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    2019 Ridgecrest earthquakes - Wikipedia

    Earthquakes

    At 10:02 a.m. PDT (17:02 UTC) on July 4, 2019, a 4.0 Mw  foreshock occurred about 6.8 mi (10.9 km) southwest of
    At … 展开

    Impact

    Structural damage and two building fires—one of which destroyed half of a home—occurred in Ridgecrest. One mobile home was knocked off its foundation and deemed uninhabitable. Around 20 injuries were reported, p… 展开

    日期2019年7月6日
    震级MW 7.1（USGS）
    震源深度8.0千米（USGS）
    影响地区美国
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    Aftermath

    Hours after the Mw  6.4 foreshock, California Governor Gavin Newsom approved an emergency proclamation for Kern County. Local emergency responders such as the Los Angeles Police Department used social media to alert th… 展开

    Earthquake early warning

    Many residents of Los Angeles County were not pleased when an earthquake early warning mobile app, ShakeAlertLA, did not alert them to either of the Ridgecrest earthquakes, which many people assumed to be a failure. T… 展开

    Tectonic setting

    The broad context of the Ridgecrest earthquakes is the Eastern California Shear Zone (ECSZ), a seismically active region east of the southern segment of the San Andreas Fault (SAF) and largely coincident with the … 展开

    Historical seismicity

    A large portion of the slippage between the Pacific and North American plates is accommodated in the Eastern California Shear Zone (ECSZ), resulting in many large earthquakes even within the limited span of the histo… 展开

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