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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.

 
 

HIGHLIGHTS

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Data Available for Winter Storm Jonas

Data Available for Winter Storm Jonas

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.

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Data Event Response to the 24 January 2016 Mw 7.1 Earthquake 83km E of Old Iliamna, Alaska

Data Event Response to the 24 January 2016 Mw 7.1 Earthquake 83km E of Old Iliamna, Alaska

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).

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Back to the Mothership: How PBO Data Gets from Everywhere to Somewhere

Back to the Mothership: How PBO Data Gets from Everywhere to Somewhere

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.

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New Google Community for UNAVCO Geodetic Data Services Technical News

New Google Community for UNAVCO Geodetic Data Services Technical News

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.

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SCIENCE SNAPSHOTS

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Tracking Precipitation in Northeast Africa with GPS

Tracking Precipitation in Northeast Africa with GPS

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.

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Geodetic Data Yields Rapid Earthquake Assessment

Geodetic Data Yields Rapid Earthquake Assessment

February 11, 2016

GPS data combined with Interferometric Synthetic Aperture Radar (InSAR) images characterize the fault and slip distribution for the 24 August 2014 M 6.0 South Napa earthquake. These results show the utility of geodetic data for rapid earthquake response, especially in areas where teleseismic data may not constrain the complexities of damaging events.

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Detecting Volcanic Plumes with GPS Data

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.

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Ice Mass Loss on North Antarctic Peninsula Linked to Fluid Upper Mantle

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.

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Sea Level Rise on the U.S. Gulf Coast

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.

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Mapping the Seafloor with Gravity Models

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.

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Seismogeodesy for Rapid Earthquake Response

Seismogeodesy for Rapid Earthquake Response

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.

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Last modified: Friday, 12-Feb-2016 20:11:12 UTC

 

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