Interseismic strain accumulation and the earthquake potential on the southern San Andreas fault system

Yuri Fialko ()
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Yuri Fialko: University of California

Nature, 2006, vol. 441, issue 7096, 968-971

Abstract: San Andreas fault is stressed The southern section of the San Andreas fault is the only part of the fault that hasn't ruptured in historic times. For this reason it is believed to pose the largest seismic risk in California, although whether tectonic stress is actually accumulating there is a topic of heated debate. Using data from radar interferometry satellites, Yuri Fialko has produced a detailed map of surface deformation in the area that shows that elastic stress is accumulating at a fairly high rate: during the past 300 years, a displacement of 6 to 9 metres has built up. This suggests that the southern San Andreas fault is nearing the end of the interseismic phase of the earthquake cycle, and that increased seismic activity of some kind can be expected.

Date: 2006
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DOI: 10.1038/nature04797

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