伪谱法地震波传播数值模拟

英文篇名：Numerical modeling for seismic wave propagation via pseudospectral method
中文刊名：石油物探
英文刊名：Geophysical Prospecting For Petrole
作者：马永旺 ; 詹正彬 ; 顾汉明
英文作者：Ma YongwangMa Yongwang ; Geophysical Department ; China University of Geosciences ; Wuhan 430074
中文关键词：伪谱法 ; 地震波传播 ; 数值模拟 ; 各向异性
英文关键词：pseudospectral method ; seismic wave propagation ; numerical modeling ; anisotropy
出版日期：2001-06-25
机构：中国地质大学地球物理系!武汉430074,中国地质大学地球物理系!武汉430074,中国地质大学地球物理系!武汉430074
年：2001
期：02
出版单位：石油物探

摘要

介绍了建立在弹性波方程基础上的伪谱法地震波传播正演模拟及其模拟结果。伪谱法的特点是用快速傅立叶变换 (FFT)求解波动方程 ,数值模拟效率很高 ,其主要研究的是各向异性介质和层状介质中地震波传播的特征。相应的程序可用于均匀介质和不均匀介质中地震波传播的模拟。模拟结果表明 ,伪谱法是一种有效的地震波数值模拟方法
This paper presents the forward modeling for seismic wave propagation via pseudospectral method and the modeling results. The characteristic of the pseudospectral method (PSM)is that it utilizes Fast Fourier Transform (FFT) to calculate the second order spatial derivatives of displacements in wave equations, which makes PSM efficient for seismic forward modeling. The programs developed can work for forward modeling of seismic waves propagating in both homogeneous and inhomogeous. Numerical results show that pseudospectral method is a effective method for seismic wave modeling.

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