Part of this work was supported by the USGS grants 99HQGR0057 and 00HQGR0048. The Hellman
Faculty Fund is acknowledged for partial support.
(a) Location of the SCV seismic array. Contours of the basins from the USGS model at
1km, 3 km, 5 km, and 6 km depth are shown in gray. Focal mechanism for the San Juan Bautista
5.4 event is shown. (b) Locations of the teleseismic events used in the study.
Correlations between different relative measures of ground motion parameters and USGS
model basin depth. (a) Travel-time residuals, (b) relative amplitudes, and (c) average P-wave energy
averaged over the teleseismic events shown in Figure 13.15b as a function of the USGS model
basin depth. (d) Integrated squared vertical velocity and (e) vertical PGV measured for the San
Juan Bautista event as a function of the USGS model basin depth. (f) Period of the microseisms
H/V peak as a function of the USGS model basin depth.
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