交错网格中基于波数域插值的波场分离方法研究（英文）

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Bibliographic Details
Published in应用地球物理：英文版 Vol. 11; no. 4; pp. 437 - 446
Main Author 杜启振 张明强 陈晓冉 公绪飞 郭成锋
Format Journal Article
LanguageEnglish
Published 2014
Subjects
交错网格有限差分
保幅性
波场分离
波数域插值
逆时偏移
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ISSN1672-7975
1993-0658

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Bibliography:Du Qi-Zhen, Zhang Ming-Qiang, Chen Xiao-Ran, Gong Xu-Fei, Guo Cheng-Feng
11-5212/O
Wavefield separation of multicomponent seismic data to image subsurface structures can be realized in either the space domain or the wavenumber domain. However, as the particle velocity components used in the wavenumber-domain wavefield separation are not defined at the same grid point with the staggered-grid finite-difference method for elastic wavefield simulation, we propose the wavenumber-domain interpolation method to estimate the required values at the common grid points prior to the wavenumber-domain true-amplitude wavefield separation. Moreover, numerical experiments show that the wavenumber-domain interpolation method has high interpolation accuracy and the trueamplitude wavefield separation method shows good amplitude preservation. The application of the proposed methodology to elastic reverse-time migration can obtain good amplitudepreserved images even in the case of some velocity error.
wavefield separation;amplitude preservation;staggered-grid finite difference;wavenumber domain interpolation;reverse-time migration
ISSN:1672-7975
1993-0658