Fault segmentation and properties modeled from paleoseismic
data
Abstract
Geomorphic offsets from the 1857 earthquake along the Cholame and Carrizo
segments of the San Andreas Fault have been shown to increase by several
meters in the Carrizo segment. Modeling of the fault surface can begin to
unravel the effects of fault depth, fault strength and prior loading on
the surface displacements. The increased fault depth of the Carrizo segment
is well-documented. Although the loading history is not well known,
boundaries can be placed in order to infer relative fault strength of the
Cholame to the Carrizo. Preliminary modeling suggests that the strength
ratio of the Cholame segment to the Carrizo is between 2/3 and 1/3. This
fault property is an important predictor for earthquake recurrence and hazard.
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Links for a quick look through the figures...
Figure 1
Figure 2 & 3
Figure 4