Rupture propagation, dynamical front selection, and the role of small length scales in a model of an earthquake fault
Journal Article
·
· Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States)
- Institute for Theoretical Physics, University of California, Santa Barbara, California 93106-4030 (United States)
We examine a model of rupture propagation on a one-dimensional earthquake fault, focusing both on the role of small length scales in controlling the dynamics and on the mechanisms by which propagating modes are selected. In order to obtain a well-defined continuum theory, we add a small amount of viscous dissipation to a previously studied model in which rupture propagation was controlled by a finite-difference grid spacing. We find that the dynamically selected rupture mode is one in which nearly free slip occurs in a pulse whose speed and shape are determined by a novel selection mechanism.
- DOE Contract Number:
- FG03-84ER45108
- OSTI ID:
- 6585945
- Journal Information:
- Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States), Vol. 47:5; ISSN 1063-651X
- Country of Publication:
- United States
- Language:
- English
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