Efficient mixed-domain pure P-wave equations for 2D and 3D tilted transversely isotropic media

Li, Bowen1; Wang, Deli1; Zhou, Jinju2; Zhang, Qianxiang3; Wang, Rui1

2020-05-09

10.1007/s11600-020-00438-9

Acta Geophysica   影响因子和分区

1895-6572

1895-7455

In transversely isotropic (TI) media, accurate and efficient pure P-wave extrapolation is the basis of seismic imaging and inversion algorithms. For pure P-wave equations in TI media, combining the finite-difference (FD) method with the pseudo-spectral (PS) method is an effective solution. However, if the mixed-domain pure P-wave equation contains multiple wavenumbers, using the hybrid approach will involve multiple Fourier transforms, which will result in high computational costs. Referring to the weak anisotropy approximation, we propose a new approximate P-wave phase velocity expression. We then use an optimization strategy to reduce the number of wavenumber terms in the corresponding dispersion relations and derive the mixed-domain pure P-wave equations in 2D and 3D tilted transversely isotropic (TTI) media. Through numerical experiments in 2D and 3D TTI models, we verify the feasibility and efficiency of the proposed mixed-domain P-wave equations.

Anisotropy P-wave Fourier transform

SCI ; EI

英语

其他

Natural Science Foundation of China (NSFC)[41374108] ; Major Projects of the National Science and Technology of China[2016ZX05026-002-003] ; Jilin University[10183201836] ; China scholarship council[201906170234]

Geochemistry & Geophysics

Geochemistry & Geophysics

WOS:000531220000002

SPRINGER INTERNATIONAL PUBLISHING AG

20201908635976

Wave equations ; Seismic waves ; Fourier transforms

Seismology:484 ; Calculus:921.2 ; Mathematical Transformations:921.3 ; Physical Properties of Gases, Liquids and Solids:931.2

Web of Science

1.Jilin Univ, Coll Geoexplorat Sci & Technol, Changchun, Peoples R China
2.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen, Peoples R China
3.Changjiang Geophys Explorat & Testing CO LTD, Wuhan, Peoples R China

Li, Bowen,Wang, Deli,Zhou, Jinju,et al. Efficient mixed-domain pure P-wave equations for 2D and 3D tilted transversely isotropic media[J]. Acta Geophysica,2020,68(3):605-618.

Li, Bowen,Wang, Deli,Zhou, Jinju,Zhang, Qianxiang,&Wang, Rui.(2020).Efficient mixed-domain pure P-wave equations for 2D and 3D tilted transversely isotropic media.Acta Geophysica,68(3),605-618.

Li, Bowen,et al."Efficient mixed-domain pure P-wave equations for 2D and 3D tilted transversely isotropic media".Acta Geophysica 68.3(2020):605-618.