California fault capable of 8.0-magnitude earthquake shows unprecedented recent movement, study
California fault capable of 8.0-magnitude earthquake shows unprecedented recent movement, study finds
LOS ANGELES >> A major California fault capable of producing a magnitude 8 earthquake has begun moving for the first time on record, a result of this years Ridgecrest earthquake sequence destabilizing nearby faults, Caltech scientists say in a study released in the journal Science today.
In the modern historical record, the 160-mile-long Garlock fault on the northern edge of the Mojave Desert has never been observed to produce either a strong earthquake or even to creep the slow movement between earthquakes that causes a visible scar on the ground surface.
But new satellite radar images now show that the fault has started to move, causing a bulging of land that can be viewed from space.
This is surprising, because weve never seen the Garlock fault do anything. Here, all of a sudden, it changed its behavior, said the lead author of the study, Zachary Ross, assistant professor of geophysics at Caltech. We dont know what it means.
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(Honolulu Star Advertiser)