Bulletin of the Seismological Society of America
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Bulletin of the Seismological Society of America; December 1983; v. 73; no. 6A; p. 1621-1636
© 1983 Seismological Society of America
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Diffraction of elastic waves by three-dimensional surface irregularities

FRANCISCO J. SÁNCHEZ-SESMA

INSTITUTO DE INGENIERIA, UNAM, CO. UNIVERSITARIA, APDO. 70-472, COYOACAN 04510, MEXICO, D.F. Mexico

Abstract

A boundary method is applied to study the scattering and diffraction of elastic waves by three-dimensional surface irregularities on the surface of a half-space. The method makes use of the c-completeness of a family of wave functions in order to construct with linear combinations the diffracted fields. Boundary conditions are satisfied in a least-squares sense. For axisymmetric scatterers, an azimuthal decompositon is presented. Some numerical results for vertical incidence of P waves are reported.






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Copyright © 1983 by the Seismological Society of America.