DELOCALIZATION, FORESHOCKS AND AFTERSHOCKS IN A MODIFIED BURRIDGE-KNOPOFF MODEL

Abstract

I modified the Burridge-Knopoff model of seismicity so as to include blocks with no mass and forces exceeding the frictional resistant force. I, then analyze the delocalization phenomenon using numerical experiments for the one-dimensional case. This phenomenon with anomalously increased (high) frequency of shocks, where almost all blocks are involved in these shocks, proved to be an artifact caused by the model size not being sufficiently large. Foreshocks and aftershocks similar to real ones are found in three-dimensional layered model.

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Computational Seismology, Vol. 3.