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本文在B、P、C坐标中给出了弹性波在横向均匀介质中的传播矩阵,并将其表示为五个形式简单的矩阵乘积,其中有四个矩阵是与频率无关的。我们用传播矩阵的分离方式,将Abo-Zena(1979)算法大量简化。用本文的算法计算综合地震图时,计算量要比文献[2,7,8]的算法少一半以上。 文中还给出了地震面波频散函数和体波广义反射系数的快速计算步骤。
In this paper, the propagation matrix of elastic wave in a transverse homogeneous medium is given in B, P, C coordinates and expressed as five simple matrix products, of which four are independent of frequency. We use the separation of propagation matrix to simplify Abo-Zena (1979) algorithm. Computational seismic seismograms are less than half of those in [2, 7, 8] when using this algorithm. The paper also gives a quick calculation step of seismic surface wave dispersion function and generalized reflection coefficient of bulk wave.