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.
WHAT'S HOT
view all- Critical Information regarding preparations for the GPS Week Rollover on April 6, 2019
- Now online: Where is This Chunk of Earth Moving? article
- UNAVCO GAGE Analysis Transition to IGS14 System
- New release of teqc available (version 2019 Feb 25)
- Models ITRF2014, GSRM v2.1, ITRF2008, and NNR-MORVEL56 are now in our Plate Motion Calculator
- Video: 9 Impacts of Geodesy
- 2016-2020 UNAVCO Strategic Plan
- Video: What is UNAVCO?
HIGHLIGHTS
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The Next Generation GPS/GNSS Network: The Network of the Americas (NOTA)
April 16, 2019
The newly designated Network of the Americas (NOTA) incorporates three major networks: the EarthScope Plate Boundary Observatory (PBO), 1,100 stations spanning Alaska, the continental US, and Puerto Rico; TLALOCNet, 40 stations in Mexico; and COCONet, 85 stations spanning the Caribbean.
Subduction Below Extreme Sedimentation, Part 2 - Myanmar
April 12, 2019
Continuing previous work in Bangladesh, Michael Steckler (LDEO) and Keith Williams (UNAVCO) arrived back in Myanmar in late October of 2018 to begin the installation of five additional cGPS sites with collaborators. The larger project entails installation of a transect of cGPS stations and seismometers spanning Bangladesh, India, and Myanmar.
Join UNAVCO at SSA
April 3, 2019
Come find us at the 2019 annual meeting of the Seismological Society of America in Seattle in the exhibitor area to learn about high-rate and real-time geodetic data, student opportunities, and more. Our booth is staffed by UNAVCO personnel from all groups within the organization.
Updates on a Polar Network: ANET in the 2018-19 Season
March 11, 2019
POLENET, a multiyear NSF-funded project, has entered its third award phase. The team for the 2018-19 Antarctic season, composed of six people, left McMurdo station for the remote field camp of WAIS Divide on December 13th, 2018. During the six-week deployment, the team installed five new GPS stations on the coast of Marie Byrd Land.
SCIENCE SNAPSHOTS
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Probabilities of Large Earthquakes in Alaska
February 28, 2018
A crustal deformation model for the Western United States fits geodetic and geologic observations and shows where major changes in the crust are occurring. Such modeling is critical for earthquake hazard assessments and for understanding Earth processes.
Stable North American Plate Bending and Moving After Ice Loss According to GPS
September 17, 2018
Analysis of thousands of GPS observations over decades shows the upward bending of the stable North American plate due to ice loss and horizontal contraction, mostly due to higher than expected inward velocities around the edges of the former ice sheets.
Tracking Interactions of the Sun, the Moon and Earth with GNSS for the 2017 Great American Solar Eclipse
March 03, 2019
he 21 August 2017 total solar eclipse across the United States blocked solar radiation and influenced the ionosphere and the rest of the atmosphere. The total electron content (TEC) in the ionosphere was measured with UNAVCO’s network of U.S. Global Positioning System (GPS)/ Global Navigation Satellite System (GNSS) ground-based sites and other geodetic sites across the country.
Measuring Permafrost on the North Slope of Alaska with GNSS
January 18, 2019
The freeze-thaw dynamics of permafrost on the north slope of Alaska was measured over 12 years using a Global Navigation Satellite System (GNSS) site permanently embedded in the permafrost near Barrow, Alaska. The data reveal subsidence due to thawing each summer plus interannual variations. The technique provides a new spatial and temporal approach to quantify permafrost changes and it can be applied at more than 200 GNSS sites in cold regions.
How Flood and Fire Alter Landscape, Seen Through the Discerning Eye of Ground-based LIDAR
February 7, 2019
A colluvial hollow in Fourmile Canyon, Colorado that was present after the 2010 Fourmile Canyon wildfire transitioned to a fluvial channel with steps and pools while retaining the original hollow roughness after an intense 2013 flood. The changes were measured with a terrestrial laser scanner from UNAVCO and can help understand future risks in a changing landscape.
Tsunami Hazards in Central America
November 8, 2017
Central America faces tsunami threats along the Pacific and Caribbean coasts and at the shores of large lakes. Large earthquakes caused the most damaging tsunamis, however, landslides or volcanic eruptions can cause tsunamis around large lakes. Warning systems rely on seismic and geodetic observations. The Central American Tsunami Advisory Center (CATAC) will use these observations to help reduce losses.
Chile Advances Earthquake and Tsunami Warning System with GNSS Data
April 08, 2019
Global Navigation Satellite Systems (GNSS) networks have been established and enhanced to provide information and warning about large earthquakes and tsunamis. The Centro Sismológico Nacional (CSN) of the Universidad de Chile can collect information about an earthquake and potential tsunami from GNSS data within seconds and provide early warning to communities in Chile and the rest of the world.
Last modified: Tuesday, 16-Apr-2019 16:48:28 UTC
2019