Minimum travel time tree algorithm for seismic ray tracing: improvement in efficiency

doi:10.1088/1742-2132/1/4/001

	Minimum travel time tree algorithm for seismic ray tracing: improvement in efficiency
	Zhao, AH ; Zhang, ZJ ; Teng, JW
刊名	JOURNAL OF GEOPHYSICS AND ENGINEERING
	2004-12-01
卷号	1 期号:4 页码:245-251
关键词	ray tracing travel time computation seismic exploration computational seismology
ISSN号	1742-2132
DOI	10.1088/1742-2132/1/4/001
文献子类	Article
英文摘要	The computational efficiency of the basic minimum travel time tree (MTTT) algorithm for seismic ray tracing is improved by means of dynamically adjusting the pre-defined propagation area of secondary waves according to the spread of seismic waves. The improvement on the MTTT algorithm is achieved explicitly by limiting the calculation of seismic rays and travel times to a small pre-defined propagation area of secondary waves and to the secondary waves from the points around the straight elongation of the incoming ray. Numerical examples verify that a good approximation of travel times and ray paths can be obtained with the improved algorithm using a small pre-defined propagation area of secondary waves even for complex models. Furthermore, the denser a grid coverage a model has, the greater the improvement in computational efficiency the new algorithm makes. The computational efficiency is more obvious for a 3D model than for a 2D one.
WOS关键词	FINITE-DIFFERENCE CALCULATION
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000228577000001
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/79171]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhao, AH
作者单位	1.Chinese State Bur Seismol, Inst Geophys, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhao, AH,Zhang, ZJ,Teng, JW. Minimum travel time tree algorithm for seismic ray tracing: improvement in efficiency[J]. JOURNAL OF GEOPHYSICS AND ENGINEERING,2004,1(4):245-251.
APA	Zhao, AH,Zhang, ZJ,&Teng, JW.(2004).Minimum travel time tree algorithm for seismic ray tracing: improvement in efficiency.JOURNAL OF GEOPHYSICS AND ENGINEERING,1(4),245-251.
MLA	Zhao, AH,et al."Minimum travel time tree algorithm for seismic ray tracing: improvement in efficiency".JOURNAL OF GEOPHYSICS AND ENGINEERING 1.4(2004):245-251.