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Published April 1982 | Published
Journal Article Open

Inversion of complex body waves

Abstract

A numerical method to deconvolve complex body waves into a multiple shock sequence is developed. With the assumption that all the constituent events of a multiple shock have identical fault geometry and depth, the far-field source time function is obtained as a superposition of ramp functions. The height and the onset time of the ramp functions are determined by matching the synthetic waveforms with the observed ones in the least-square sense. The individual events are then identified by pairs of ramp functions or discrete trapezoidal pulses in the source time sequence. The method can be used for the analysis of both single and multi-station data. Teleseismic long-period P waves from the 1976 Guatemala earthquake are analyzed as a test of our method. The present method provides a useful tool for a systematic analysis of multiple event sequences.

Additional Information

© 1982 Seismological Society of America. Manuscript received 15 June 1981. We thank John Cipar, Jeffrey Given, Thorne Lay, Larry Ruff, and Fumiko Tajima for useful comments on the manuscript. This research was supported by the Division of Earth Sciences, National Science Foundation Grant EAR78-11973 and U S. Geological Survey Contract 14-08-0001-19265 and 14-08-0001-19270.

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August 22, 2023
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