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Use of reciprocity theorem for obtaining Rayleigh wave radiation patterns

DEPARTMENT OF GEOLOGY PANJAB UNIVERSITY, CHANDIGARH, India

Abstract

The reciprocity theorem is used to obtain Rayleigh wave radiation patterns from sources on the surface of or within an elastic semi-infinite medium. Nine elementary line sources first considered are: horizontal and vertical forces, horizontal and vertical double forces without moment, horizontal and vertical single couples, center of dilatation (two dimensional case), center of rotation, and double couple without moment.

The results are extended to the three dimensional case of similar point sources in a homogeneous half space. Haskell's results for the radiation patterns of Rayleigh waves from a fault of arbitrary dip and direction of motion are reproduced in a much simpler manner. Numerical results on the effect of the depth of these sources on the Rayleigh wave amplitudes are shown for a solid having Poisson's ratio of 0.25.

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				I. N. GUPTA Body wave radiation patterns from elementary sources within a half space Bulletin of the Seismological Society of America, August 1, 1967; 57(4): 657 - 674. [Abstract] [PDF]