Gusev's stochastic model for the seismic source: high-frequency behavior in the far zone

G. M. Molchan

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arXiv · 1905.05603

Gusev's stochastic model for the seismic source: high-frequency behavior in the far zone

G. M. Molchan

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Abstract

This paper discusses local features in the source function that generate in the far zone simultaneously (a) a quadratic decay of the source spectrum and (b) the loss of radiation directivity at high frequencies. A. Gusev drew attention to this problem and suggested that a positive solution can be obtained for earthquake rupture front with a rather complex ("lace") structure. Below we give a theoretical solution of the problem and show that the front structure can be simple enough, but not smooth.

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G. M. Molchan. 2019-05-14. Gusev's stochastic model for the seismic source: high-frequency behavior in the far zone. https://arxiv.org/abs/1905.05603

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