EXCITATION OF FREE OSCILLATIONS AND SURFACE WAVES BY A POINT SOURCE IN A VERTICALLY HETEROGENEOUS EARTH
EXCITATION OF FREE OSCILLATIONS AND SURFACE WAVES BY A POINT SOURCE IN A VERTICALLY HETEROGENEOUS EARTH
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DOI：
10.1029/jz072i014p03689
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发表时间：
1967-01-01
影响因子：
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通讯作者：
SAITO, M
中科院分区：
文献类型：
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作者：
SAITO, M
本文利用变分方程，导出了任意声源情况下垂直非均匀弹性介质表面波和自由振荡的辐射模式。结果用简正模解和源函数表示，表明除了简正模解以外的计算对于构造辐射方向图是不必要的。源函数为一个单一的力，一个单一的夫妇，和一个双对没有扭矩，所有在任意方向，也来自。
Radiation patterns of surface waves and free oscillations for vertically heterogeneous elastic media are derived for arbitrary sources, using variational equations. The results are expressed in terms of normal mode solutions and source functions, and they show that calculations other than those of normal mode solutions are unnecessary to construct radiation patterns. Source functions for a single force, a single couple, and a double couple without torque, all in arbitrary directions, are also derived.