Laterally propagating slow slip events in a rate and state friction model with a velocity-weakening to velocity-strengthening transition
- Creators
- Hawthorne, J. C.
- Rubin, A. M.
Abstract
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.
Additional Information
© 2013 American Geophysical Union. Received 21 August 2012; revised 31 May 2013; accepted 20 June 2013; published 24 July 2013. We thank two anonymous reviewers and the associate editor for comments on the manuscript. This research was supported by NSF grant EAR-0911378. J.C.H. was also supported by a Charlotte Elizabeth Procter Fellowship from Princeton University.Attached Files
Published - jgrb50261.pdf
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Additional details
- Eprint ID
- 42216
- Resolver ID
- CaltechAUTHORS:20131104-102811460
- EAR-0911378
- NSF
- Princeton University Charlotte Elizabeth Procter Fellowship
- Created
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2013-11-04Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field