Our discovery of NVTs beneath Cholame, CA is important for three reasons: 1) they occur along a transform rather than a subduction plate boundary zone, 2) no obvious source for fluid re-charge exists in the Cholame area to aid in tremor genesis, and 3) the highest level of tremor activity in the region occurs beneath the inferred epicentral region of the moment magnitude (M) 1857 Fort Tejon earthquake, whose rupture zone is currently locked.
Berkeley Seismological Laboratory
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