and a Trimble Zephyr Geodetic antenna.
Read more
2005-07
High Arctic Field Course UNAVCO provided one field engineer to help instruct and field assist a three-week High Arctic Field Course lead by Ron Sletten (University of Washington) and Jeffrey Welker (University of Alaska, Anchorage). The course included twelve students from a variety of universities and of both biology and geology backgrounds, and at different stages of their academic careers.
Read more
2005-07
GPS Installations Heat up on Akutan Volcano, Alaska GPS Installations Heat up on Akutan Volcano, Alaska PBO, with our partners at the Alaska Volcano Observatory, has begun to install continuous GPS stations on the third volcano in the PBO network: Akutan, a 1300-meter-tall composite stratovolcano located in the Aleutian Islands about 1200 km SW of Anchorage, Alaska. Akutan was chosen as a target for PBO GPS studies because it is one of the most active volcanoes in the Aleutians, with 30 recorded historic eruptions including one in 1992, as well as intense ground deformation related to shallow dike intrusion in 1996. Akutan also has diverse magmatic systems, ranging from basalt through rhyolite, though most of its lavas are andesitic. PBO’s GPS studies of Akutan will help us better understand magma movements beneath plate margin volcanoes in a subduction zone, the dynamics of eruptive and intrusive processes, and help scientists improve eruption prediction and volcano hazards mitigation. PBO plans to install eight continuous GPS stations on Akutan during the next few weeks.
Read more
2005-06-28
First EarthScope Borehole Strainmeter Installation Completed! First EarthScope Borehole Strainmeter Installation Completed! Excited to complete the final installation steps of the first EarthScope borehole strainmeter, the PBO strainmeter crew began work early on Friday morning. After connecting the AC power at the enclosure, the engineers interfaced the strainmeter and other instruments with the power and opto-isolation systems. Following that, engineers assembled the satellite communications system (VSAT), connected it to the instrumentation, and began testing seismic and strainmeter data communications. Hurray!'
Read more
2005-06-21
First EarthScope Laser Strainmeter Installation Completed! First EarthScope Laser Strainmeter Installation Completed! A significant milestone has been reached for the Plate Boundary Observatory component of the EarthScope project. The first long-baseline laser strainmeter installation was completed on June 1, 2005. Since then, the strainmeter has successfully returned data to the Plate Boundary Observatory Data Collection Center located in Boulder, Colorado.
Read more
2005-06-20
Day Four of First Strainmeter Installation: Putting the Pieces Together Day Four of First Strainmeter Installation: Putting the Pieces Together Upon arriving at the site, we found good news: the concrete successfully blocked up the 6-inch casing, as the artesian water flowing out of the borehole now only comes out of the 2-inch PVC that holds the seismometer. From the opening of the borehole, crews measured 322 feet down to the top of the concrete. This area will be left open to allow the potential for other instruments to be installed in the future.
Read more
2005-06-20
Day Three: Installation Continues, and First Earthquake recorded! Day Three: Installation Continues, and First Earthquake recorded! Flush with the successful installation of the first PBO borehole strainmeter and seismometer, crews continued to finish work at the Hoko Falls station. The next steps included pouring layers of cement and sand into the borehole. First, 20-foot sections of 1-inch PVC were inserted into the borehole to a depth of 530 feet. After the field crew tested the seismometer and strainmeter instruments one last time for peace of mind, they lined up 94-pound cement bags and large buckets of water beside the mixer.
Read more
2005-06-17
First EarthScope Strainmeter Officially Installed! First EarthScope Strainmeter Officially Installed! Crews arrived at the Hoko borehole site first thing Tuesday morning ready to begin the testing of the strainmeter and continue preparing for the installation. First, crews tested the “trip mechanism” - a device that is used to dispense the grout once the 30’ dump bailer touches the bottom of the borehole. A couple of dry runs to the bottom of the borehole proved successful activation of the trip mechanism upon reaching the floor of the hole.
