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Published June 15, 1964 | Published
Journal Article Open

Radiation patterns of seismic surface waves from buried dipolar point sources in a flat stratified Earth

Abstract

Explicit compact expressions were obtained for the far displacement field of Rayleigh and Love waves generated by force configurations which served to simulate shear-type faults with arbitrary dip and slip. The medium transfer functions for dipolar sources were computed for a Gutenberg flat continental earth model with 23 layers. These were then used to obtain universal radiation pattern charts for couple- and double-couple-type sources at various depths over the period range 50 to 350 sec. It was demonstrated by means of few typical examples that the radiation patterns of Rayleigh waves may depend strongly on the depth of the source, and unlike the fundamental Love mode may be rather sensitive to small variations in frequency. For a given source and frequency the radiation pattern may differ considerably from one mode to another.

Additional Information

© 1964 American Geophysical Union. Manuscript received February 21, 1964. This research was supported by contract AF-49(638)-1337 of the Air Force Office of Scientific Research as part of the Advanced Research Projects Agency project Vela. We wish to thank Keiiti Aki for valuable discussions during the early stages of this work.

Attached Files

Published - Ben-Menahem_et_al-1964-Journal_of_Geophysical_Research-_Solid_Earth__1978-2012_.pdf

Files

Ben-Menahem_et_al-1964-Journal_of_Geophysical_Research-_Solid_Earth__1978-2012_.pdf

Additional details

Created:
August 19, 2023
Modified:
October 17, 2023