[an error occurred while processing this directive] 世界地质 2020, 39(3) 649-655,663 DOI:   10.3969/j.issn.1004-5589.2020.03.014  ISSN: 1004-5589 CN: 22-1111/P

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本文关键词相关文章
微地震
初至
自动拾取
数据处理
本文作者相关文章
李洪丽
张晗
PubMed
Article by Li H
Article by Zhang H
基于长短时均值比法、偏振法和AIC法三种微地震初至拾取方法的对比
李洪丽, 张晗
吉林大学地球探测科学与技术学院, 长春 130026
摘要: 为获得更有效的微地震初至自动拾取方法,笔者分析了3种具有代表性的初至自动拾取方法(长短时均值比(STA/LTA)法、偏振分析法、AIC法)的原理及国内外研究进展,对3种方法在实际数据处理中的应用情况进行比较,讨论每种方法的实用性及在实际数据处理应用中存在的优缺点。在综合3种微地震初至拾取方法的基础上,发展了综合法。实际数据处理结果表明综合法能有效地对振幅弱、信噪比低的微地震信号进行初至拾取,提高微地震初至拾取的准确性。
关键词 微地震   初至   自动拾取   数据处理  
Comparasion of three microseismic first arrival picking methods, based on ratio of short-term average and long-term average, polarization method and AIC method
LI Hong-li, ZHANG Han
College of Geo-exploration Science and Technology, Jilin University, Changchun 130026, China
Abstract: In order to obtain a more effective method of microseismic first arrival automatic picking, the principle of three typical automatic picking method (STA/LTA method, polarization method, AIC method) and research advance are analyzed. The application of each method is compared, and the practicability, advantages and disadvantages of each method in the actual data processing are discussed. On the basis of synthesizing three methods of picking first arrivals of the microseismic, a comprehensive method is developed. The actual data processing results show that the comprehensive method can pick up the first arrivals of the microseismic signals with weak amplitude and low signal-to-noise ratio, and improve the picking accuracy.
Keywords: micro-seismic   first arrival   automatic pick   data processing  
收稿日期 2020-03-10 修回日期 2020-04-27 网络版发布日期  
DOI: 10.3969/j.issn.1004-5589.2020.03.014
基金项目:

深地资源勘查开采重点专项(2017YFC0601301)

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