Read more
2005-06-15
PBO Strainmeter Crews Ready for First Installation – Take Two! PBO Strainmeter Crews Ready for First Installation – Take Two! PBO Strainmeter Engineers Bob Mueller, Mike Hasting, and Wade Johnson have been anxiously waiting for this week to arrive. After detecting unwanted noise while testing the first PBO borehole strainmeter during the first scheduled installation in March 2005, crews had to delay installation for “Unit 0” until the problem was identified and repaired. Once the unit was returned to the manufacturer’s labs in Australia, a small amount of condensation was detected in the instrument and was the culprit causing the extra noise. Since then, the problem has been repaired and the strainmeter sent back to the United States for this second installation attempt.
Read more
2005-06-14
NCA EBRP GPS installations: San Andreas Mega Cluster NCA EBRP GPS installations: San Andreas Mega Cluster PBO's Northern California region just finished a number of GPS installations throughout the East Bay regional parks (EBRP). Bulk permits for 10 GPS sites were obtained from EBRP and eight stations have been installed, three of which are deep drill braced monuments.
Read more
2005-06-02
Antenna Acceleration Calibration As the accuracy of GPS estimates of site position continues to improve the detection of smaller geophysical signals becomes possible. The capability of GPS for detecting short-term transient motions such as the minute motions caused by surface waves of seismic origin will be assessed.
Read more
2005-05
Barrow Arctic Science Consortium DGPS System Upgrade and Training UNAVCO coordinated an annual site visit to the Barrow Arctic Science Consortium (BASC) facility with the arrival of the research team from University of Texas, El Paso, (UTEP) to both upgrade the DGPS base receiver and train the UTEP team on the system.
Read more
2005-05
PBO Presence at the 2005 EarthScope National Meeting PBO Presence at the 2005 EarthScope National Meeting EarthScope held their first National Meeting on March 28-31, 2005 at the Tamaya Resort in Santa Ana Pueblo, New Mexico. The meeting began with presentations given by the EarthScope Organizing Committee on State of EarthScope – Science, Community, and Facility, and a keynote talk given by special guest Robert Smith, from the University of Utah, entitled “Yellowstone Hotspot: Integrative Research and Complimentary Goals of EarthScope.” The following days included several presentations on Science, Education, and Outreach, and a conclusion presentation on The EarthScope Vision.
Read more
2005-04-07
Survey training in Fairbanks, Alaska An 8-person, three-day course was taught by UNAVCO at the University of Alaska, Fairbanks, in April 2005. The class was a hands-on introduction to scientific surveying using UNAVCO GPS equipment, specifically, Trimble 5700/R7s. Static, fast static, post-processing kinematic, and real-time kinematic techniques were covered.
Read more
2005-04
Toolik Field Station DGPS system upgrade A Trimble NetRS receiver was installed as a real-time kinematic base at Toolik Field Station (TFS), on the north side of Alaska's Brooks Range. The NetRS replaced a Trimble 5700 installed in 2004, when the RTK system was established.
Read more
2005-04
Installation of the first Strainmeter Instrument (3) Installation of the first Strainmeter Instrument (3) Crews woke up to drizzling rain and cloudy skies this morning. Despite small openings in the sky, the wet weather persisted intermittently throughout the day. As the installation steps continued to be refined through "dry runs" outside the borehole, testing continued on the strainmeter. Inside the enclosed walls of a large truck to protect from them from the rain, PBO personnel continued to learn the workings and test results of the instrument. Unfortunately, unexplained noise appeared in the test results, and crews spent the rest of the afternoon trying to diagnose the problem.
Read more
2005-03-25
Installation of the first Strainmeter Instrument (2) Installation of the first Strainmeter Instrument (2) Crews met early this morning to begin working on the installation process. Another unusually sunny day in Sekiu, crews started out preparing the grouting pump and mixer. Test batches of grout were mixed to find the ideal consistency for the strainmeter install and to become familiar with the window of time available before the grout sets.
Read more
2005-03-16
Installation of the first Strainmeter Instrument Installation of the first Strainmeter Instrument After many months of planning and preparing, today marks the beginning of a new stage in the Plate Boundary Observatory project: installation of the first PBO strainmeter instrument.
