Wave Field Separation Based on 3D Equivalent Elastic Wave Equation in Wave Number Domain
详细信息
- 责任者：Li Zhenchun (School of Geosciences ; China University of Petroleum ; Qingdao 266580 ; China) ; Chen Fuqiang
- 刊名：Journal of China University of Petroleum
- 出版年：2012
- 卷期：36(4)
- 关键词：波动方程 ; wave equation ; 波场分离 ; wavefield separate
- 页码：p.51-54
- 图表：illus., 11 refs.
- 分类号：1600
- issnNo：ISSN1673-5005
- isbnNo：CN37-1441/TE
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 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.
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