Converted-wave pre-stack time migration in volcanic area

	Converted-wave pre-stack time migration in volcanic area
	Xie Fei; Chang Xu; Liu Yi-Ke
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2008-11-01
卷号	51 期号:6 页码:1899-1908
关键词	OBC Pre-stack time migration (PSTM) Common Converted Point (CCP) Common Asymptotic Conversion Point (CACP) Velocity scanning V(p)/V(s) scanning Volcanic
ISSN号	0001-5733
文献子类	Article
英文摘要	How to get exact common converted points is a key problem in processing reflection seismic converted wave data. Using pre-stack time migration technology (PSTM), we can exactly image the converted waves on the true reflection points and avoid sorting common converted point (CCP) gathers. In this paper, we research the imaging problems beneath volcanic area. We sort common asymptotic conversion point (CACP) gathers and perform velocity analysis to establish the initial velocity which will be used in PSTM. By scanning migration velocity and V(p)/V(s), we get the optimum migration velocity and V(p)/V(s). Using real data from a seismic exploration, we achieved the migration sections of converted wave beneath volcanic area, and it is proved that the method is effective for computing common asymptotic conversion point and pre-stack time migration.
WOS关键词	TRANSVERSELY ISOTROPIC MEDIA ; ANISOTROPIC MEDIA ; VELOCITY ANALYSIS ; MOVEOUT
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000261313500033
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/70046]
专题	中国科学院地质与地球物理研究所
通讯作者	Xie Fei
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Xie Fei,Chang Xu,Liu Yi-Ke. Converted-wave pre-stack time migration in volcanic area[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2008,51(6):1899-1908.
APA	Xie Fei,Chang Xu,&Liu Yi-Ke.(2008).Converted-wave pre-stack time migration in volcanic area.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,51(6),1899-1908.
MLA	Xie Fei,et al."Converted-wave pre-stack time migration in volcanic area".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 51.6(2008):1899-1908.