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.
January 27, 2016
For those interested in calculating the effect of snow loading from GPS data, UNAVCO would like to highlight resources available through the UNAVCO archive. GPS data collected through the EarthScope Plate Boundary Observatory and other networks in the footprint of winter storm Jonas with data archived at UNAVCO are available via ftp or through the UNAVCO Data Archive Interface.
January 25, 2016
In response to the Mw 7.1 earthquake 83 km east of Old Iliamna, Alaska on January 24, 2016, also known as the Iniskin earthquake, high-rate one-sample-per-second (1-sps or 1 Hz) GPS data are being collected from PBO stations within 400 km of the epicenter for a 7-day period around the event (day of event ± 3 days).
January 08, 2016
Collecting continuous GNSS data requires enormous investments in planning, hardware, and physical effort. Getting those data back to a central repository for distribution as quickly and reliably as possible presents even more challenges.
January 7, 2016
UNAVCO’s Geodetic Data Services (GDS) program has created a new Google Community for technical news. The GDS Technical News Page will feature information of interest to expert users in the geodetic community, and community members are encouraged to join and contribute questions and news items of their own.
November 13, 2015
Vertical motions measured by GPS ground stations can be used to track water loads related to precipitation in Ethiopia and Eritrea. The network monitors the seasonal East African monsoon and a smaller regional rainy season. The GPS network is an effective water monitor for the region, where most of the population is agriculture-based.
January 27, 2016
Airborne and terrestrial Lidar data of volcanic interior systems in the about 4 million year old San Rafael volcanic field in Utah details 7 sill forming events and 12 conduit forming events. The large volume of shallow sills show that these structures are important for eruption dynamics and inform studies of active volcanoes, particularly their patterns of unrest.
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.
October 2, 2015
Combining geodetic and seismic measurements for the moderate 2014 Mw 6.1 Napa, California earthquake shows that rapid earthquake assessment is effective, so in a future real-time implementation, early responders will have more information to know where to concentrate their efforts to mitigate losses.
Last modified: Wednesday, 03-Feb-2016 18:31:31 UTC