Read more
2005-03-15
NASA/GGN Station Upgrade, Cordoba, Argentina The NASA/GGN Cordoba (CORD) GPS station is located at the Comision Nacional De Actividades Espaciales (CONAE) facility between Alta Gracia and Cordoba, in Argentina. The CONAE facility was originally used by the Argentinean military for missile development and testing.
Read more
2005-03
Mauna Loa Continuous GPS Network Install The University of Hawaii, the USGS Hawaiian Volcano Observatory and the UNAVCO Facility installed eleven new continuous GPS sites on Mauna Loa volcano, Hawaii, in March 2005.
Read more
2005-03
Transform Working Group Congregates in Sacramento to Discuss PBO Site Locations in Northern and Southern California Transform Working Group Congregates in Sacramento to Discuss PBO Site Locations in Northern and Southern California The Transform Site Selection Working Group met in Sacramento, California, for a one-day meeting on February 18, 2005. Led by Gerald Bawden, chair of the working group, the meeting adjourned at the end of the day with comprehensive station siting recommendations for the Northern and Southern California regions.
Read more
2005-02-28
Extension Site Selection Working Group Convenes in Tucson to Discuss PBO Basin & Range GPS Site Locations Extension Site Selection Working Group Convenes in Tucson to Discuss PBO Basin & Range GPS Site Locations A well defined and timely action plan recommendation is the result of a two-day Extension Working Group meeting held in Tucson, Arizona. Led by Rick Bennett, chair of the working group, the committee discussed the prioritization and possible re-location of planned GPS sites in the Basin and Range region.
Read more
2005-02-08
PBO Borehole Coring Begins: Crews Discover First Strainmeter Instrument Site PBO Borehole Coring Begins: Crews Discover First Strainmeter Instrument Site The morning of January 18th 2005 kicked off the next step in the PBO Strainmeter installation process: coring of the drilled boreholes. Coring began at the Goldbeck site, one of the eight boreholes drilled in the Pacific Northwest region. This next step is essential in determining whether or not the chosen borehole location is made up of competent enough rock to host a strainmeter instrument.
Read more
2005-01-25
PBO Magmatic Systems Working Group Discusses Y2 Installations PBO Magmatic Systems Working Group Discusses Y2 Installations Members of the Magmatic Systems Working Group convened in Vancouver, WA on January 18, 2005 to discuss scientific priorities for this years upcoming strainmeter and GPS installations located on and around volcanoes and calderas. The group meets once per year to advise PBO on science priorities and provide specific recommendations for station relocations. This year the PBO working group used the USGS Cascades Volcano Observatory facilities to hold the all-day meeting. Site selection and relocation issues were discussed for the Alaska (Aleutians), Rocky Mountain (Yellowstone), Pacific Northwest (Cascades volcanoes), Northern California (Mt. Shasta and Medicine Lake), and Southern California (Long Valley) regions. Committee members discussed recent volcanic unrest combined with existing and planned infrastructure.
Read more
2005-01-21
Preliminary analyses of the 12/26/2004 Mw 9.0 Earthquake in Indonesia Dr. Jeff Freymueller (University of Alaska) has analyzed the most recent data from the CGPS site SAMP (Sampali, Medan, Sumatra), located on the east coast of Sumatra. The solutions for the coseismic offset below represent the average of one week before and one week after the quake. Pre-quake solutions use JPL final orbits, post-quake use JPL rapid, and all solutions have been independently transformed to ITRF2000.
Read more
2005-01
Tundralab Receiver and Power Install A testbed receiver and power system was recently installed on Niwot Ridge near the Continental Divide. The Niwot Ridge tundralab is located at 11,600 feet on the Continental Divide at the University of Colorado Mountain Research Station Facility.
Read more
2005-01
PBO Strainmeter Installation Update: A Whole New Frontier! (6) PBO Strainmeter Installation Update: A Whole New Frontier! (6) Last Friday morning, the drillers arrived at the site early to prepare for the cement truck. Section by section, the drill rig pipe was put back together and inserted into the borehole until reaching the bottom. Once in place, the drillers connected the piping to the float shoe which was welded onto the piece of casing resting at the bottom of the hole.
