NEAR-SURFACE SEISMIC SURVEYING ALONG THE GREEN VALLEY FAULT, SAN FRANCISCO BAY AREA, CALIFORNIA

摘要

Seismic reflection surveying was conducted at the Green Valley fault, located in the San Francisco Bay Area, California, with the goal of identifying subsurface stream channels for use in measuring fault offset and slip rate. Three 180-m long, fault-parallel profiles were recorded in 2009 near the site of previous paleoseismologic investigations, including near-surface geophysical surveys. A previous seismic refraction survey identified a trough-shaped, low velocity body on the east side of the fault at depths of 5-12 m, interpreted as a stream channel truncated by the Green Valley fault. The present work