| 摘要 |
A method for attenuating pseudo S-waves in acoustic anisotropic wave propagation obtains a plurality of anisotropic media parameters associated with a given subsurface area from which acquisition seismic data are obtained. A shot position of a seismic source used to generate simulated seismic data is identified. The seismic source has a source wavelet that is a function of time. Anisotropic media parameters are modified at the shot position to define an ellipsoidally anisotropic region at the shot position of the seismic source. The function of time of the source wavelet is used to define a source vector used together with the modified anisotropic media parameters in an anisotropic wave equation to obtain a stress vector wavefield. The stress vector wavefield is used in a wavenumber domain representation of the anisotropic wave equation to obtain a pure P-wave wavefield from acoustic anisotropic wave propagation. |
