Seismic Wave Propagation in Stratified Media
Seismic Wave Propagation in Stratified Media
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DOI：
10.26530/oapen_459524
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发表时间：
1983-04
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影响因子：
--
通讯作者：
B. Kennett
中科院分区：
文献类型：
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作者：
B. Kennett
出版商摘要 本章重点介绍分层介质中的弹性波传播。层状介质中弹性波传播理论的发展受到地震波传播问题和地震记录的地震记录性质的强烈影响。对于弹性波传播的纯分析发展，在具有覆盖均匀半空间的一个或两个均匀层的模型中达到了可管理的代数复杂性水平。本章展示了如何在水平分层结构中方便地根据反射和透射矩阵来激发弹性波。该过程允许构建介质的完整响应或具有所需特性的近似值，以便可以计算理论地震图以获得弹性参数的实际分布。尽管这种发展是针对各向同性介质的，但如果采用允许所有波类型之间耦合的 3 × 3 反射和透射矩阵，则几乎所有结果都直接适用于完全各向异性的情况。分层内源和接收器的波场的这种发展可用于其他类别的波传播。
Publisher Summary This chapter focuses on elastic wave propagation in stratified media. The development of the theory of elastic wave propagation in stratified media has been strongly influenced by the problems of seismic wave propagation and the nature of the seismograms recorded from earthquakes. For purely analytic developments of elastic wave propagation, the level of manageable algebraic complexity is reached in a model with one or two uniform layers overlying a uniform half space. This chapter shows how the excitation of elastic waves, within a horizontally stratified structure, can be conveniently developed in terms of reflection and transmission matrices. This procedure has allowed the construction of the full response of the medium or approximations with desired properties so that theoretical seismograms may be calculated for realistic distributions of elastic parameters. Although this development has been for isotropic media, nearly all the results apply directly to the case of full anisotropy if 3 × 3 reflection and transmission matrices allowing coupling between all wave types are employed. This development of the wavefield for both source and receiver within the stratification may be used for other classes of wave propagation.