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Elastic wave propagation in an irregularly layered medium |
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| Authors: | Rossana Vai Jos Manuel Castillo-Covarrubias Francisco J Snchez-Sesma Dimitri Komatitsch Jean-Pierre Vilotte |
| Institution: | a Instituto de Ingeniería, UNAM, Cd. Universitaria, Apdo 70-472, Coyoacán 04510, México D.F., Mexico;b Centro de Investigación Sigmica, Carr. al Ajusco 203, col. H. de Padierna, Tlalpan 14200, México D.F., Mexico;c Département de Sismologie (URA 195), Institut de Physique du Globe de Paris, 4, Place Jussieu, 75252 - Paris Cedex 05, France |
| Abstract: | The indirect boundary element method (IBEM) is used to simulate wave propagation in two-dimensional irregularly layered elastic media for internal line sources. The method is based on the integral representation for scattered elastic waves using single layer boundary sources. Fulfillment of the boundary conditions leads to a system of integral equations. Results are obtained in the frequency domain and seismograins are computed through Fourier synthesis. In order to test and validate the method we present various comparisons between our results and the time series obtained analytically for a buried line source in a half-space and by using the recently developed spectral element method (SEM). |
| Keywords: | Irregularly layered viscoelastic media Synthetic seismograms Diffracted– scattered wavefields |
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