Peculiarities of surface wave fields in laterally inhomogeneous media in the framework of ray theory
Peculiarities of surface wave fields in laterally inhomogeneous media in the framework of ray theory
复制标题
射线理论框架下横向非均匀介质中表面波场的特性
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
Y. Roslov
中科院分区：
文献类型：
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作者：
T. Yanovskaya;Y. Roslov
总结
Summary
The paper presents the results of numerical modelling of Love waves in a layer with varying thickness over a homogeneous half-space. Rays, amplitudes of a transient wave, and synthetic seismograms were calculated by the use of the space-time ray method. It is shown that the lateral heterogeneity strongly affects the surface wave field: the seismograms at two near-by points at the same epicentral distance differ markedly. Anomalies in the Rayleigh and Love wave polarization are analysed by treating the second term in the series, representing the surface wave field in a laterally heterogeneous medium. The effects of lateral heterogeneity on the polarization are similar to those for body waves.