UNAVCO Logo
 
Home banner image
 

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.

 

Transforming understanding of Earth systems and hazards using geodesy.

 
 

HIGHLIGHTS

view all
 
Data Event Response to the December 8, 2016 M6.5 Earthquake 160km W of Ferndale, California

Data Event Response to the December 8, 2016 M6.5 Earthquake 160km W of Ferndale, California

December 8, 2016

In response to the M6.5 earthquake 160km west of Ferndale, California on 2016-12-08 at 14:49:46 UTC, UNAVCO is downloading high rate GPS/GNSS data from 214 PBO stations within 500 km of the epicenter.

read more

Terrestrial Laser Scanning and Structure from Motion Learning Resources for Students, Instructors, and Researchers

Terrestrial Laser Scanning and Structure from Motion Learning Resources for Students, Instructors, and Researchers

December 9, 2016

Structure from motion (SfM) photogrammetry and terrestrial laser scanning (TLS) are two valuable geodetic methods for obtaining high resolution topographic data for a wide range of applications from hazards assessments to quantifying geomorphic processes. However, sometimes the knowledge needed to implement the technologies can be a barrier. Now an undergraduate teaching module is available online.

read more

Join UNAVCO at AGU 2016

Join UNAVCO at AGU 2016

November 29, 2016

Come find us at Booth #523! Our booth is staffed by UNAVCO employees from all groups within the organization, as well as by 2016 UNAVCO interns.

read more

GPS observations of post-seismic deformation from the 3 Sep 2016, Mw 5.8, Pawnee, Oklahoma, earthquake

GPS observations of post-seismic deformation from the 3 Sep 2016, Mw 5.8, Pawnee, Oklahoma, earthquake

November 22, 2016

This project came about quickly after the 3 September 2016, Mw 5.8, Pawnee, Oklahoma, earthquake. It is collaboration between the University of Memphis, University of Oklahoma (OU), and Oklahoma Geological Survey (OGS). The project deployed eight GPS stations around the causative Sooner Lake fault, in order to measure the years-long relaxation of the crust (postseismic deformation) after the September earthquake.

read more

SCIENCE SNAPSHOTS

view all
 
Probabilities of Large Earthquakes in Alaska

Probabilities of Large Earthquakes in Alaska

August 11, 2016

Estimates of the probabilities of a magnitude greater than 9.0 earthquake for the Aleutian Islands are about 6.5 to 12 percent over the next 50 years. Such an event poses obvious earthquake and tsunami risks for Alaska and tsunami risks for western North America and Hawaii.

read more

Complex Slip Triggered by Complex Geology for 2014 South Napa Earthquake

Complex Slip Triggered by Complex Geology for 2014 South Napa Earthquake

December 7, 2016

Using GPS and Sentinel 1 radar imagery, the slip along the West Napa fault zone (WNFZ) during and after the 2014 South Napa earthquake was measured. The complexity of the slip and afterslip suggests that hard rock and soft sediment heterogeneity control the style of friction on the fault plane.

read more

GPS Tracks Atmospheric Water Vapor That Fuels Storms

GPS Tracks Atmospheric Water Vapor That Fuels Storms

November 21, 2016

A network of GPS stations measures atmospheric water vapor over the continental United States with effective spatial and temporal resolution. The data tracks annual and seasonal moisture transport from the Gulf of Mexico into the Great Plains and the moisture variability related to the North American monsoon. These measurements are valuable for severe weather forecasts.

read more

GPS Measurements of Bedrock Uplift in Greenland Improve Ice Loss Estimates

GPS Measurements of Bedrock Uplift in Greenland Improve Ice Loss Estimates

October 28, 2016

Global Positioning System (GPS) measurements of the uplift of the ground surface beneath the Greenland ice sheet is critical to determining the amount of ice mass that has been lost since the Last Glacial Maximum (LGM). The GPS data show larger uplift rates than previously recognized and suggest that satellite studies have underestimated the ice mass loss by about 20 gigatons per year or about 1.5 meters of sea level rise since the LGM.

read more

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.

read more

Subsiding Atlantic Coast Due to Geologic Adjustment and Groundwater Extraction

Subsiding Atlantic Coast Due to Geologic Adjustment and Groundwater Extraction

November 28, 2016

Long-term records from GPS stations along the Atlantic Coast of North America show long term subsidence due to geologic adjustments and short term subsidence due to human-related groundwater extraction. These measurements are critical for understanding water use, sediment structure and sea level rise. In particular, knowing the rate of subsidence or uplift along this populated coastal plain could help mitigate flooding and inform land use.

read more

Improving Local Tsunami Warnings by Combining Geodetic and Seismic Observations

Improving Local Tsunami Warnings by Combining Geodetic and Seismic Observations

November 29, 2016

Combining geodetic and seismic observations can reduce the amount of time needed to assess the tsunami intensity generated by a large magnitude thrust fault earthquake along a subduction zone. Through retrospective analysis of four tsunamigenic large earthquakes in Japan and Chile, the tsunami potential at the local coast was estimated within less than 2 minutes.

read more

Last modified: Thursday, 08-Dec-2016 19:45:33 UTC

 

Sponsored by

National Science Foundation Logo National Aeronautics and Space Administration Logo