Read more
2004-11-16
PBO Strainmeter Installation Update: A Whole New Frontier! (5) PBO Strainmeter Installation Update: A Whole New Frontier! (5) Hurray - it`s done! Crews completed the drilling for the first of eight strainmeter boreholes in the PNW.
Read more
2004-11-16
PBO Strainmeter Installation Update: A Whole New Frontier! (4) PBO Strainmeter Installation Update: A Whole New Frontier! (4) BRRRRR! Crews woke up to temperatures below freezing, making it hard to roll out of bed and get working in the chilly weather. Regardless, activity at the site began at the usual time of 7am by taking another depth measurement of the borehole. Due to some soft settling of materials at the bottom of the hole, the hole depth measured 506 feet. The big mission today: install enough 6-inch casing to line the entire borehole from bottom to top.
Read more
2004-11-05
PBO Strainmeter Installation Update: A Whole New Frontier! (3) PBO Strainmeter Installation Update: A Whole New Frontier! (3) Day number three of the BSM activity at Clark West continues. Crews are thankful for the beautiful morning weather, sunny and clear skies with temperatures in the fifties. While waiting for the loggers to arrive from Seattle, WA, people kept busy around the work site moving rock and piles of cuttings, preparing casing, and bagging samples. Overnight, water had filled the majority of the hole, stopping at just 31 feet below the ground surface. By 11am, the logging crew from Golder Associates were on site and ready to begin a series of four different logging tests. Each test takes quite a bit of time, having to lower the instrument to the bottom of the drill hole and slowly pull it up to the top, continuously taking measurements along the way.
Read more
2004-11-04
PBO Strainmeter Installation Update: A Whole New Frontier! (2) PBO Strainmeter Installation Update: A Whole New Frontier! (2) Last night a cold front came in, dumping almost an inch of rain at the drill site. Although the rain had stopped by the time everyone arrived at the drill site at AM, the temperature had fallen to a cold and damp 40 degrees.
Read more
2004-11-03
PBO Strainmeter Installation Update: A Whole New Frontier! PBO Strainmeter Installation Update: A Whole New Frontier! After a year of planning and organizing, today marks the onset of drilling for the first of 175 strainmeters. PBO is installing a network of state-of-the-art strainmeter instruments. The strainmeters use a mechanical extensometers and very sensitive displacement transducers to measure extension in three directions across a borehole. Sensitive enough to easily detect solid earth tides, observed changes in strain will enable scientists to monitor tectonic deformation between the Pacific and North America plates.
Read more
2004-11-02
Alaska Region Modifies GPS Monument In Order to Install on Difficult Terrain at Critical Location Alaska Region Modifies GPS Monument In Order to Install on Difficult Terrain at Critical Location It is expected that for each of the 875 PBO GPS stations installed, small modifications will need to be made in order to accommodate the vastly different rock and terrain conditions. Most recently, the PBO Alaska field engineers proved to be masterminds by creating a hybrid of the short and deep drilled braced monument in order to install the instrument at a scientifically critical point in Alaska...
Read more
2004-10-31
PBO Sends Emergency Response Team to Mt. St. Helens (2) PBO Sends Emergency Response Team to Mt. St. Helens (2) By the end of the day Wednesday, the PBO X-Men team finished the majority of the second station, P693. After Jackson and Feaux retrofitted the monument, workers from P697 flew over the crater of the volcano to join in on the P693 installation fun. Once again, a completed swing set was successfully slung over the volcano and dropped at the site. Borenstein and Friesen worked on installing the enclosures and antenna, finishing the installation by dusk.
Read more
2004-10-14
PBO Sends Emergency Response Team to Mt. St. Helens PBO Sends Emergency Response Team to Mt. St. Helens PBO Director Dr. Mike Jackson and Rocky Mountain Regional Engineer Steve Borenstein hit the road in a flash from Boulder, CO, Sunday morning in response to the unexpected recent activity at Mt. St. Helens. Having spent the previous week gathering emergency response GPS materials, packing up the UNAVCO truck and trailer, and making sure their living wills are up to date, Jackson and Borenstein began driving across the country in a Ford F350 truck making just one stop on the way: to pick up PBO's Basin & Range Regional Engineer, Greg Hilker, from Salt Lake City, UT.
