粘弹介质中声波的伪谱法模拟  

Acoustic Wave Modeling in Viscoelastic Media by Pseudospectral Method

作　　者：傅旦丹[1] 刘洋[1] 陈遵德[1] 王慎中 

机构地区：[1]江汉石油学院地球物理勘探系

出　　处：《江汉石油学院学报》1993年第4期32-39,共8页Journal of Jianghan Petroleum Institute

摘　　要：论述了粘弹介质(Voigt体)中声波的传播方程及其地震信号响应的伪谱法数值计算方法。该方法由于用差分法计算波场的时间导数和用傅里叶变换求解波场的空间导数,故可获得高精度的数值波场解。文中详细地介绍了这种方法,讨论了粘弹介质中声波波动方程数值解的稳定性准则,并对粘弹层状介质模型进行了正演模拟计算,说明了这种算法的可行性。The acoustic propagating equation in viscoelastic media i.e. Voigt Solid and the pseudosPectral numerical calculating technique for the wave equation are treated in this paper The technique utilizes difference method to calculate the wavefield's temporal derivatives and utilizes Foutier transformation to solve the wavefield's spatial derivatives, so that the highprecision wavefields numerical solutions can be obtained The stability criterion on the numerical solution of the acoustic wave equation in viscoelastic media is discussed also The viscoelastic layer media model is calculated by the forward-modeling algorithm. and the feasibility of this algorithm is explained.

关 键 词：地震勘探 地震解释 粘弹性介质 

分 类 号：P631.443[天文地球—地质矿产勘探]