Elastic wave propagation in an irregularly layered medium

被引:38
作者
Vai, R
Castillo-Covarrubias, JM
Sánchez-Sesma, FJ
Komatitsch, D
Vilotte, JP
机构
[1] Univ Nacl Autonoma Mexico, Inst Ingn, Mexico City 04510, DF, Mexico
[2] Ctr Invest Sigmica, Mexico City 14200, DF, Mexico
[3] Inst Phys Globe, Dept Sigmica, URA 195, F-75252 Paris 05, France
关键词
Irregularly layered viscoelastic media; synthetic seismograms; diffracted-scattered wavefields;
D O I
10.1016/S0267-7261(98)00027-X
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
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). (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:11 / 18
页数:8
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