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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.

 
 

HIGHLIGHTS

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Monitoring Erosion on a Volcano: High Resolution Topographic Surveys of Mauna Kea, HI

Monitoring Erosion on a Volcano: High Resolution Topographic Surveys of Mauna Kea, HI

September 19, 2014

Mauna Kea, a dormant 13,800 foot tall volcano on the Big Island of Hawaii, is experiencing substantial natural and human-caused erosion at its summit. UNAVCO is helping Ryan Perroy of the University of Hawaii, Hilo to monitor these erosion rates by providing a baseline high-resolution topographic map of the summit area to quantify natural and anthropomorphic influences. This project will help to establish a habitat suitability model for the Wekiu bug, a rare endemic invertebrate species that is only found on Mauna Kea.

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Data event response to the 14 October 2014 Mw 7.3 earthquake 67km WSW of Jiquilillo, Nicaragua

Data event response to the 14 October 2014 Mw 7.3 earthquake 67km WSW of Jiquilillo, Nicaragua

October 16, 2014

In response to the Mw 7.3 earthquake 67km WSW of Jiquilillo, Nicaragua on October 14, 2014, UNAVCO is downloading high-rate GPS data from a total of 25 stations within 1,000 km of the epicenter. One-sample-per-second (1-sps) GPS data were collected for a five-day period around the event (day of event plus two days before and after).

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Join UNAVCO at GSA

Join UNAVCO at GSA

October 8, 2014

Visit our booth, see a TLS demo, take a short course, attend an event, and keep up with UNAVCO work through our staff presentations.

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RESESS Summer 2014 Wrap-up

RESESS Summer 2014 Wrap-up

September 30, 2014

The 2014 cohort of RESESS interns has departed Boulder after successfully completing their research internship summer. Ten interns from ten different institutions across the country participated in a summer full of research, writing, and communications training. Five of the interns were returning for their second year with RESESS and five of the interns participated for the first time.

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Data Event Response to the 25 September 2014 Mw 6.2 Earthquake 94km WNW of Willow, Alaska

Data Event Response to the 25 September 2014 Mw 6.2 Earthquake 94km WNW of Willow, Alaska

September 29, 2014

In response to the 25 September 2014 Mw 6.2 Willow, Alaska earthquake, UNAVCO is downloading one-sample-per-second (1-sps or 1 Hz) data from GPS stations within an approximately 100 km radius of the epicenter, as well as from stations near Anchorage, where shaking was felt. These data will be downloaded for the full 24 hour UTC day of the event.

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SCIENCE SNAPSHOTS

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Plate Boundary Observatory as a Hydrological Network to Monitor Drought

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.

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Rifting in Eastern Africa: Geodetic Data Deciphers Spreading Forces

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.

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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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Unrecognized Rapid Ice Loss in Northeast Greenland Due to Warming

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.

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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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Estimating plate boundary slip during large earthquakes: seafloor geodesy during 2011 Tohoku-oki Earthquake in Japan

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.

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Quality Assessment: A new technique to assess and monitor long-term quality of GPS data

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.

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Last modified: Wednesday, 29-Oct-2014 22:48:39 UTC

 

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