Precursory dynamics in threshold systems

Details Precursory dynamics in threshold systems Precursory dynamics in threshold systems

2001-01-22

arxiv.org/abs/cond-mat/0101343v2

Phys. Rev. E 64, 056117(1-4) (May 2002)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures

Scientific paper

A precursory dynamics, motivated by the analysis of recent experiments on solid-on-solid friction, is introduced in a continuous cellular automaton that mimics the essential physical contents of earthquake source processes. The resulting system of equations for the inter-event cycle can be decoupled and yields an analytical solution in the mean-field limit, exhibiting a smoothing effect of the dynamics on the stress field. Simulation results show the resulting departure from scaling at the large-event end of the frequency distribution, and support claims that the field leakage may parametrize the superposition of scaling and characteristic regimes observed in real earthquake faults.

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