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Stochastic summation of empirical Green's functions

Bulletin of the Seismological Society of America

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Abstract

Two simple strategies are presented that use random delay times for repeatedly summing the record of a relatively small earthquake to simulate the effects of a larger earthquake. The simulations do not assume any fault plane geometry or rupture dynamics, but rely only on the ??-2 spectral model of an earthquake source and elementary notions of source complexity. The strategies simulate ground motions for all frequencies within the bandwidth of the record of the event used as a summand. The first strategy, which introduces the basic ideas, is a single-stage procedure that consists of simply adding many small events with random time delays. The second strategy is a two-stage summation that simulates source complexity with a few random subevent delays determined using the zero-phase scaling distribution, and then clusters energy around these delays to get an ??-2 spectrum for the sum. -from Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Stochastic summation of empirical Green's functions
Series title:
Bulletin of the Seismological Society of America
Volume
80
Issue:
6 A
Year Published:
1990
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
1418
Last page:
1432
Number of Pages:
15