By: Richard A. Lovett
Published: April 20, 2012
NASA and a group of universities known as the READI network have begun testing an earthquake-warning system based on satellite data from the Global Positioning System (GPS). The method could have allowed Japanese officials to issue accurate warnings of the deadly March 2011 earthquake and tsunami ten times faster than they did, say scientists.
The system is currently being tested using the US Pacific Northwest Geodetic Array: hundreds of GPS receivers placed along the North American coast between Northern California and British Columbia in Canada. The sensors provide real-time measurements of ground movement caused by nearby and offshore seismic faults. (READ MORE…)