NASA Tests GPS Monitoring System for Large US Earthquakes25/04/2012
|The GPS will undergo a major test of its ability to rapidly pinpoint the location and magnitude of strong earthquakes across the western United States. Results from the new Real-time Earthquake Analysis for Disaster (READI) Mitigation Network soon could be used to assist prompt disaster response and provide more accurate tsunami warnings.|
The new research network builds on decades of technology development supported by the National Science Foundation, the Department of Defense, NASA, and the U.S. Geological Survey (USGS). The network uses real-time GPS measurements from nearly 500 stations throughout California, Oregon and Washington. When a large earthquake is detected, GPS data are used to automatically calculate its vital characteristics including location, magnitude and details about the fault rupture.
Craig Dobson, natural hazards programme manager in the Earth Science Division at NASA Headquarters in Washington said that READI is enabling continued development of real-time GPS technologies to advance national and international early warning disaster systems. He sees this prototype system as a significant step towards realising the goal of providing Pacific basin-wide natural hazards capability around the Pacific 'Ring of Fire.’
Accurate and rapid identification of earthquakes of magnitude 6.0 and stronger is critical for disaster response and mitigation efforts, especially for tsunamis. Calculating the strength of a tsunami requires detailed knowledge of the size of the earthquake and associated ground movements. Acquiring this type of data for very large earthquakes is a challenge for traditional seismological instruments that measure ground shaking.
High-precision, second-by-second measurements of ground displacements using GPS have been shown to reduce the time needed to characterise large earthquakes and to increase the accuracy of subsequent tsunami predictions. After the capabilities of the network have been fully demonstrated, it is intended to be used by appropriate natural hazard monitoring agencies. USGS and the National Oceanic and Atmospheric Administration are responsible for detecting and issuing warnings on earthquakes and tsunamis, respectively.
The READI network is a collaboration of many institutions including Scripps at the University of California in San Diego; Central Washington University in Ellensburg; the University of Nevada in Reno; California Institute of Technology/Jet Propulsion Laboratory (JPL) in Pasadena; UNAVCO in Boulder, Colo.; and the University of California at Berkeley.
NASA, NSF, USGS, and other federal, state, and local partners support the GPS stations in the network, including the EarthScope Plate Boundary Observatory, the Pacific Northwest Geodetic Array, the Bay Area Regional Deformation Array and the California Real-Time Network.
The READI network is the outgrowth of nearly 25 years of U.S. government research efforts to develop the capabilities and applications of GPS technology. The GPS satellite system was created by the Department of Defense for military and ultimately civil positioning needs. NASA leveraged this investment by supporting development of a global GPS signal receiving network to improve the accuracy and utility of GPS positioning information. Today that capability provides real-time, pinpoint positioning and timing for a wide variety of uses from agriculture to Earth exploration.
The GPS earthquake detection capability was first demonstrated by NASA-supported research on a major 2004 Sumatra quake conducted by Geoffrey Blewitt and colleagues at the University of Nevada in Reno.
Read more about: GPS satellite
More news from this supplier:
First NASA Antarctic Airborne Campaign from McMurdo Station
Giant Canyon Revealed under Greenland Ice Sheet
Change of Base for Operation IceBridge Antarctic Campaign
NASA Flies Dragon Eye UAV into Volcanic Plume
First LDCM Satellite Images Released
Longest Permanent Earth Surface Data Record Continues
Snow Covers Chinese Desert
Space-based Instrument to Track Air Pollution
Portrait of Global Aerosols
NASA Appoints Ocean Colour Services Contractor
Lidar Flight Planning System with Minimal User Intervention
Intergeo 2014 Draws Geomatics Industry to Berlin
Topcon DS-200 Robotic Upgrade to Total Station Series
GEO Business 2014 Launches Inaugural Conference Programme
Image Sensors Bring Computer Vision to Google's Project Tango
Topcon Technology Roadshow Travels Through North America
Conference on Technologies for Open Pit Mines Survey
Debut for GPS-less UAV Lidar Surveying and Mapping System
The National Map and National Atlas to Merge
Schiebel UAS Supports Winter Paralympics in Sochi
comments powered by Disqus
3D model of a real forest from airborne Lidar
The terrain was prepared from aerial ortho-image of 30 cm resolution. Lidar derived Canopy Height Model was worked at 15 cm resolution. For keeping the uniformity with Lidar derived layers, the ortho-image was used at 15 cm pixel size.