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
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Mount St. Helens Network Maintenance Brings All Stations Online
November 10, 2014
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.
Russian GLONASS Global Navigation Satellite System April Outage and UNAVCO
December 15, 2014
The Russian GLONASS Global Navigation Satellite System experienced a ten-hour outage beginning at 21:00 UTC on April 1st, 2014 that affected a significant number of GNSS receivers operated by UNAVCO and our collaborators.
UNAVCO installs COCONet cGPS site CN18 on Swan Island Honduras
December 05, 2014
COCONet cGPS site CN18 was installed on Swan Island, Honduras, and is poised to collect particularly valuable atmospheric and geodetic data because it will provide coverage in a remote part of the world with little data availability.
Join UNAVCO at AGU
December 03, 2014
Visit our booth, attend an event, and keep up with UNAVCO work through our staff presentations.
SCIENCE SNAPSHOTS
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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.
Unrecognized Rapid Ice Loss in Northeast Greenland Due to Warming
May 13, 2014
The ice stream in northeast Greenland shows rapid ice loss because of rising air surface temperatures and the loss of sea ice, which is associated with rising sea surface temperatures. The thinning glaciers are detected by a combination of satellite and aerial imagery plus GPS measurements of ground surface rebound due to rapid ice mass loss. Models do not predict the northeast sector of the continent to show such melting with consequences for under-estimating sea level rise.
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.
Estimating plate boundary slip during large earthquakes: seafloor geodesy during 2011 Tohoku-oki Earthquake in Japan
September 1, 2012
The forces of the Japanese Tohoku-oki 2011 magnitude 9.0 earthquake, the fifth most powerful in the past century, set off a large tsunami that further devastated the shaken island. The earthquake and tsunami also badly damaged a six-reactor nuclear power plant in Fukushima, located 241 kilometers north of Tokyo.
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: Friday, 23-Jan-2015 20:58:22 UTC
2015