Self-affine Asperity Model for earthquakes

Details Self-affine Asperity Model for earthquakes Self-affine Asperity Model for earthquakes

1995-08-25

arxiv.org/abs/cond-mat/9508119v1

Physics

Condensed Matter

TeX file, 14 pages, 3 figures available from loreto@roma1.infn.it

Scientific paper

10.1103/PhysRevLett.76.2599

A model for fault dynamics consisting of two rough and rigid brownian profiles that slide one over the other is introduced. An earthquake occurs when there is an intersection between the two profiles. The energy release is proportional to the overlap interval. Our model exhibits some specific features which follow from the fractal geometry of the fault: (1) non-universality of the exponent of the Gutenberg-Richter law for the magnitude distribution; (2) presence of local stress accumulation before a large seismic event; (3) non-trivial space-time clustering of the epicenters. These properties are in good agreement with various observations and lead to specific predictions that can be experimentally tested.

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