Asymmetric off-fault damage generated by bilateral ruptures along a bimaterial interface

Details Asymmetric off-fault damage generated by bilateral ruptures along a bimaterial interface Asymmetric off-fault damage generated by bilateral ruptures along a bimaterial interface

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3514306d&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 14, CiteID L14306

Physics

8

Seismology: Earthquake Dynamics (1242), Seismology: Earthquake Ground Motions And Engineering Seismology, Seismology: Surface Waves And Free Oscillations

Scientific paper

We perform numerical simulations of spontaneous dynamic rupture governed by a slip-weakening law along a bimaterial interface (fault) with off-fault damage in the form of Coulomb plastic yielding. Off-fault plastic yielding stabilizes the wrinkle-like slip pulse in terms of a decreasing rate of slip velocity growth. With a variety of model parameters, ruptures on the fault are bilateral, while off-fault plastic strain distribution between the two rupture directions is highly asymmetric.

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