| 首都圈东部地区震群序列性质判定 |
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| 引用本文： | 岳晓媛,武安绪,冯刚,马梁.首都圈东部地区震群序列性质判定[J].地震地磁观测与研究,2019,40(4):8-15. |
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| 作者姓名： | 岳晓媛 武安绪 冯刚 马梁 |
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| 作者单位： | 中国北京100080 北京市地震局;中国北京100080 北京市地震局;中国北京100080 北京市地震局;中国北京100080 北京市地震局 |
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| 基金项目： | 中国地震局监测、预测、科研三结合课题（项目编号：CEA-JC/3JH-170203） |
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| 摘 要： | 采用传统方法和数字地震学方法（视应力），对首都圈东部地区2009-2017年发生的震群序列性质进行分析，分析结果表明：①使用传统方法不能确定震群序列性质，可以利用视应力方法进一步分析，该方法能够反映每个震群应力场的变化特征，可以进行异常性质判别；②通过2种方法的对比分析，可以提高震群序列异常性质判定结果的科学性和可信度，为后续地震活动趋势提供有力的参考依据。对2种方法进行震例检验，可知后续地震一般为中等以上地震，在震群（具有异常性质）发生1-7个月后发震，发震位置在震源区附近。
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| 关 键 词： | 首都圈东部 震群序列性质 传统方法 视应力 |
Study on judgement of the characteristics of earthquake swarm sequences in Eastern Capital Circle |
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| Yue Xiaoyuan,Wu Anxu,Feng Gang,Ma Liang.Study on judgement of the characteristics of earthquake swarm sequences in Eastern Capital Circle[J].Seismological and Geomagnetic Observation and Research,2019,40(4):8-15. |
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| Authors: | Yue Xiaoyuan Wu Anxu Feng Gang Ma Liang |
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| Institution: | Beijing Earthquake Agency, Beijing 100080, China |
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| Abstract: | The characteristics of earthquake swarm sequences which occurred in Eastern Capital Circle from 2009 to 2017 were studied through traditional method and apparent stress method. The analysis results show that:①When the traditional method is disable to judge precursory properties of earthquake swarm sequences, we can judge the characteristics of the earthquake swam through the variation characteristics of stress fields in each earthquake swam;②By the comparative analysis of two methods, which can improve scientificity and reliability of the judgement of earthquake swarm properties, it will provide more powerful reference for follow-up seismic activity trend. In this paper, two methods are tested by seismic examples and the results show that the follow earthquakes are moderate strong earthquakes when will happen 1-7 months after the occurrence of earthquakes swarm (abnormal characteristics), which most of them occur near the focal region. |
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| Keywords: | Eastern Capital Circle characteristics of earthquake swarm sequences traditional method apparent stress |
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