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Archive Home > 2009 > July > 10 > Jump in tremors could be a signal for a large quake

Jump in tremors could be a signal for a large quake

By Lisa M. Krieger / The Bulletin
July 10, 2009

Scientists have detected an increase in mysterious underground tremors along a stretch of the San Andreas fault, signaling stress that could boost the likelihood of a major earthquake.

Seismic tools buried in deep holes near the town of Parkfield, Calif., 175 miles south of San Jose, have found....

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