Vibration-induced slip in sheared granular layers and the micromechanics of dynamic earthquake triggering

M. Griffa, E. G. Daub, R. A. Guyer, P. A. Johnson, C. Marone, J. Carmeliet

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

We perform 2D Molecular Dynamics simulations of sheared granular layers in the presence of applied vibration. A primary goal is to understand the physics of dynamic earthquake triggering. We adopt a mesoscopic measure of non-affine deformation for characterizing the granular dynamics during slip without or with applied vibration. Our results show that the onset of non-affine strains correlates with the onset of slip and appears earlier in the presence of vibration than in its absence, in agreement with the evidence for triggered slip.

Original languageEnglish (US)
Article number14001
JournalEPL
Volume96
Issue number1
DOIs
StatePublished - Oct 1 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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