Automatic event detection and event recovery in low SNR microseismic signals based on time-frequency sparseness

doi:10.6038/cjg20140824

	Automatic event detection and event recovery in low SNR microseismic signals based on time-frequency sparseness
	Wang Peng 1,2; Chang Xu 1; Wang Yi-Bo 1; Wang Lu-Chen 1,2; Zhai Hong-Yu 1,2
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2014-08-01
卷号	57 期号:8 页码:2656-2665
关键词	Microseismic event Low signal-to-noise ratio Time-frequency sparseness Event detection Event recovery
ISSN号	0001-5733
DOI	10.6038/cjg20140824
文献子类	Article
英文摘要	Microseismic monitoring is an effective tool for evaluating the fracturing process and its final results. Event detection is the first step of this monitoring. However, for low SNR microseismic monitoring records, it is difficult to obtain satisfactory results using conventional detection methods. According to time-frequency sparsness of microseismic events, the Renyi entropy method is used to measure sparseness of microseismic monitor records. A target function of event detection is created which takes the number of low entropy value traces as thresholding under time-frequency constraint conditions. This method can detect microseismic events and restore clearer microseismic events simultaneously. Tests on synthesis data and real records show that this method has a good performance in processing low-SNR microseismic records.
WOS关键词	S-TRANSFORM
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000341070200024
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86442]
专题	中国科学院地质与地球物理研究所
通讯作者	Wang Peng
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang Peng,Chang Xu,Wang Yi-Bo,et al. Automatic event detection and event recovery in low SNR microseismic signals based on time-frequency sparseness[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2014,57(8):2656-2665.
APA	Wang Peng,Chang Xu,Wang Yi-Bo,Wang Lu-Chen,&Zhai Hong-Yu.(2014).Automatic event detection and event recovery in low SNR microseismic signals based on time-frequency sparseness.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,57(8),2656-2665.
MLA	Wang Peng,et al."Automatic event detection and event recovery in low SNR microseismic signals based on time-frequency sparseness".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 57.8(2014):2656-2665.