GPS for Tsunami Warnings

Wired News has an interesting article about the use of GPS as an aid in tsunami warnings. Researchers have suggested at least 2 ways in which GPS might give warning information: 1) GPS receivers can measure ground movement in real time, and they could also be used to measure tsunami-associated pressure waves in the Earth’s atmosphere. Either method, when combined with seismic-based warning systems, could help cut down the time before a warning can be issued and increase time for evacuation.

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