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- 2019 GPS Week Rollover and Trimble Receivers
- 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: Mapping with Unmanned Aircraft Systems
- Video: 9 Impacts of Geodesy
- Video: What is UNAVCO?
HIGHLIGHTS
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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.
CHORDS Provides Next Generation Infrastructure for Real-time Geoscience Data Services
March 8, 2019
The EarthCube Cloud-Hosted Real-time Data Services for the Geosciences (CHORDS) project aims to simplify access to real-time geoscience data. Through CHORDS portals, scientists can visualize data streams: (1) in samples/min/hour/day, (2) as simple time-series, and (3) via the time-series visualization software Grafana for real-time time-series analysis.
Incorporating Real-Time GNSS Data into the ShakeAlert Earthquake Early Warning System
March 8, 2019
UNAVCO is actively participating in the testing and implementation of the ShakeAlert Earthquake Early Warning (EEW) system for the United States west coast that is operated by the US Geological Survey.
Accessible Earth: Innovative Field Course Increases Options and Accessibility to Geoscience
February 28, 2019
Current trends in US demographics, rising costs of higher education, and hurdles to entry and retention of first-generation students seriously threaten our ability to mitigate future workforce shortages across STEM fields, with geosciences among the least diverse and most at risk. At the same time, it is widely recognized that the geoscience curriculum must be modernized to better prepare the next generation to utilize geoscience data streams to maximally benefit society and ensure a sustainable future.
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.
Looking for Dark Matter Passing Through the GPS Constellation
November 21, 2017
The Global Positioning System (GPS) constellation can be used to detect dark matter. Sixteen years of ground-based GPS receiver observations were utilized to look for dark matter passing near Earth. Although no dark matter was detected, the results refine the properties of the universe, the accuracies of atomic clocks and future searches for dark matter.
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.
Integrating Geodetic Data For Earthquake Warnings in the Western U.S.
January 03, 2019
Real-time Global Navigation Satellite System (GNSS) ground-based sites can measure displacements on the Earth’s surface. Here, the benefits of including GNSS in an earthquake early warning system are outlined and three different algorithms for integrating geodetic data into the USGS’s ShakeAlert system are identified.
Last modified: Tuesday, 19-Mar-2019 16:41:51 UTC
2019