19 years, 3 months ago

GPS Could Speed Tsunami Warnings

GPS satellite receivers are already navigational must-haves for hikers and drivers. International organizations like the Pacific Tsunami Warning Center, or PTWC, in Hawaii currently depend on coastal seismic stations to record deep-sea earthquakes that could cause giant waves. But according to Jeff Freymueller, a geophysicist at the University of Alaska Fairbanks, data from GPS receivers could provide quicker, more accurate estimates of the magnitude of a tsunami-causing quake, buying time for evacuation. "GPS receivers measure the static displacement of the earth, and after the first few minutes of a quake, that doesn't change much." Seismic measurements of very large quakes like the one that caused last year's Indian Ocean tsunami take several hours to fine-tune, because the moving vibrations must be recorded at a variety of stations in different locations.

Wired
Measure Gps Quake Tsunami Receivers Gps Receivers Freymueller
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NASA's GUARDIAN can detect tsunami from far reaches of atmosphere. Check how

Hindustan Times
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Tsunami warning system: India to do 3D mapping of coast
10 years, 3 months ago

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