SH-wave generation by dislocation sources—A numerical study
SH-wave generation by dislocation sources—A numerical study
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DOI：
10.1785/bssa0690010001
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发表时间：
1979-02
影响因子：
3
通讯作者：
R. Herrmann
中科院分区：
文献类型：
--
作者：
R. Herrmann
给出了平面层状地球中SH波对点位错源引起的切向位移贡献的数值方法。该方法在复数k平面上采用轮廓线积分，包括沿k平面实轴和虚轴的分支线积分以及沿实轴的极点的贡献。文中举例说明了忽略P-SV对切向位移贡献的影响，不适当截断对估计远场时程的影响，以及复k平面上各种奇点对解的相对贡献。
A numerical technique is presented for attaining the SH-wave contribution to tangential displacements due to point dislocation sources in a plane layered Earth. The method uses contour integration in the complex k-plane and includes the contribution of branch line integrals along the real and imaginary axes of the k-plane as well as poles along the real axis. Examples are provided to illustrate the effect of neglecting the P-SV contribution to tangential displacements, the effect of improper truncation in estimating far-field time histories, as well as the relative contribution of the various singularities in the complex k-plane to the solution.