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Spectral response of an elastic sphere to dipolar point-sources

SEISMOLOGICAL LABORATORY CALIFORNIA INSTITUTE OF TECHNOLOGY, PASADENA, California
DIVISION OF GEOLOGICAL SCIENCES

Abstract

A stratified elastic sphere is excited by an harmonic dipolar source of arbitrary orientation and depth. The total field is expanded in series of vector spherical harmonics and then condensed into a convenient form of a displacement dyadic. The Haskell-Gilbert matrix method is employed to obtain the radial factor of the displacements for a multilayered sphere. The dependence of the field on the azimuth angle and the fault elements is obtained for the case of a double-couple at depth. Expressions are also developed for the radiation pattern of surface waves over a spherical stratified earth.

This article has been cited by other articles:

				S. N. BHATTACHARYA Rayleigh waves from a point source in a spherical medium with homogeneous layers Bulletin of the Seismological Society of America, February 1, 1978; 68(1): 231 - 238. [PDF]

				A. BEN-MENAHEM, S. W. SMITH, and T.-L. TENG A procedure for source studies from spectrums of long-period seismic body waves Bulletin of the Seismological Society of America, April 1, 1965; 55(2): 203 - 235. [Abstract] [PDF]