中文摘要：

文中对传统伪谱法和其改进的错格伪谱法从理论方法及实例试算进行了分析及对比,总结了错格伪谱法的优点。通过脉冲序列一阶微分算例更加突出了错格伪谱法微分的局部化优点;通过二维声波的算例验证了错格伪谱法的正确性;通过不均匀介质中弹性波的算例验证了错格伪谱法比传统伪谱法有更高的精度。最后用错格伪谱法模拟了不均匀缝洞型储层介质中弹性波的传播问题。

英文摘要：

The paper carried out the analysis and correlation of traditional pseudo-spectrum and improved staggered-grid pseudo-spectrum from theoretical method and cases,summarized the superiority of staggered-grid pseudo-spectrum method.The more prominent advantage of differential localization of staggered-grid pseudo-spectrum is showed by first-order differential computational case of pulse sequence;the correctness of staggered-grid pseudo-spectrum method is proved by 2-D acoustic wave computational case;the precis...