应用精细积分法(PIM)和扩展Wittrick-Williams(W-W)算法求解横观各向同性分层半空间中的Love波问题.Love波对应于波数一频率域线性常微分方程的本征值问题.精细积分法是求解线性常微分方程两端边值问题和初值问题的高精度算法.利用本征值计数技术,扩展W-W算法可以不遗漏地找到所有本征值.因此,文中使用的方法可以得到计算机精度意义下的精确解.
The Love surface wave in a transversely isotropic and layered half-space is studied by using the precise integration method (PIM) and the extended Wittrick-Williams (W-W) algorithm. The Love surface wave is eigenvalue problem of linear ordinary differential equations (ODEs) in frequency-wavenumbet domain. The PIM is a precise method for solving linear ODEs with two-point boundary value conditions or initial value conditions. By using the eigenvalue count technology, the extended W-W algorithm can find all eigenvalues without missing anyone. The method presented in this paper is exact, which depends only on the precision of the computer used.