Afterslip for 2014 South Napa Earthquake (IMAGE)

Seismological Society of America

Afterslip for 2014 South Napa Earthquake

Caption

These two photos showing evidence of afterslip were taken where the West Napa fault crosses Highway 12 at Cuttings Wharf Road. The first offset measurement was taken the day of the earthquake -- about 6 cm (2 in) of right-lateral offset. The following day (almost 24 hrs later), the same feature had 11 cm (4 in) of offset.

Credit

USGS/ (Photos courtesy of Tim Dawson, California Geological Survey)

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