Read more
2004-10-13
PBO Sends Emergency Response Teams to Parkfield Earthquake PBO Sends Emergency Response Teams to Parkfield Earthquake In response to the recent magnitude 6.0 earthquake, PBO crews from the California offices have spent the last two weeks working hard to install a total of five emergency response GPS stations in Parkfield, CA.
Read more
2004-10-08
RETREAT, Italy and Croatia RETREAT (Retreating-trench, Extension, and Accretion Tectonics) is a multidisciplinary project to develop a self-consistent dynamic model of syn-convergent extension, using the northern Apennines, northern Italy, as a natural laboratory.
Read more
2004-10
Antarctic Program Support 2004-2005 A record 80 geodetic GPS receivers were deployed by UNAVCO Polar Services to Antarctica in support of 25 individual PI-based projects in the United States Antarctic Program.
Read more
2004-10
Augustine Volcano Installation Update (12) Augustine Volcano Installation Update (12) Whew! What an incredible adventure! Those of you who have been following the progress of the Augustine project are aware that the installation and base camp updates suddenly stopped on September 18, 2004. Due to the unpredictability of Mother Nature, our internet connection was cut off when strong winds and rain storms circled Augustine. Starting where we left off, here's how the rest of the journey continued...
Read more
2004-09-30
Augustine Volcano Installation Update (11) Augustine Volcano Installation Update (11) YAY! Yesterday, crews completed volcano station AV05 and mainland station AC27. Charna Meth helped Tom Corbett and Mike Jackson apply finishing touches on the mainland station while Barrett Friesen and Seth Friedly finished AV05. Some of the VIPs rode along in the helicopter to make minor adjustments to a couple of the finished stations. Later in the day the wind was calm enough, a trip to the summit of the volcano was made where Mike Jackson deployed another USGS campaign station. Today, crews will be slinging gear back to base camp from a couple of the stations and applying any necessary final touches to the completed stations.
Read more
2004-09-18
Augustine Volcano Installation Update (10) Augustine Volcano Installation Update (10) While high winds kept crews away from mainland site AC27 yesterday, Charna Meth helped as Mike Jackson installed two campaign stations on the volcano for USGS. Winds at AV05 were light enough in the morning to get Karl Feaux, Dave Mencin, Barrett Friesen, and Seth Friedly up to the site working on the installation. Working conditions became rough when the wind picked up, throwing pea-sized rocks into the faces of the crew, and making it difficult to keep equipment and materials from blowing away. By 4:30 p.m., when they were scheduled to be picked up by the helicopter, winds were so heavy that the aircraft was unable to land at AV05.
Read more
2004-09-17
Augustine Volcano Installation Update (9) Augustine Volcano Installation Update (9) Yesterday, workers completed about 98% of station AC27. Fortunately the weather was nice, with a little bit of a breeze keeping the mosquitoes away for the majority of the day. Once again the crew was safe from bears, but was joined by a small herd of caribou near the station. Meanwhile, another crew was able to make it up to AV05, finishing about 50% of the installation by the end of the day. Although it was pretty cold up at the top, the skies were mostly clear and sunny.
Read more
2004-09-16
Augustine Volcano Installation Update (8) Augustine Volcano Installation Update (8) By the end of Tuesday, three holes were drilled for mainland station AC27, and the hut was slung over and put into place. Heavy winds and frozen rain created hard working conditions for most of the day. We continue to be fortunate enough not to have any bear encounters. While that crew was working on station AC27, Dave Mencin and Steve Borenstein brought more batteries and a repeater for communications to station AV02. The repeater will enable mainland station AC27 to communicate with Homer. A quick stop at AV04 allowed the crew to modify a power connection and hook up grounding rod and wire.
