Multi-stage full waveform inversion strategy for 2D elastic VTI media
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
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AbstractOne 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 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.
CitationJu-Won Oh*, Tariq Alkhalifah, and Dong-Joo Min (2015) Multi-stage full waveform inversion strategy for 2D elastic VTI media. SEG Technical Program Expanded Abstracts 2015: pp. 1204-1208. doi: 10.1190/segam2015-5850234.1
PublisherSociety of Exploration Geophysicists