Complex dynamics in a one--block model for earthquakes

Details Complex dynamics in a one--block model for earthquakes Complex dynamics in a one--block model for earthquakes

2004-08-06

arxiv.org/abs/nlin/0408016v1

Physica A 342, 178-185 (2004).

Nonlinear Sciences

Chaotic Dynamics

8 pages, 7 figures, to be published in Physica A

Scientific paper

10.1016/j.physa.2004.04.076

A two-dimensional earthquake model that consists of a single block resting upon a slowly moving rough surface and connected by two springs to rigid supports is studied. Depending on the elastic anisotropy and the friction force three generic regimes are possible: i) pure creep; ii) pure stick-slip motion; and iii) a mixed regime. In all cases the long-time dynamics (fixed point, periodic orbit or chaos) is determined by the direction of the pulling velocity. The possible relevance of our findings to real faults is briefly discussed.

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