Wave field separation based on 3D equivalent elastic wave equation in wave number domain

被引：0
作者：
Li, Zhen-Chun [1 ]
Chen, Fu-Qiang [1 ]
机构：
[1] School of Geosciences in China University of Petroleum
来源：
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2012年 / 36卷 / 04期
关键词：
Amplitude distortion; Helmholtz equation; Wave field separation; Wave number domain;
D O I：
10.3969/j.issn.1673-5005.2012.04.009
中图分类号：
学科分类号：
摘要：
The mixed wave field including P wave and S wave can be obtained after forward modeling or extrapolating based on the conventional elastic wave equation. The coupling wave field can be separated into pure P wave and S wave via Helmholtz decomposition. But the previous method produces amplitude distortion. To eliminate this phenomenon, a new equivalent elastic wave equation was presented in wave number domain taking advantage of the features that the curl of P wave is zero and divergence of S wave is zero. The neo-equation derives from separating the conventional wave equation into two portions contained curl-free and divergence-free. The numerical results show that the method can simultaneously produce the mixed wave field, pure P wave field and S wave field. The amplitude distortion was removed.
引用
收藏
页码：51 / 54
页数：3
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