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Least-squares reverse time migration based on unstructured gird

文献类型：期刊论文

作者Yang Kai1,2; Zhang Jian-Feng1
刊名CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
出版日期2017-03-01
卷号60期号:3页码:1053-1061
关键词Least-squares Reverse Time Migration Unstructured Gird Grid Method Laplacian Filter
ISSN号0001-5733
DOI10.6038/cjg20170318
文献子类Article
英文摘要Compared with conventional reverse time migration, the least-squares reverse time migration can improve image quality by using the inversion-based algorithm. In addition, the accuracy and efficiency of this method mainly depends on the accuracy and efficiency of solving acoustic wave equation. The unstructured gird method describes interfaces more precisely and can use the velocity related adaptive mesh generation algorithm. In this paper, we propose a least squares reverse time migration algorithm based on unstructured gird. The purpose is to combine the advantages of the least-squares algorithm and unstructured gird method, and then to use Laplacian filter with compensation to remove the low-frequency noise in the calculation of gradient. Thus we can accelerate the speed of convergence of the objective function. This method is successfully applied to a simple inclined layered model and the Marmousi model, which demonstrates its efficiency and potential.
WOS关键词HETEROGENEOUS MEDIA ; WAVE ; INVERSION ; ILLUMINATION
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000396386700018
出版者SCIENCE PRESS
源URL[http://ir.iggcas.ac.cn/handle/132A11/53037]  
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
通讯作者Yang Kai
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource 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		 Yang Kai,Zhang Jian-Feng. Least-squares reverse time migration based on unstructured gird[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2017,60(3):1053-1061.
APA Yang Kai,&Zhang Jian-Feng.(2017).Least-squares reverse time migration based on unstructured gird.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,60(3),1053-1061.
MLA Yang Kai,et al."Least-squares reverse time migration based on unstructured gird".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 60.3(2017):1053-1061.

入库方式： OAI收割

来源：地质与地球物理研究所

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