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Mobile Earthquake Alerts Overview
The article explains the earthquake warning system via mobile phones, which relies on the Android Earthquake Alerts System that began operating in 2020. The system uses the accelerometer in Android phones to detect the primary waves of an earthquake (P-Wave) that arrive before the destructive secondary waves (S-Wave), allowing alerts to be sent before strong tremors reach the area. Data from millions of phones is collected through Google's earthquake monitoring network, enabling warnings to be issued seconds before the shaking occurs, depending on the distance between the earthquake's epicenter and the user. Users can enable notifications through their phone settings. The system is highly valuable in saving lives by providing an opportunity to prepare before the severe shaking begins.
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