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Laterally propagating slow slip events in a rate and state friction model with a velocity-weakening to velocity-strengthening transition

Author(s): Hawthorne, Jessica C; Rubin, Allan M

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Abstract: [1] We investigate the behavior of simulated slow slip events using a rate and state friction model that is steady state velocity weakening at low slip speeds but velocity strengthening at high slip speeds. Our simulations are on a one‐dimensional (line) fault, but we modify the elastic interactions to mimic the elongate geometry frequently observed in slow slip events. Simulations exhibit a number of small events as well as periodic large events. The large events propagate approximately steadily “along strike,” and stress and slip rate decay gradually behind the propagating front. Their recurrence intervals can be determined by considering what is essentially an energy balance requirement for long‐distance propagation. It is possible to choose the model parameters such that the simulated events have the stress drops, slip velocities, and propagation rates observed in Cascadia.
Publication Date: Jul-2013
Electronic Publication Date: 24-Jul-2013
Citation: Hawthorne, Jessica C., and Allan M. Rubin. "Laterally propagating slow slip events in a rate and state friction model with a velocity‐weakening to velocity‐strengthening transition." Journal of Geophysical Research: Solid Earth 118, no. 7 (2013): 3785-3808. doi: 10.1002/jgrb.50261.
DOI: doi:10.1002/jgrb.50261
ISSN: 2169-9313
EISSN: 2169-9356
Pages: 3785 - 3808
Type of Material: Journal Article
Journal/Proceeding Title: Journal of Geophysical Research: Solid Earth
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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