Read more
2004-09-15
Augustine Volcano Installation Update (7) Augustine Volcano Installation Update (7) Unfortunately, heavy winds kept the crews at camp for most the day Monday. Flying into the wind, it took the AC27 crew 45 minutes to fly 20 miles over to the mainland from Base Camp. Once near the site, the pilot turned the aircraft around due to strong wind and turbulence, fearing that a return flight to pick the crew up might be too risky. Returning to Base Camp only took 15 minutes since the helicopter was flying with the wind. Unfortunately, it was also too windy to reach AV05, the last volcano station to be installed.
Read more
2004-09-14
Augustine Volcano Installation Update (6) Augustine Volcano Installation Update (6) A crew headed over to the mainland yesterday to take a look at the proposed location for AC27. Due to bad bedrock, the site will be moved about a mile south of its originally planned location. Mike Jackson and Ben Pauk circumnavigated the volcano yesterday afternoon to collect metadata from stations. Due to high winds, they were only able to make it to stations AV02 and AV03.
Read more
2004-09-13
Augustine Volcano Installation Update (5) Augustine Volcano Installation Update (5) Moving right along! As of end of the day Saturday, crews have completed a total of five out of seven stations. The last two stations to install are AC27 and AV05. AC27 is located on Chenik Mountain in the McNeil River State Game Refuge, and AV05 is located on the northeast side of the volcano at 3500 feet.
Read more
2004-09-12
Augustine Volcano Installation Update (4) Augustine Volcano Installation Update (4) Yesterday (Friday, September 10, 2004) was definitely the chilliest day so far; clouds covered the volcano keeping the visibility low. By the end of the day, crews had completed the drilling and set up the swing set for site AV02. Sleet-like rain made it hard for workers to keep dry and warm. Needless to say, everyone was very happy to return to base camp at the end of the day.
Read more
2004-09-11
Augustine Volcano Installation Update (3) Augustine Volcano Installation Update (3) Yesterday a crew flew to the Cook Inlet where the AC59 site is located. Overcast skies and rain didn`t stop the crew from getting a good start on the installation. The crew installed all electronics and drilled two holes for the monument. Unfortunately, they encountered highly fractured and weathered rock below the surface of the planned drilling location, making it necessary find a new area to install the monument.
Read more
2004-09-10
Augustine Volcano Installation Update (2) Augustine Volcano Installation Update (2) The Augustine project continues to be on schedule. Yesterday, crews finished the installation at site AV04 and came close to completing AV01. Today the weather has changed and clouds are coming down over the volcano. Although it represents a change in plans, it`s hard not to be in awe of the thick, smoky white clouds rolling and billowing over the top of Augustine. The temperature has dropped quite a bit and it looks like it might rain. Because of the clouds the helicopter will not be able to fly up to the AV05 site. Currently a field crew is up at the AV01 site putting the final pieces together and should be finished shortly. A second crew is heading over the main land to work on the Ursus Head site, AC59.
Read more
2004-09-09
Augustine Volcano Installation Update Augustine Volcano Installation Update Base camp on Augustine Volcano is fully set up and operating about 60 yards away from the shore on the west side of the volcano. Surrounded by tall, thick brush, we had to clear an area large enough for a helicopter landing pad, base camp kitchen, and sleeping tents. One large weather port is set up to act as the main common area for cooking, eating, and working. Two smaller structures serve as storage room for food and equipment. The Homer internet trailer is set up and camp is now connected to the internet using a Hughes DC powered VSAT system. Field days start at 6:30 AM and finish at about 9:30 PM with helicopters ferrying people on and off the volcano installations sites. Handheld radios are used to communicate between the aircraft, installation sites, and base camp. Satellite phones are used for emergency communications and internet keeps the camp in touch with the world.
Read more
2004-09-08
Three New DDBM Installations in Washington State Katrin Hafner and Peter Gray (Pacific Northwest Region) were busy during the month of June installing three Deep Drilled Braced Monuments (DDBM) in Washington state. Assisted by Karl Feaux and Steve Borenstein of the PBO Boulder office, all three sites were finished in nine days and have been transmitting data through VSAT or VSAT/radio combination.
