Using pseudo-spectrum method to solve the wave equation, obtained totally separated wavefield of pure P-wave and S-wave while obtaining hybrid wavefield,and preserved the information of mutual transformation of P-w ave and S-wave energy.

• 用伪谱法求解该波动方程 ,在得到混合波场的同时 ,也得到了完全分离的纯 P波或纯 S波波场 ,并保留了 P波和 S波能量相互转换的信息。