U N A V C O , A N O N - P R O F I T U N I V E R S I T Y - G O V E R N E D C O N S O R T I U M , F A C I L I T A T E S G E O S C I E N C E R E S E A R C H A N D E D U C A T I O N U S I N G G E O D E S Y.
We challenge ourselves to transform human understanding of the changing Earth by enabling the integration of innovative technologies, open geodetic observations, and research, from pole to pole.
WHAT'S HOT
view all- Workshop on Future Seismic and Geodetic Facility Needs in the Geosciences (May 3-6)
- What is EarthScope? Why surveyors should know
- Data Product Announcement: Updated & Enhanced GPS Products Now Available
- 2014-11-02 NOTICE: To UNAVCO GPS Data Product Users: Known Data Quality Issue with Some Previously Distributed Data Products
- Video: Glaciers are retreating: How can we measure the full ice loss?
- Video: UNAVCO (Explained in 3 Minutes).
HIGHLIGHTS
view all
UNAVCO installs COCONet cGPS site CN01 and upgrades sites BGGY and CN00 in Antigua and Barbuda
February 23, 2015
During this installation and maintenance trip, UNAVCO collaborated with the Antigua and Barbuda National Office of Disaster Service (NODS), University of the West Indies (UWI) Trinidad, and the US Geological Survey (USGS) to install a new station and maintain two others.
UNAVCO installs COCONet cGPS sites CN39 and CN41 in Venezuela
February 11, 2015
UNAVCO worked with the Fundación Venezolana de Investigaciones Sismológicas (funvisis) to install two of six new COCONet GPS sites in Venezuela: sites CN39 - Quebrada Arriba and CN41 - El Baul.
RESESS Interns Present Research at Scientific Conferences
January 27, 2015
This past fall, 15 2014 RESESS interns and RESESS alumni participated in the Geological Society of America (GSA) Annual Meeting in Vancouver, British Columbia and the Fall Meeting of the American Geophysical Union (AGU) in San Francisco, California.
Mount St. Helens Network Maintenance Brings All Stations Online
January 20, 2015
Continuous GPS stations at Mount St. Helens installed in collaboration with the USGS Cascade Volcano Observatory (CVO) help scientists monitor and better understand Mount St. Helens both for risk assessment and for applying new knowledge to other volcanoes worldwide. PBO GPS station maintenance on Mount St. Helens in September 2014 focused on making three stations on the volcano more robust for transmitting data throughout the winter and bringing eight “silent” stations back online.
Workshop to Assess Field Education Support by the GAGE Facility
December 24, 2014
On November 17 and 18, 2014, 21 faculty and researchers interested in incorporating geodetic instrumentation and tools into field education met at UNAVCO in Boulder, Colorado for the Field Education and Support by the UNAVCO GAGE Facility Workshop. The goal of this workshop was to bring together educators who are interested in, or are already actively using, geodesy in a field education context.
SCIENCE SNAPSHOTS
view all
Plate Boundary Observatory as a Hydrological Network to Monitor Drought
September 18, 2014
The Plate Boundary Observatory in the western United States consists of more than 1,100 continuously operating GPS stations deployed to record the Earth’s surface response to tectonics. Now the network is being used as a hydrological monitor. This study shows that the western U.S. lost about 240 gigatons of water in 2013-2014. The observatory is a sensitive hydrological monitor that can help manage water resources.
Rifting in Eastern Africa: Geodetic Data Deciphers Spreading Forces
October 7, 2014
The driving forces of the East African Rift System are deciphered by modeling GPS and seismic data of present-day rifting. The models show that density variations within the lithosphere, causing gravitational potential energy (GPE) gradients are driving the current plate spreading in East Africa.
Detecting Volcanic Plumes with GPS Data
July 26, 2013
GPS data were used to detect volcanic plumes from eruptions of Mount Redoubt in Alaska. Unlike past research, this study relied on the signal strength, or signal to noise ratio (SNR), data. The new method is powerful because simple models can be used to quickly model SNR data and the SNR data are not sensitive to water vapor.
Ice Mass Loss on North Antarctic Peninsula Linked to Fluid Upper Mantle
February 23, 2015
The North Antarctic Peninsula (NAP) has lost significant ice over decades and the amount and rate of land rebound as the ice is removed can be used to decipher the structure of the crust and upper mantle. Using vertical motion of the land recorded at the Palmer GPS site since 1995, augmented with other GPS data and a simple four-layer model yields a thicker crust and a more fluid upper mantle than expected.
Sea Level Rise on the U.S. Gulf Coast
February 6, 2013
The Mississippi Delta along the Gulf Coast of the United States is a major site of sediment deposition from the Mississippi River and conversely a major site of wetland loss from rising seas and subsidence. There is debate about how much and when the delta has risen or fallen due to deposition, subsidence, sea level change, and erosion.
Mapping the Seafloor with Gravity Models
February 18, 2015
Most of the ocean floor is unknown. Gravity models generated from satellite radar altimetry provide one of the only ways to map the height of the seafloor beneath all of the oceans. Years of data and thousands of satellite tracks have yielded unprecedented detail of major spreading ridges and thousands of seamounts.
Quality Assessment: A new technique to assess and monitor long-term quality of GPS data
March 7, 2013
Geoff Blewitt and Corne Kreemer of UNR’s Geodetic Laboratory have devised a new processing-based technique for evaluating site quality on an ongoing basis.
Last modified: Thursday, 26-Feb-2015 21:34:34 UTC
2015