Read more
2004-08
Glacial Rebound GPS is measuring the present motions associated with the response of the earth to the great mile-thick ice sheets that covered the area 18,000 years ago. Long after the glaciers melted, we use the Global Positioning System (GPS) satellites to "see" the land moving -- up to half an inch per year in some places -- as the earth rebounds in response to the ice that once pushed the land down.
Read more
2004-07
Strategic Planning Meeting - May, 2004 A Strategic Planning Meeting was held at Estes Park, Colorado as a first step in preparing a strategic plan to guide UNAVCO over the time period 2005 to 2009.
Read more
2004-05
Bench Glacier Campaign Four Trimble 5700 GPS receivers were deployed on Bench Glacier (Chugach Range, Alaska) near Valdez, with a fifth receiver serving as the reference base station on bedrock. Shad O'Neel provided field support to deploy the receivers. The project measures precise uplift and surface strains associated with the passage of a seasonal wave measured last year by Robert Anderson.
Read more
2004-05
BARGEN Network Maintenance Maintenance was performed at two GPS sites in the Basin and Range Geodetic Network (BARGEN) in northwestern Nevada. A telemetry relay antenna at the summit of Mt. Lewis was repaired.
Read more
2004-05
Toolik Field Station DGPS system A survey grade real-time differential GPS system was installed for dedicated use at Toolik Field Station (TFS) on the north side of Alaska's Brooks Range. The Trimble 5700 receiver system meets the emerging demand for centimeter-level surveys, and is capable of both real-time and post processed surveys.
Read more
2004-05
Surveying with UNAVCO GPS Equipment During the first week of April, fifteen scientists came to UNAVCO to participate in the inaugural Surveying with UNAVCO equipment. The purpose of this course was to train the diverse community of scientists in the steps required to perform a survey with GPS.
Read more
2004-04
Campaign Receiver Testing for Plate Boundary Observatory The UNAVCO Facility routinely performs equipment tests in support of community activities. Recently, the Facility has been testing GPS receivers for procurement by the Plate Boundary Observatory project, including receivers for permanent stations, and receivers intended for Campaign use.
Read more
2004-03
Saudi Arabia In March of 2002, two new permanent GPS stations were deployed in Saudi Arabia. They were remotely located, DC powered sites with cellular modems installed for wireless communications, and data transfers.
Read more
2004-03
Harvest Oil Platform, California A communications link upgrade was the goal on the latest visit to the Harvest Oil Platform off the coast of Santa Maria, California. Prior to the installation of the HUGHES VSAT satellite system, a cell phone link had been the reliable method for data retrieval from the platform.
Read more
2004-03
The first PBO deep monument installation at Marshall Field, Boulder, CO February 5th and 6th, 2004: The first PBO deep monument installation at Marshall Field, Boulder, CO.
Read more
2004-02
Easter Island Permanent IGS Station Installation (ISPA) and Existing Site (EISL) Maintenance Station Isla de Pascua (ISPA) was established at Latitude: S 27.12498 and Longitude: W 109.34441. This new Easter Island station was installed to replace the existing station EISL, which has lost sky view due to the proliferation of Eucalyptus trees, and also to utilize the new IRIS VSAT Internet link.
Read more
2004-02
West Antarctica TIDES Project Ice from the West Antarctic Ice Sheet flows to the sea through a series of ice streams; the factors controlling the flow of the ice streams are not well understood. Recent observations give a brief glimpse of the surprisingly sensitive reaction of the ice streams to tidal oscillations.
Read more
2004-01
PBO Paso Robles Earthquake Response On December 22, 2003, a magnitude 6.5 earthquake occurred on the Oceanic fault zone in the Santa Lucia Mountains of coastal Central California. The earthquake killed two people and collapsed or severely damaged 40 buildings in the Paso Robles-Templeton area.
Read more
2003-12
RETREAT, Italy RETREAT (Retreating-trench, Extension, and Accretion Tectonics) is a multidisciplinary project to develop a self-consistent dynamic model of syn-convergent extension, using the northern Apennines, northern Italy, as a natural laboratory. This is a collaborative effort among Yale, University of Washington, Lehigh, Purdue, USC, SAO, and Italian colleagues.
