Multi-stage full waveform inversion strategy for 2D elastic VTI media

Ju-Won Oh*, Tariq Alkhalifah, Dong-Joo Min
2015 SEG Technical Program Expanded Abstracts 2015   unpublished
One of the most important issues in the multi-parametric full waveform inversion (FWI) is to find an optimal parameterization, which helps us recover the subsurface anisotropic parameters as well as seismic velocities, with minimal tradeoff. As a result, we analyze three different parameterizations for elastic VTI media in terms of the influence of the S-waves on the gradient direction for c13, the spatial coverage of gradient direction and the degree of trade-offs between the parameters. Based
more » ... e parameters. Based on the dependency results, we design a multi-stage elastic VTI FWI strategy to enhance both the spatial coverage of the FWI and the robustness to the trade-offs among the parameters as well as FWI for the c13 structure. SEG New Orleans Annual Meeting
doi:10.1190/segam2015-5850234.1 fatcat:vzlbtjru3rhy5eami3rtbsbdmy