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How Android Users Get Earthquake Alerts
A study by Remote Sensing Professor Hisham Al-Askari explains that the Android Earthquake Alerts System used on Android phones allows users to receive alerts before feeling the earthquake shakings. This is achieved by turning millions of phones into a network for earthquake monitoring, relying on motion and acceleration sensors. The system works by detecting primary seismic waves (P-Waves) that travel at high speed, with data processed quickly through Google servers to determine the earthquake’s location and strength. Then, alerts are sent to regions expected to be reached by the secondary waves (S-Waves). The system does not predict earthquakes before they happen, but it provides a few seconds of warning before the more destructive vibrations arrive.
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