New Google effort uses cellphones to detect earthquakes

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Your cellphone can be used to text, talk, shop, work, play games, navigate roads, trade stocks. But what about providing early warnings for earthquakes? Google is intent on finding out. ScienceMagArchives

that users of its Android phones in New Zealand and Greece will receive warnings of damaging earthquakes about to strike their locations. And those earthquakes will be detected not by the usual seismometers, but by the phones themselves.

An earthquake warning system that can forgo this expense and rely instead on smartphones has tremendous potential globally, says Men-Andrin Meier, a seismologist who studies earthquake warning systems at ETH Zurich."If you can do it with just the phones, via Google, that's an enormous shortcut." When a phone detects an earthquake signal, it sends word, along with a rough location, to a central server. And whereas a traditional earthquake warning system only needs four seismic stations to detect a quake, more than 100 phones need to sound the alarm before Google believes it.

 

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