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CA: Risk of big earthquake on San Andreas fault rises after quake swarm at Salton Sea

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  • CA: Risk of big earthquake on San Andreas fault rises after quake swarm at Salton Sea

    Source: http://www.latimes.com/local/lanow/l...nap-story.html


    Risk of big earthquake on San Andreas fault rises after quake swarm at Salton Sea
    Rong-Gong Lin II
    SEPTEMBER 30, 2106, 7:15 AM

    The rumbling started Monday morning deep under the Salton Sea. A rapid succession of small earthquakes ? three measuring above magnitude 4.0 ? began rupturing near Bombay Beach, continuing for more than 24 hours. Before the swarm started to fade, more than 200 earthquakes had been recorded.

    The temblors were not felt over a very large area, but they have garnered intense interest ? and concern ? among seismologists. It marked only the third time since earthquake sensors were installed there in 1932 that the area had seen such a swarm, and this one had more earthquakes than the events of 2001 and 2009.

    The quakes occurred in one of California?s most seismically complex areas. They hit in a seismic zone just south of where the mighty San Andreas fault ends. It is composed of a web of faults that scientists fear could one day wake up the nearby San Andreas from its long slumber...

  • #2
    Quake alert issued for Southern California

    Sept. 30, 2016 Updated Oct. 2, 2016 7:38 a.m.
    BY LAUREN WILLIAMS / STAFF WRITER

    Southern California cities should remain on heightened alert into early next week for the increased possibility of a powerful earthquake following a swarm of temblors near the Salton Sea, officials announced.

    Such warnings are uncommon ? typically issued once or twice a year, said Kelly Huston, the deputy director of crisis communications for the Governor?s Office of Emergency Services. Given the swarm?s location near the San Andreas fault, the Governor?s Office of Emergency Services issued the warning this week.

    The Salton Sea is located on the 800-mile-long San Andreas, the state?s fastest moving fault. It experienced 142 temblors starting Monday. Those quakes ranged in strength from a magnitude of 1.4 to 4.3 near Bombay Beach at the southern end of the fault, according to the U.S. Geological Survey.
    ...
    http://www.ocregister.com/articles/e...emergency.html
    "Safety and security don't just happen, they are the result of collective consensus and public investment. We owe our children, the most vulnerable citizens in our society, a life free of violence and fear."
    -Nelson Mandela

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