For the 3D waveform modeling, we used the elastic finite-difference code, E3D developed by Larsen and Schultz (1995). With the BSL cluster we can simulate ground motions throughout the greater San Francisco Bay Region to a maximum frequency of 0.5 Hz for models with a minimum wave speed of 500m/s. We have performed simulations of 9 Mw4.1-5.0 events using source parameters obtained from the BSL Moment Tensor Catalog (Figure 2.18:Table 1). Broadband seismic data was obtained form the Berkeley Digital Seismic Network (BDSN), and strong motion data was obtained from the USGS strong Motion Instrumentation Program (SMIP) and the California Geologic Survey (CGS) California Strong Motion Instrumentation Program (CMSIP). The data was corrected to absolute ground velocity (cm/s). We compare synthetic and observed ground velocity in three passbands, namely 0.03-0.15Hz, 0.1-0.25Hz, and 0.1-0.5Hz.
Berkeley Seismological Laboratory
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