A wave propagation method in local angle domain

	A wave propagation method in local angle domain
	Gao Jing-Huai ; Zhou Yan-Hui ; Mao Jian ; Chen Wen-Chao ; Wu Ru-Shan ; Li You-Ming
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2007
卷号	50 期号:1 页码:248-259
关键词	one-way propagation Gabor-Daubechies frame inhomogeneous media local angle domain marching algorithm
ISSN号	0001-5733
文献子类	Article
英文摘要	A phase-space (local angle domain) marching algorithm of wave propagation is proposed in the general frame case, based on the wave equation for inhomogeneous media. The approach presents more freedom when choosing frame or orthogonal basis of one-way wave marching algorithm. Employing the Gabor-Daubechies tight frame which does not van, with frequency and depth but has the characteristic of scale-variability, the specific expression of one-way wave propagator and corresponding marching algorithm of wave field are derived. The high-frequency asymptotic expansion of the propagator based on Gabor-Daubechies tight frame is discussed in detail. Consequently the approximate analytic representation of the propagator in the situation of high-frequency and a small step size is obtained and its validity conditions are provided. The results of wave propagation using the accurate propagator and the high-frequency asymptotic one are compared for several heterogeneous models, which demonstrate that the wave fields are almost the same in certain conditions.
WOS关键词	PHASE-SPACE ; EQUATION ; FIELDS
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000244338300031
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/68296]
专题	中国科学院地质与地球物理研究所
通讯作者	Gao Jing-Huai
作者单位	1.Xian Jiaotong Univ, Inst Wave & Informat, Xian 710049, Peoples R China 2.Univ Calif Santa Cruz, Ctr Study Image & Dynam Earth, Modeling & Imaging Lab, Santa Cruz, CA 95064 USA 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Gao Jing-Huai,Zhou Yan-Hui,Mao Jian,et al. A wave propagation method in local angle domain[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2007,50(1):248-259.
APA	Gao Jing-Huai,Zhou Yan-Hui,Mao Jian,Chen Wen-Chao,Wu Ru-Shan,&Li You-Ming.(2007).A wave propagation method in local angle domain.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,50(1),248-259.
MLA	Gao Jing-Huai,et al."A wave propagation method in local angle domain".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 50.1(2007):248-259.