用Stokes方程的差分方法制作合成地震记录

制作合成地震记录是进行波场识别、对比、波场延拓、参数识别与参数反演的必要手段。差分方法是解偏微分方程的有效而实用的方法，它的计算量小、精确度高。本文首次使用差分方法解变系数的Stokes方程以制作非均匀黏弹介质中地震波场的合成记录。结果表明，考虑了介质的黏弹性和非均匀性的地震模型更加接近于实际情况，可以避免地震解释中的误导。

Producing seismogram using difference method of Stokes equation.

Producing synthetic seismogram is a necessary method for identification and contrast of wave field, wave field continuation, and identification and inversion of parameters. The difference method is efficient and practical method to solve the partial differential equation,which has some advantages of a little computational effort and high accuracy. The paper first applies the difference method to Stokes equation with variable coefficient for producing seismogram of wave field in viscoelasticity and heterogeneity The result proved that the seismic model combining viscoelasticity and heterogeneity can be more matching reality and avoid the pitfall in the seismic interpretation.