研究各向异性介质参数的合成地震图方法

基于EDA各向异性理论， 利用合成地震图方法求取各向异性介质参数. 该方法利用求取克利斯多夫方程特征向量和特征值的解析表达式， 避免了矩阵运算过程中奇异解的产生， 也减少了大量的运算时间， 具有一定的优越性. 同时， 运用凝聚函数法对合成记录与原始记录进行检验， 结果显示在S波的主频范围内二者具有很好的线性关系. 表明用该方法求得的各向异性介质参数, 可以客观反映和描述研究区域的介质各向异性特性. 

RESEARCH ON ANISOTROPIC PARAMETERS BY SYNTHETIC SEISMOGRAM

Based on the extensive dilatancy anisotropy theory, the method of synthetic seismogram is used to estimate the anisotropic parameters. The advantage of the method is that it avoids the singularity resolution and saves calculation time of computer by using the eigenvalue and eigenvector analytical expressions of Christoffel equation, at the same time, the result is tested by coherence function. The test result reveals there exists a fine linear relation between original records and synthetic records, indicating the anisotropic parameters estimated by synthetic seismogram can reflect and describe the anisotropic characteristics of the given region medium.