A robust and accurate traveltime calculation using a frequency-domain two-way wave-equation modeling algorithm

	A robust and accurate traveltime calculation using a frequency-domain two-way wave-equation modeling algorithm
	Qin, YL ; Zhang, ZJ ; Shin, CS
刊名	JOURNAL OF SEISMIC EXPLORATION
	2005-04-01
卷号	13 期号:3 页码:227-245
关键词	Traveltime Calculation Frequency-domain Modeling Parameter Analysis
ISSN号	0963-0651
文献子类	Article
英文摘要	We improve the accuracy and stability of a traveltime calculation method using a frequency-domain modeling algorithm. We perform a parameter analysis to obtain the optimum combination of frequency and damping factor and thus improve the accuracy of traveltime. Then we obtain the empirical formula for our numerical algorithm. Lastly, we propose the adaptive frequency and the adaptive damping factor for an inhomogeneous model to eliminate the distortion in the traveltime contour. Two-dimensional numerical examples verify that the improved algorithm gives a much smaller traveltime error and a better traveltime contour for the complex model. Compared to the other two methods, this algorithm computes traveltime that is close to a directly transmitted wave. We demonstrate our algorithm on 2D IFP Marmousi models, and the numerical results show that our algorithm is a faster traveltime calculation method of a directly transmitted wave for imaging the subsurface and transmission tomography.
WOS关键词	FINITE-DIFFERENCE CALCULATION ; MIGRATION
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	GEOPHYSICAL PRESS
WOS记录号	WOS:000229428300002
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/64926]
专题	中国科学院地质与地球物理研究所
通讯作者	Qin, YL
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Seoul Natl Univ, Sch Civil Urban & Geosyst Engn, Seoul 151742, South Korea
推荐引用方式 GB/T 7714	Qin, YL,Zhang, ZJ,Shin, CS. A robust and accurate traveltime calculation using a frequency-domain two-way wave-equation modeling algorithm[J]. JOURNAL OF SEISMIC EXPLORATION,2005,13(3):227-245.
APA	Qin, YL,Zhang, ZJ,&Shin, CS.(2005).A robust and accurate traveltime calculation using a frequency-domain two-way wave-equation modeling algorithm.JOURNAL OF SEISMIC EXPLORATION,13(3),227-245.
MLA	Qin, YL,et al."A robust and accurate traveltime calculation using a frequency-domain two-way wave-equation modeling algorithm".JOURNAL OF SEISMIC EXPLORATION 13.3(2005):227-245.