Segmentally iterative ray tracing in 3-D heterogeneous geological models

doi:10.6038/cjg20131026

	Segmentally iterative ray tracing in 3-D heterogeneous geological models
	Li Fei 1,2; Xu Tao 1; Wu Zhen-Bo 1,2; Zhang Zhong-Jie 1; Teng Ji-Wen 1
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2013-10-01
卷号	56 期号:10 页码:3514-3522
关键词	3D Block modeling Heterogeneous velocity Ray tracing Segmentally iterative
ISSN号	0001-5733
DOI	10.6038/cjg20131026
文献子类	Article
英文摘要	Seismic ray tracing plays a key role in earthquake location, seismic tomography, migration and many other applications. To overcome the difficulty caused by grid-based and layer-based modeling, we describe a 3D complex geologic model as an aggregate of arbitrarily shaped blocks separated by triangulated interfaces. Based on Fermat's principle of stationary travel time, we develop a segmentally iterative ray-tracing (SIRT) method for geological models with generally heterogeneous velocity distribution. The method falls into the bending method category, in which the path points are perturbed by a first-order explicit formula instead of traditional iterative methods. Numerical tests demonstrate that the perturbation scheme of ray tracing is effective in complex 3D heterogeneous block models.
WOS关键词	DISCRETE SMOOTH INTERPOLATION ; FINITE-DIFFERENCE CALCULATION ; WAVE-FRONT CONSTRUCTION ; REFLECTION TRAVEL-TIMES ; SEISMIC-SOUNDING DATA ; VELOCITY STRUCTURE ; CRUSTAL STRUCTURE ; SOUTHEASTERN CHINA ; ISOTROPIC MEDIA ; UPPER-MANTLE
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000326848400026
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86886]
专题	中国科学院地质与地球物理研究所
通讯作者	Li Fei
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li Fei,Xu Tao,Wu Zhen-Bo,et al. Segmentally iterative ray tracing in 3-D heterogeneous geological models[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2013,56(10):3514-3522.
APA	Li Fei,Xu Tao,Wu Zhen-Bo,Zhang Zhong-Jie,&Teng Ji-Wen.(2013).Segmentally iterative ray tracing in 3-D heterogeneous geological models.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,56(10),3514-3522.
MLA	Li Fei,et al."Segmentally iterative ray tracing in 3-D heterogeneous geological models".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 56.10(2013):3514-3522.