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Study of elastic wave propagation in two phase anisotropic media by numerical modeling of pseudospectral method 被引量:5
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作者 刘洋 李承楚 《Acta Seismologica Sinica(English Edition)》 CSCD 2000年第2期143-150,共8页
When there exists anisotropy in underground media elastic parameters of the observed coordinate possibly do not coincide with that of the natural coordinate. According to the theory that the density of potential energ... When there exists anisotropy in underground media elastic parameters of the observed coordinate possibly do not coincide with that of the natural coordinate. According to the theory that the density of potential energy, dissipating energy is independent of the coordinate, the relationship of elastic parameters between two coordinates is derived for two-phase anisotropic media. Then, pseudospectral method to solve wave equations of two-phase anisotropic media is derived. At last, we use this method to simulate wave propagation in two-phase anisotropic media four types of waves are observed in the snapshots, i.e., fast P wave and slow P wave, fast S wave and slow S wave. Shear wave splitting, SV wave cusps and elastic wave reflection and transmission are also observed. 展开更多
关键词 two-phase anisotropy natural coordinate observed coordinate elastic parameters nu merical modeling pseudospectral method
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