Wave propagation in random anisotropic media
Wave propagation in random anisotropic media
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随机各向异性介质中的波传播
DOI：
10.1029/92jb00738
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发表时间：
1992
影响因子：
--
通讯作者：
C. Jacquin
中科院分区：
文献类型：
--
作者：
L. Jannaud;P. Adler;C. Jacquin
基于Aki和Chouet（1975）和Sato（1982）的线性理论，提出了一种确定各向异性二维随机介质特征长度的方法。从尾波谱中提取了等效各向异性高斯介质的相关长度。证明了对于高斯相关函数和弱速度波动，速度分布的几何各向异性不会引起传播各向异性。分析了布尔介质的谱功率。
A method to determine the characteristic lengths of anisotropic two-dimensional random media is developed which is based on the linear theory of Aki and Chouet (1975) and Sato (1982). The correlation lengths of an equivalent anisotropic Gaussian medium are extracted from the spectrum of the codas. It is proved that for Gaussian correlation functions and weak velocity fluctuations the geometric anisotropy of the velocity distribution does not induce any propagation anisotropy. The spectral power of codas for Boolean media is also analyzed.