Full waveform inversion (FWI) has become one of the important means for high precision velocity modeling, but there are still many problems in real seismic data processing. In this abstracts, we use non-stationary phase rotation to correct the phase of seismic waveform for FWI. In order to mitigate the cycle skipping problem, we introduce an adaptive factor to adjust the rotation angle value. The underground media properties are very complex and anisotropic, in order to match the kinematics accurately, we use pseudo-spectral method to conduct the acoustic TTI media forward modeling. The numerical experiments demonstrate that the adaptive non-stationary phase correction FWI in TTI media is a good method to guide the FWI objective function to jump out of the local minimum and it can effectively mitigate the cycle skipping problem.
Presentation Date: Tuesday, September 26, 2017
Start Time: 3:30 PM
Location: Exhibit Hall C, E-P Station 3
Presentation Type: EPOSTER