Proposed Components for CA for Feb. 2007 Version of National Maps. Because of issues with inversion for A faults : Use WG02 for northern CA A-faults Use Biasi and Weldon for southern San Andreas (slip rates OK?); a key issue here
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Because of issues with inversion for A faults:
Use WG02 for northern CA A-faults
Use Biasi and Weldon for southern San Andreas (slip rates OK?); a key issue here
Use WG06 a priori geologic insight model for multisegment ruptures on San Jacinto, Elsinore, and Garlock faults (adjusted to get observed slip rates)
Use B faults from WG06; link up some B faults as suggested
No new C zones (some of them seem to be problematic: some very narrow zones with a lot of slip; how many M6.5’s?)
Remove about 10% moment from A and B faults to account for afterslip, aftershocks, coupling, etc.
Use new Felzer catalog (aftershocks/foreshocks removed) to make background seismicity grid; use corrections for mag. uncert. and rounding; use b-value of 0.8
Adjust rate of M ≥ 6.5 events from background to fit rate of observed events not on A or B faults (or could determine new b-value above M≥5.0)
Remove Mendocino fault; treat with anisotropic smoothed seismicity