资源说明：Every year thousands of people die because an earthquake catches them in a dangerous place or during a defenceless sleep.Here’s a GSM-based seismic alert system that could warn before an earthquake strikes. Earthqakes strike without warning.The resulting damage can be minimized and lives can be saved if the people living in the earthquake-pronearea are already prepared to survive the strike.This requires a warning before the strong ground motion from the earthquake arrives.Such a warning system is possible because the energy wave released at the epicenter of the earth quake travels slower than light.

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