THE ELASTODYNAMIC GREEN TENSOR IN AN ANISOTROPIC HALF-SPACE

被引：15

作者：

BENMENAHEM, A ^{[1
]}

SENA, AG ^{[1
]}

机构：

[1] MIT,DEPT EARTH ATMOSPHER & PLANETARY SCI,EARTH RESOURCES LAB,CAMBRIDGE,MA 02139

来源：

GEOPHYSICAL JOURNAL INTERNATIONAL | 1990年 / 102卷 / 02期

关键词：

anisotropy; Green's tensor;

D O I：

10.1111/j.1365-246X.1990.tb04475.x

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We study the effect of the free surface on waves from buried sources in an elastic half‐space with azimuthal isotropy. The exact Green's tensor is obtained in the form of a Hankel transform over the horizontal wavenumber. The integrals are then evaluated at the far‐field by means of the stationary phase approximation. An alternative representation of the Green's tensor is offered in the form of a hybrid multipole expansion valid also in the near‐field. The variation of the reflection coefficients as a function of the image source angle is presented for various earth models and it is shown that the effect of the anisotropy at the source is more important than its effect on the reflected waves from the free surface. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：421 / 443

页数：23

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