| 峰度和AIC方法在区域地震事件和直达P波初动自动识别方面的应用 |
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| 引用本文： | 赵大鹏,刘希强,李红,周彦文.峰度和AIC方法在区域地震事件和直达P波初动自动识别方面的应用[J].地震研究,2012,35(2):220-225,295. |
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| 作者姓名： | 赵大鹏 刘希强 李红 周彦文 |
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| 作者单位： | 1. 中国地震局兰州地震研究所,甘肃兰州,730000
2. 山东地震局,山东济南,250014 |
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| 基金项目： | 国家科技支撑计划课题，中国地震局地震科技星火计划攻关项目 |
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| 摘 要： | 提出了一种基于直达P波信号的峰度和Kurtosis-AIC方法进行区域地震事件实时检测和直达P波初动精细识别的新方法,并应用于山东地震台网记录的地震波资料处理.结果表明:(1)应用峰度方法能够有效识别出地震事件,可有效减低地震事件的错误报警率和漏报率;(2)与人工识别震相到时的结果相比,根据Kurtosis-AIC震相自动识别方法得到的震相到时的平均绝对值误差为(0.09±0.08)s。
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| 关 键 词： | 峰度方法 Kurtosis-AIC方法 地震事件识别 震相识别 |
Detection of Regional Seismic Events by Kurtosis Method and Automatic Identification of Direct P-wave First Motion by Kurtosis-AIC Method |
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| ZHAO Da-peng
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LIU Xi-qiang
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LI Hong
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ZHOU Yan-wen.Detection of Regional Seismic Events by Kurtosis Method and Automatic Identification of Direct P-wave First Motion by Kurtosis-AIC Method[J].Journal of Seismological Research,2012,35(2):220-225,295. |
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| Authors: | ZHAO Da-peng LIU Xi-qiang LI Hong ZHOU Yan-wen |
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| Institution: | 1.Lanzhou Institute of Seismology,CEA,Lanzhou 73000,Gansu,China)(2.Earthquake Administration of Shandong Province,Jinan 250014,Shandong,China) |
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| Abstract: | Basing on Kurtosis-AIC and kurtosis methods of P-wave signal,we put forward a new method for real-time detection of regional earthquake event and automatic identification of direct P-wave first motion and apply it to process seismic data recorded by Shandong Seismic Network.The results show as follows:(1)The kurtosis method effectively detect earthquake events,and may effectively reduce false alarm and missing report rates;(2)Compared with phase arrival time results in manual identification,average absolute error of phase arrival time in automatic identification based on Kurtosis-AIC method is(0.09±0.08)s. |
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| Keywords: | kurtosis method Kurtosis-AIC method earthquake identification phase identification |
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