Read more
2003-10
Global GPS Network Equipment Upgrade, Cachoeira Paulista, SP, Brazil The Permanent IGS Station in Cachoeira, Paulista, SP, Brazil, (CHPI) is operated by The National Institute for Space Research (INPE), the Jet Propulsion Laboratory (JPL) / NASA and UNAVCO. A site maintenance visit was carried out in May of 2003, upgrading the GPS equipment to a new Ashtech Z-Reference station receiver and chokering antenna. A meterological package measuring temperature, pressure, and humidity was also installed.
Read more
2003-05
Mississippi Delta One of this projects' goal is to reconstruct the history of sea level in the Mississippi Delta for the last 2000 years through the collection and dating of peat samples. The GPS component of this project is to measure the elevations of the peat sample locations with cm accuracy and to quantify the vertical errors involved. UNAVCO provided four GPS systems, field support, and data processing support.
Read more
2003-05
Taal Volcano GPS Network Maintenance The Taal Volcano L1 GPS network was installed in July, 1999 with yearly maintenance trips since then to improve and expand telemetry and observation points. The network currently consists of 12 remote continuous L1 stations in addition to 3 continuous dual frequency stations.
Read more
2003-03
BARGEN Network Densification The Basin and Range Geodedic Network (BARGEN) is a collaborative project between the California Institute of Technology Division of Geological and Planetary Sciences and the Harvard-Smithsonian Center for Astrophysics. This project included the installation of three additional sites to the existing 50 site BARGEN network.
Read more
2003-01
Seychelles GPS Equipment Upgrade The station SEY1 is located on the island of Mahe in the republic of Seychelles. The GPS station is collocated with a seismic station run by the University of California, San Diego. The purpose of the visit to the station, in January of 2003, was to update and exchange of the existing computer and GPS systems.
Read more
2003-01
Yellowstone Norris Geyser Basin Response A temporary, five-station GPS network was installed in Yellowstone National Park in response to increased heat and steam emissions in parts of Norris Geyser Basin. The network was installed by a UNAVCO engineer, University of Utah students and faculty, and National Park Service scientists as part of a monitoring effort by Yellowstone Volcano Observatory (YVO).
Read more
2003-08
McCall Glacier McCall Glacier in the northern Brooks Range is used as an index for glacier contributions of fresh water inputs into the Arctic Ocean. The primary efforts are directed towards mass balance and flow dynamics. Bjorn Johns supported the most intensive initial season of the project to establish a local network and re-survey previous mass-balance locations.
Read more
2003-05
Vertical Ground Motion Monitoring, Las Vegas The GPS Station UNR2 is located in Mesquite Nevada, approximately 60 miles North East of Las Vegas. The purpose of the permanent GPS station is to measure the vertical ground motion as water is extracted from the water table below. The GPS equipment is contained in a water pumping station which has been recently installed and is maintained by the Virgin Valley Water District.
Read more
2003-05
Taku Glacier, Southeast Alaska Taku Glacier is located in SE Alaska near Juneau. It is currently advancing into proglacial sediments and deforming them into bulges. This advance is studied using a variety of techniques. GPR and radar echo sounding will be used to measure ice thickness.
Read more
2003-03
Salmon Falls Creek Landslide Monitoring Project, Twin Falls, Idaho A landslide is pinching off the Salmon Falls Creek and as a result a natural dam is forming. The potential instability of the dam is cause for concern as there are several communities located downstream of the landslide. Idaho State University requested UNAVCO support for the deployment of GPS instrumentation in order to monitor the progress of the slowly creeping slide.
Read more
2003-02
Easter Island (EISL) Permanent IGS Station Upgrade and Reconnaissance The Permanent IGS Station on Easter Island (EISL) is operated by the Center for Space Studies at the University of Chile, the Jet Propulsion Laboratory (JPL)/NASA and UNAVCO. The station is located at the old Easter Island Laser Station installed by the NASA Space Geodesy Program in 1992.
Read more
2003-01
 

Last modified: Monday, 25-Aug-2014 22:30:29 UTC

 

Sponsored by

National Science Foundation Logo National Aeronautics and Space Administration Logo