| 弱裂隙各向异性对地震体波的效应 |
| |
| 引用本文： | 姚陈,雷军.弱裂隙各向异性对地震体波的效应[J].中国地震,1997,13(3):232-240. |
| |
| 作者姓名： | 姚陈 雷军 |
| |
| 作者单位： | 国家地震局地质研究所 |
| |
| 摘 要： | 由数据模拟证明，尽管对地震体波走时及纵波动力学特征来讲，弱裂隙各向异性的影响可以忽略，但与各向同性介质中的横波相比，即使对弱裂隙介质，穿透其中的横波的偏振特征也会出现显著的不同。
|
| 关 键 词： | 弱裂隙 各向异性 横波分裂 地震体波 地震 |
The Effects of Weak Crack induced Anisotropy on Seismic Body Waves |
| |
| Yao Chen\ Lei Jun\ Xiong Yangwu.The Effects of Weak Crack induced Anisotropy on Seismic Body Waves[J].Earthquake Research in China,1997,13(3):232-240. |
| |
| Authors: | Yao Chen\ Lei Jun\ Xiong Yangwu |
| |
| Abstract: | From numerical modelling,it can be demonstrated that the weak crack induced anisotropy introduces the polarizations of two quasi shear waves of splitting different from that of the shear wave propagation isotropiclly,although its effects on the seismic traval time and P wave feature could be ignored.Such difference appears as the coupling between the motions in the incident plane and that orthogonally.In the wider range of shear wave dominent frequency,the effects of the weak anisotropy on shear waves can not disappear.The polarization analysis on the three componenet records will play an important role for theoretical study and observation interpretation to shear wave. |
| |
| Keywords: | Weak crack induced anisotropy Shear wave splitting Polarization analysis |
| 本文献已被 CNKI 维普 等数据库收录！ |
