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Stick-slip propagation velocity and seismic source mechanism

DEPARTMENT OF GEOLOGY STATE UNIVERSITY OF NEW YORK, BINGHAMTON, NEW YORK 13901
LWW AFCRL, BEDFORD, MASSACHUSETTS 01730

Abstract

Earthquakes, at least the shallow ones, take place along pre-existing fault planes. The controlling factor is, therefore, friction, and the fault growth process resembles that of stick-slip propagation. We have simulated this process in a two-dimensional model. It is found that propagation velocity can range from sub-shear to 1.1 V_s (the latter is not a limiting value).

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