Abstract：The space derivation term of a wave equation is accurately calculated using Fourier transform method, and the wave equation only relating to time derivative in time-space domain is derived. Solving this equation with the aid of central difference method brings the numerical recursion formula for forward modeling or reverse time migration of seismic wave field in the medium in which seismic velocity varies. The key to this method lies in introducing two auxiliary wave fields relating to velocity and spatial frequency of Fourier transform respectively after multi一dimentional Fourier transform of space vector is made, Theoretically, this method is suitable to the forward modeling and migration of seismic wave field in complex area where seismicveiocity and structure shape vary arbitrarily. Theoretical result proved this method satisfactory.
周彬忠, 包吉山. 复杂地区地震波场的正演模拟与反时偏移[J]. 石油地球物理勘探, 1988, 23(3): 257-262.
Zhou Binzhong, Bao Jishan. The forward modeling and reverse time migration of seismic in complex medium. OGP, 1988, 23(3): 257-262.
