An absorbing-layer method of 3-D seismic migration in an irregular acquisition geometry

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	An absorbing-layer method of 3-D seismic migration in an irregular acquisition geometry
	Wang, YX ; Zhang, GQ ; Zhou, RF
	2002-09-01
发表期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN	0001-5733
卷号	45 期号:5 页码:700-706
摘要	3-D seismic migration for an irregular acquistion geometry usually needs zero-trace padding to form a regular geometry. The benefit of zero padding is easy to do 3-D migration, but it will reduce the computative efficiency and migrated quality. In this paper we use an additional absorbing thin layer surrounding the irregular geometry instead of zero padding. It has greatly decreases computative cost and improves the migrated seismic data quality. In order to form an absorbing layer, a damping factor is added to one-way wave equation. Since the wave-field attenuates quickly when the wave penetrates this thin layer, the reflection is very small when the wave-field at the outer boundary of the absorbing layer is taken as zero, Since the migration program with the zero-boundary condition is easy to be implemented, 3-D migration of seismic data for a irregular acquisition geometry can be done directly. The effectivity of this method is illustrated by processing the practical data.
关键词	irregular acquisition geometry migration absorbing layer seismic data
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000178350200012
出版者	SCIENCE CHINA PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/17412
专题	中国科学院数学与系统科学研究院
通讯作者	Wang, YX
作者单位	1.Daqing Petr Inst, Dept Math, Daqing 151400, Peoples R China 2.Chinese Acad Sci, Inst Computat Math & Sci Engn Comp, Beijing 100080, Peoples R China 3.Daqing Petr Inst, Dept Mech Engn, Daqing 151400, Peoples R China
推荐引用方式 GB/T 7714	Wang, YX,Zhang, GQ,Zhou, RF. An absorbing-layer method of 3-D seismic migration in an irregular acquisition geometry[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2002,45(5):700-706.
APA	Wang, YX,Zhang, GQ,&Zhou, RF.(2002).An absorbing-layer method of 3-D seismic migration in an irregular acquisition geometry.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,45(5),700-706.
MLA	Wang, YX,et al."An absorbing-layer method of 3-D seismic migration in an irregular acquisition geometry".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 45.5(2002):700-706.