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.
June 13, 2016
In response to the Mw 10 June 2016 Mw 5.2 Earthquake 20km NNW of Borrego Springs, California on 2016-06-10 at 12:09:02 (UTC) on 2016-04-16 23:58:37 (UTC), UNAVCO has processed high rate one-sample-per-second (1-sps or 1 Hz) borehole strainmeter data from borehole strainmeters in the Plate Boundary Observatory (PBO) and is downloading 5-samples-per-second (5-sps or 5 Hz) data for PBO GPS stations within an 80 km radius around the epicenter of the event.
April 17, 2016
In response to the Mw 7.8 earthquake 7.8 Earthquake 27km SSE of Muisne, Ecuador on 2016-04-16 23:58:37 (UTC), UNAVCO has processed high rate one-sample-per-second (1-sps or 1 Hz) borehole strainmeter data from all borehole strainmeters in the Plate Boundary Observatory (PBO). The fully processed 1-sps borehole strainmeter (BSM) dataset spanning the time period of this event is now available at http://borehole.unavco.org/bsm/earthquakes/ 20160416_MuisneEcuador/.
April 04, 2016
In response to the Mw 6.2 earthquake 100km NNE of Chignik Lake, Alaska on 2016-04-02 05:50:00 (UTC), UNAVCO is downloading high rate one-sample-per-second (1-sps or 1 Hz) GPS data from PBO stations within 250 km of the epicenter for a 7-day period around the event (day of event ± 3 days).
March 30, 2016
UNAVCO engineers in collaboration with the City of Sitka installed station AKSI in Sitka, Alaska, on the historical Sitka Post Office. The station is part of the National Geodetic Survey (NGS) CORS network that provides GNSS data in support of three-dimensional positioning, meteorology, space weather, and geophysical applications.
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.
June 14, 2016
The 7 November 2012 moment magnitude 7.4 Champerico (Guatemala) earthquake is among a growing number of subduction zone events observed by a local geodetic network. The GPS data show up to 2 meters of slip over a 30 by 30 square kilometer area on the fault at a depth of 10 to 30 kilometers. The data refine the location of the earthquake, increasing our understanding of faults and plate motions as well as earthquake risk resiliency.
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.
March 4, 2016
GPS sensors record the motion of the Helheim Glacier in Greenland as ice calving occurs at its terminus. As the iceberg rotates and rolls off sideways, the glacier springs backwards and moves downwards. This action produces an earthquake and the GPS sensors record all the motion and help to explain how glacial earthquakes occur.
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: Thursday, 23-Jun-2016 17:34:17 UTC