Near-field seismic localization using Delta T Mapping

doi:10.6038/cjg20170819

CORC > 地质与地球物理研究所 > 中国科学院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

	Near-field seismic localization using Delta T Mapping
	Shi Peng-Cheng 1,2; Wang Yuan 1; You Qing-Yu 1,2
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2017-08-01
卷号	60 期号:8 页码:3119-3132
关键词	Seismic location Difference of arrivals Delta t mapping Gaussian process regression Source-scan algorithm
ISSN号	0001-5733
DOI	10.6038/cjg20170819
文献子类	Article
英文摘要	Near-field seismic localization has important significance and wide applications in the real world, for instance, locating explosions or tracking traffic movements. Those traditional methods designed for far-field scenarios are limited here due to the unknown velocity structures and high accuracy demands. This paper, for the first time, applied the Delta T Mapping (DTM) technique from acoustic emission detection in near-field seismic localization. DTM first needs to construct a mapping of the difference of first arrivals on which the following locating is based. There are two approaches for establishing such model: (1) grid search method: using linear scattered point interpolation to obtain new DTM of higher resolution; (2) statistical locating method: using Gaussian Process Regression to build the mapping from Delta T to positions. The experiment was conducted in an area of 140 mX90 m in a suburb in Beijing. The locating error was 0. 5 similar to 5.1 m. The results showed that DTM is reliable, highly accurate and suitable for real-time use for near-field seismic localization. The cost of learning DTM and analyzing data could be further decreased while obtaining high accurate DTM by switching the sources and receivers. Furthermore, combining source-scan algorithm has certain potential to locate multi-sources.
WOS关键词	EMISSION SOURCE LOCATION ; TIME-DELAY ESTIMATION ; ACOUSTIC-EMISSION ; SIGNAL ; ENVIRONMENTS ; ALGORITHM
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000407093300019
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/61845]
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	You Qing-Yu
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources 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	Shi Peng-Cheng,Wang Yuan,You Qing-Yu. Near-field seismic localization using Delta T Mapping[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2017,60(8):3119-3132.
APA	Shi Peng-Cheng,Wang Yuan,&You Qing-Yu.(2017).Near-field seismic localization using Delta T Mapping.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,60(8),3119-3132.
MLA	Shi Peng-Cheng,et al."Near-field seismic localization using Delta T Mapping".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 60.8(2017):3119-3132.