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August 30, 2014

Earthquake rupture through a U.S. suburb

In the quiet wee hours of a NorCal summer night, the ground lurched beneath the mud of the northern San Francisco Bay and sent seismic waves roaring upward and outward into the world-famous wine valley’s central city, Napa, CA. After they wreaked their havoc in Napa and nearby communities the seismic waves spread farther afield and gently rumbled most of the Bay Area and its exurbs from our weekend slumber. By the time …

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January 11, 2014

New map of Hollywood fault released

Amid an atmosphere of contention and high stakes, the California Geological Survey this week released a preliminary official map of the Hollywood Fault, one of the most threatening urban earthquake faults in the U.S. The map ( available in PDF format here ) delineates the best estimate surface trace of the Hollywood fault, which forms the southern boundary of the Santa Monica Mountains in urban Los Angeles. It also defines a “special …

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