Abstract
We present a generalization of the two-dimensional spring-block model of earth-quakes previously studied by Olami, Feder and Christensen (Phys. Rev. Lett. 68 (1992) 1244). Making the simplest possible assumption, we regard the tectonic plates as elastic media with inter- and intra-plate harmonic forces, that is, forces governed by Hooke's law. The robustness of the model with respect to effects of internal strain, vectorial force and different boundary conditions are examined and demonstrated both analytically and numerically.
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