Scattering of Seismic Surface Waves in Anisotropic Geomechanical Media

本研究的目的是：1。建立了各向异性介质中表面波的散射理论。2 .开发散射波场的数值计算算法，并对散射波进行直接的计算模拟；进行物理超声实验，提高对各向异性介质中散射机理的认识。提出的理论方法将基于玻恩近似和各向异性横向齐次半空间远场格林函数的二进表示的结合。物理超声实验将进行，以确定散射理论的有效性。＊＊＊

9313578 Lee The objectives of this study are: 1. to develop a scattering theory for surface waves in anisotropic media, 2. to develop an algorithm for numerical calculation of the scattered waves fields and to perform direct computational simulation of the scattering of waves, and 3. to perform physical ultrasonic experiments to obtain improved insight and understanding of the scattering mechanisms in anisotropic media. The proposed theoretical approach will be based on the combination of the Born approximation and the dyadic representation of the far field Green's function for an anistropic laterally homogeneous half- space. Physical ultrasonic experiments will be performed to ascertain the validity of the scattering theory. ***