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Routine estimation of earthquake source complexity: The 18 October 1992 Colombian earthquake

Charles J. Ammon·Thorne Lay·Aaron A. Velasco·John E. Vidale
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Abstract

We describe two methods, suitable for routine application to teleseismic recordings, that characterize the time history of seismic events. Stacking short-period signals from large regional arrays provides stable estimates of high-frequency radiation from the source, and an empirical Green's function deconvolution procedure extracts reliable, broadband time functions suitable for analysis of faulting complexity and the spatio-temporal extent of rupture. Combined, these procedures characterize the source radiation of large events ( M s > 7) between 200- and 0.5-sec periods.

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Bulletin of the Seismological Society of AmericaArticle
90° N90° S · 180° W ← longitude → 180° E
Source-reported bounding extent: -4.29819° to 12.4373° latitude; -78.99094° to -66.87633° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Charles J. Ammon, Thorne Lay, Aaron A. Velasco, John E. Vidale. 1994. Routine estimation of earthquake source complexity: The 18 October 1992 Colombian earthquake. https://doi.org/10.1785/bssa0840041266

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