Los Angeles area quake hazards studied

Aug. 24, 2005 at 11:24 AM
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LOS ANGELES, Aug. 24 (UPI) -- Two University of Massachusetts researchers are warning the seismic hazard along some faults in the Los Angeles Basic might be underestimated.

Professor Michele Cooke and graduate student W. Ashley Griffith said they analyzed computer models compiled by the Southern California Earthquake Center of movement in the Southern California landmass and compared them with theories about what the Earth's movement does to seismic faults under Los Angeles.

"We know the San Andreas (fault) produces earthquakes," Cooke told the Los Angeles Daily News. "We need to see what's going on in the Los Angeles Basin, so we can see what the hazards are."

Cooke said the San Gabriel, Hollywood, Raymond, Peralta Hills and Chino faults might be moving at up to 1 millimeter a year according to the computer model that best fits the geologic measurements.

"There are a whole lot of faults for which we don't have all the measurements," Cooke said.

The study appears in the August issue of the Bulletin of the Seismological Society of America.

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