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.
July 27, 2015
In response to the Mw 6.9 earthquake 73km southwest of Nikolski, Alaska on July 27, 2015, one-sample-per-second (1-sps) GPS data are being collected for a 7-day period around the event (day of event ± 3 days). Once downloaded, data will be available from ftp://data-out.unavco.org/pub/highrate/.
July 28, 2015
UNAVCO asked 11 geoscientists at our March 2014 Science Workshop, “Do you call yourself a geodesist?” The answers were diverse and highlight the expanding research opportunities of geoscientists plus the expanding use of geodesy and geodetic tools in other fields of science and engineering.
June 30, 2015
The 35th anniversary of the catastrophic May 18, 1980 eruption of Mount St. Helens provided the opportunity to share with the public how far volcano monitoring has come in the last three and a half decades, and the role played by the EarthScope Plate Boundary Observatory in maintaining instrumentation on the volcano's flanks. What signs do scientists watch for leading up to an eruption? How do we measure deformation of a volcano?
May 6, 2015
Eight years of observations of millimeter-level vertical surface changes from a dense network of Global Positioning System (GPS) receivers in the Pacific Northwest tracks a fluctuating water load due to varying precipitation. The observations track seasonal variations (i.e., more rain or snow in the fall and winter) and the drought of 2008-2010.
June 23, 2015
Intrusive unrest at Bárðarbunga Volcano in Iceland in 2014 shows segmented lateral dike growth creating new crust where the tectonic plates separate.
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.
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.
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.
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.
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, 31-Jul-2015 02:12:16 UTC