Radiation pattern of surface waves from point sources in a multi-layered medium
Radiation pattern of surface waves from point sources in a multi-layered medium
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发表时间：
1964-02
影响因子：
3
通讯作者：
N. A. Haskell
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作者：
N. A. Haskell
本文利用层矩阵，将半无限均匀介质中任意方位的单偶和双偶点源的瑞利波辐射图的处理推广到由任意数量的平行均匀层组成的介质的情况。源系数给出了一个单一的力，力偶极子没有扭矩，一个单一的夫妇，和一个双对没有扭矩，所有的任意方向矢量，也为球对称压缩源。对于最简单的情况下，允许存在的爱波，一个单一的有限层在半无限介质中，表达式的爱波辐射模式给出明确的形式相比，以前给出的瑞利波在均匀的情况下。
A previous treatment of the radiation pattern of Rayleigh waves from single and double couple point sources of arbitrary orientation in a semi-infinite homogeneous medium is generalized to the case of a medium composed of an arbitrary number of parallel homogeneous layers by the use of layer matrices. Source coefficients are given for a single force, a force dipole without torque, a single couple, and a double couple without torque, all for arbitrary orientation vectors, and also for a spherically symmetrical compressional source. For the simplest case permitting the existence of Love waves, a single finite layer over a semi-infinite medium, expressions for the Love wave radiation pattern are given explicitly in a form comparable to that previously given for Rayleigh waves in the homogeneous case.