Regularizing method with a priori knowledge for seismic impedance inversion

doi:10.3969/j.issn.0001-5733.2009.08.023

	Regularizing method with a priori knowledge for seismic impedance inversion
	Cui Yan 1,2; Wang Yan-Fei 1; Yang Chang-Chun 1
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2009-08-01
卷号	52 期号:8 页码:2135-2141
关键词	Impedance inversion Morozov's discrepancy principle Regularized restarted conjugate gradient method A prior knowledge
ISSN号	0001-5733
DOI	10.3969/j.issn.0001-5733.2009.08.023
文献子类	Article
英文摘要	This paper proposes a regularized restarted conjugate gradient method with a priori knowledge for solving ill-posed problems in impedance inversion. In Inner loop, we use a modified conjugate gradient algorithm and a restarted technique; in outer loop, the Morozov's discrepancy principle is used as a stopping rule. For choice of the regularization parameter, we use a geometric manner. The shortcoming of the traditional conjugate gradient method is that the iterations may be surplus or insufficient. This algorithm can overcome these two shortcomings by controlling the iterations within a reasonable range, so it converges quickly and accurately. A priori knowledge is obtained from the steepest descent method and a non-uniform constraint is considered to impose on the solution. Theoretic simulations are made and compared with the classical conjugate gradient method. Field data applications are performed. It reveals that the proposed algorithm has the advantages of high precision, robustness, fast calculation and practicability.
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000269512600023
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/71748]
专题	中国科学院地质与地球物理研究所
通讯作者	Cui Yan
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cui Yan,Wang Yan-Fei,Yang Chang-Chun. Regularizing method with a priori knowledge for seismic impedance inversion[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2009,52(8):2135-2141.
APA	Cui Yan,Wang Yan-Fei,&Yang Chang-Chun.(2009).Regularizing method with a priori knowledge for seismic impedance inversion.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,52(8),2135-2141.
MLA	Cui Yan,et al."Regularizing method with a priori knowledge for seismic impedance inversion".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 52.8(2009):2135-2141.