| 用于地震预警的P波震相到时自动拾取 |
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| 引用本文： | 马强,金星,李山有,陈绯雯,廖诗荣,韦永祥.用于地震预警的P波震相到时自动拾取[J].地球物理学报,2013,56(7):2313-2321. |
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| 作者姓名： | 马强 金星 李山有 陈绯雯 廖诗荣 韦永祥 |
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| 作者单位： | 1. 中国地震局工程力学研究所, 哈尔滨 150080;
2. 福建省地震局, 福州 350003 |
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| 基金项目： | 国家科技支撑计划项目课题(2009BAK55B01);地震行业科研专项(200808024);国家自然科学基金青年科学基金项目(40804011)资助 |
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| 摘 要： | P波震相的自动拾取可用于地震预警中地震事件判别和地震定位,是实现基于地震台网地震预警的首要条件.针对地震预警中P波震相拾取的特点,本文发展了一套基于长短时平均(STA/LTA)和池赤准则(AIC)算法的多步骤P波自动拾取技术,应用Delaunay三角剖分提出了一种非几何相关的干扰信号剔除方法,并应用福建省数字地震台网记录对方法进行了验证,目前方法已经用到了福建省地震预警试验系统中.
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| 关 键 词： | 地震预警 P波震相自动拾取 长短时平均 AIC准则 Delaunay三角 |
| 收稿时间： | 2012-04-01 |
Automatic P-arrival detection for earthquake early warning |
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| MA Qiang,JIN Xing,LI Shan-You,CHEN Fei-Wen,LIAO Shi-Rong,WEI Yong-Xiang.Automatic P-arrival detection for earthquake early warning[J].Chinese Journal of Geophysics,2013,56(7):2313-2321. |
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| Authors: | MA Qiang JIN Xing LI Shan-You CHEN Fei-Wen LIAO Shi-Rong WEI Yong-Xiang |
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| Institution: | 1. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China;
2. Earthquake Administration of Fujian Province, Fuzhou 350003, China |
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| Abstract: | Automatic identification of P-arrival can be used for event recognition and earthquake location, and it is the prerequisite for regional Earthquake Early Warning(EEW) system. According to the characteristics of EEW system, a set of automatic P-arrival picking method has been developed. The picking method is based on the Short-Term-Average/Long-Term-Average (STA/LTA) and Akaike Information Criterion (AIC), and an interference signal eliminating method is based on the Delaunay triangulation of a seismic network. The method was tested on real continuous data at Fujian Digital Seismic Network off-line and on-line. |
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| Keywords: | Earthquake early warning Automatic P-arrival detection STA/LTA Akaike Information Criterion Delaunay triangulation |
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