Studies on iterative algorithms for modeling of frequency-domain wave equation based on multi-grid precondition

doi:10.6038/cjg20150325

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	Studies on iterative algorithms for modeling of frequency-domain wave equation based on multi-grid precondition
	Cao Jian 1,2; Chen Jing-Bo 1; Cao Shu-Hong 1,2
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2015-03-01
卷号	58 期号:3 页码:1002-1012
关键词	Multi-grid method Relaxation factor Local mode analysis Average-derivative optimal scheme
DOI	10.6038/cjg20150325
文献子类	Article
英文摘要	Frequency-domain full waveform inversion (FWI) is an important method for seismic imaging, and frequency-domain modeling is the basis of frequency-domain FWI. For large-scale problems, the LU-decomposition-based direct method is no longer applicable due to limitations of storage and computational time. Instead, iterative methods are employed. The bi-conjugate-gradient-stabilized method, which is based on multi-grid precondition, is an important iterative method. The preconditioner based on a heavily damped wave equation is approximately solved with one multi-grid cycle. The multi-grid method is implemented with a weighted Jacobi smoothing, a standard full-weighting coarsening, a linear interpolation, and a matrix-free implementation. To make it convergent for complex model, local model analysis is used to obtain the relaxation factor in the implementation of weighted Jacobi smoothing.
WOS关键词	FINITE-DIFFERENCES ; FORM INVERSION ; SCALAR ; DIFFERENCE ; SOLVER ; SPACE
WOS研究方向	Geochemistry & Geophysics
语种	英语
WOS记录号	WOS:000352185700025
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62586]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cao Jian,Chen Jing-Bo,Cao Shu-Hong. Studies on iterative algorithms for modeling of frequency-domain wave equation based on multi-grid precondition[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2015,58(3):1002-1012.
APA	Cao Jian,Chen Jing-Bo,&Cao Shu-Hong.(2015).Studies on iterative algorithms for modeling of frequency-domain wave equation based on multi-grid precondition.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,58(3),1002-1012.
MLA	Cao Jian,et al."Studies on iterative algorithms for modeling of frequency-domain wave equation based on multi-grid precondition".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 58.3(2015):1002-1012.