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بوابة الفجر
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Why did millions of Egyptians get an earthquake warning
Earthquake alert system on Android phones, developed by Google, uses motion sensors to detect primary (P) waves, which are faster, before the arrival of the stronger secondary (S) waves. It quickly analyzes the data to send warnings before residents feel the main tremors. In the early hours of today, millions of Egyptians received alerts before experiencing the earthquake, which measured approximately 5.7 magnitude, thanks to this system that relies on location and internet services. This system serves as an additional early warning method and does not replace official earthquake monitoring networks. It encourages immediate safety actions upon receiving the alert, such as moving away from windows and taking cover under a table. It appears that the widespread notifications in Egypt are related to the strength and proximity of the quake to densely populated areas, leading to a broad deployment of warnings for the first time.
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