Shihang Feng, Gerard T. Schuster; Skeletonized wave-equation inversion in vertical symmetry axis media without too much math. Interpretation ; 5 (3): SO21–SO30. doi: https://doi.org/10.1190/INT-2016-0212.1
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We have developed a tutorial for skeletonized inversion of pseudo-acoustic anisotropic vertical symmetry axis (VTI) data. We first invert for the anisotropic models using wave-equation traveltime inversion. Here, the skeletonized data are the traveltimes of transmitted and/or reflected arrivals that lead to simpler misfit functions and more robust convergence compared with full-waveform inversion. This provides a good starting model for waveform inversion. The effectiveness of this procedure is illustrated with synthetic data examples and a marine data set recorded in the Gulf of Mexico.