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Modeling strong motions produced by earthquakes with two-dimensional numerical codes

Helmberger, Donald V. and Vidale, John E. (1988) Modeling strong motions produced by earthquakes with two-dimensional numerical codes. Bulletin of the Seismological Society of America, 78 (1). pp. 109-121. ISSN 0037-1106. http://resolver.caltech.edu/CaltechAUTHORS:20140813-142251802

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Abstract

We present a scheme for generating synthetic point-source seismograms for shear dislocation sources using line source (two-dimensional) theory. It is based on expanding the complete three-dimensional solution of the wave equation expressed in cylindrical coordinates in an asymptotic form which provides for the separation of the motions into SH and P-SV systems. We evaluate the equations of motion with the aid of the Cagniard-de Hoop technique and derive close-formed expressions appropriate for finite-difference source excitation.


Item Type:Article
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http://bssa.geoscienceworld.org/content/78/1/109.abstractPublisherArticle
Additional Information:© 1988, by the Seismological Society of America. Manuscript received 30 March 1987. We thank Richard Stead, Heidi Houston, and Gladys Engen for their reviews, and Robert Clayton for his efforts in developing the original finite-difference code. This work was supported by the Geophysical Sciences Division of the Air Force Geophysics Laboratory under Contract F19628-85-K-0017 and monitored by the Defense Advanced Research Projects Agency. Contribution no. 4458, Division of Geological and Planetary Sciences, California Institute of Technology.
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Funding AgencyGrant Number
Air Force Geophysics LaboratoryF19628-85-K-0017
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
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Caltech Division of Geological and Planetary Sciences4458
Record Number:CaltechAUTHORS:20140813-142251802
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140813-142251802
Official Citation:Donald V. Helmberger and John E. Vidale Modeling strong motions produced by earthquakes with two-dimensional numerical codes Bulletin of the Seismological Society of America, February 1988, v.78, p. 109-121
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48531
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:13 Aug 2014 21:47
Last Modified:13 Aug 2014 21:47

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