TY - JOUR
T1 - Asymptotic linearized inversion for acoustic variable-tilt transversely isotropic media through elliptic perturbation analysis
AU - Ouyang, Wei
AU - Liang, Quan
AU - Mao, Weijian
AU - Cheng, Shijun
N1 - KAUST Repository Item: Exported on 2023-05-29
Acknowledgements: The research reported in this publication was supported in part by the National Natural Science Foundation of China under Grant 42130808, in part by the CNPC (China National Petroleum Corporation) Scientific Research and Technology Development Project under Grant 2021DJ0506, and in part by the National Natural Science Foundation of China under Grant 41974163.
PY - 2023/5/19
Y1 - 2023/5/19
N2 - The linearized inverse scattering problem for acoustic variable-tilt transversely isotropic (TTI) media is studied. In depicting the acoustic anisotropy behavior of the TTI medium with the P-wave normal moveout velocity (NMO) Vn, density ρ, and anisotropic parameters δ and η, a single-scattering procedure of NMO pressure wavefields is developed through elliptical perturbation analysis. By high-frequency approximation, the singly scattered pressure field is naturally related with an acoustic TTI generalized Radon transform (GRT), in which the TTI scattering patterns are explicitly expressed. We asymptotically invert for the multiple material parameters of an acoustic TTI medium via constructing the GRT backprojection operator. The effectiveness of the proposed approach is demonstrated on the layered model, and its superiority over the traditional acoustic isotropic and VTI GRT inversion methods is illustrated on the overthrust model.
AB - The linearized inverse scattering problem for acoustic variable-tilt transversely isotropic (TTI) media is studied. In depicting the acoustic anisotropy behavior of the TTI medium with the P-wave normal moveout velocity (NMO) Vn, density ρ, and anisotropic parameters δ and η, a single-scattering procedure of NMO pressure wavefields is developed through elliptical perturbation analysis. By high-frequency approximation, the singly scattered pressure field is naturally related with an acoustic TTI generalized Radon transform (GRT), in which the TTI scattering patterns are explicitly expressed. We asymptotically invert for the multiple material parameters of an acoustic TTI medium via constructing the GRT backprojection operator. The effectiveness of the proposed approach is demonstrated on the layered model, and its superiority over the traditional acoustic isotropic and VTI GRT inversion methods is illustrated on the overthrust model.
UR - http://hdl.handle.net/10754/692096
UR - https://linkinghub.elsevier.com/retrieve/pii/S0165212523000471
UR - http://www.scopus.com/inward/record.url?scp=85159551723&partnerID=8YFLogxK
U2 - 10.1016/j.wavemoti.2023.103161
DO - 10.1016/j.wavemoti.2023.103161
M3 - Article
SN - 0165-2125
VL - 120
SP - 103161
JO - Wave Motion
JF - Wave Motion
ER -