Journal
JOURNAL OF GEOPHYSICS AND ENGINEERING
Volume 12, Issue 6, Pages 934-945Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1742-2132/12/6/934
Keywords
CRS approximation; anisotropy estimation; seismic inversion
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Funding
- ROSE project
- China Scholarship Council (CSC)
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Multiparameter stacking is a crucial tool to get a high-quality time image of the subsurface, which can provide a basis for many important applications. We analyse the CRS approximation for a circular reflector embedded into effective anisotropic media. In this case, the CRS attributes depend on both reflector curvature and anisotropy parameters. We consider the effective anisotropic model from two anisotropic cases-elliptical isotropic and transversely isotropic with vertical symmetry axis-and one vertically heterogeneous isotropic case, i.e. two-layer model. By performing a sensitivity analysis, we show how the estimates depend on anisotropy parameters. We convert the CRS attributes into parameters for the isotropic model and analyse these estimates' behaviour along the seismic line. From this behaviour, we estimate both structure and anisotropy parameters.
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