| 河北永清MW4.3地震序列双差定位分析 |
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| 引用本文： | 朱冰清,曹井泉,谭毅培,董一兵,孙路强,彭研枫,徐小远,赵黎明.河北永清MW4.3地震序列双差定位分析[J].地震地磁观测与研究,2020(1):13-18. |
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| 作者姓名： | 朱冰清 曹井泉 谭毅培 董一兵 孙路强 彭研枫 徐小远 赵黎明 |
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| 作者单位： | 天津市地震局;河北经贸大学 |
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| 基金项目： | 天津市科技计划项目科技重大专项与工程(项目编号:18ZXAQSF00110);河北经贸大学基金项目(项目编号:2018QY08、2018QZ11)。 |
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| 摘 要： | 使用双差定位法对2018年2月12日永清MW 4.3地震及其余震序列进行重新定位,共得到38个重新定位结果.结果显示:①余震序列分布更加集中,地震序列震中呈NE向分布,与河西务断裂带走向基本一致;②地震序列的震源深度主要为20—25 km,北东侧震源较浅,南西侧震源较深,主震位于地震剖面下部,此次地震引起的破裂可能为由深部到浅部.
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| 关 键 词： | 永清地震 双差定位 震源深度 |
Study on double difference location of Yongqing M 4.3 earthquakesequence in Hebei Province |
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| ZHU Bingqing,CAO Jingquan,TAN Yipei,DONG Yibing,SUN Luqiang,PENG Yanfeng,XU Xiaoyuan,ZHAO Liming.Study on double difference location of Yongqing M 4.3 earthquakesequence in Hebei Province[J].Seismological and Geomagnetic Observation and Research,2020(1):13-18. |
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| Authors: | ZHU Bingqing CAO Jingquan TAN Yipei DONG Yibing SUN Luqiang PENG Yanfeng XU Xiaoyuan ZHAO Liming |
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| Institution: | (Tianjin Earthquake Agency,Tianjin 300201,China;Hebei University of Economics and Business,Shijiazhuang 050000,China) |
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| Abstract: | In this article,the relocating of the aftershock sequence of the Yongqing M 4.3 earthquake in Hebei Province was implemented with the double difference relocation method.A total of 38 earthquakes were relocated.The results show that:①The distribution of aftershock sequence is more concentrated.And the epicenter of earthquake sequence is distributed along a NE direction,which is basically consistent with the strike of Hexiwu fault.②The focal depth of the seismic sequence is mainly 20-25 km.The north-east side is shallow and the south-west side is deep.The main shock is located at the lower part of the seismic pro file.This earthquake may rupture from deep to shallow. |
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| Keywords: | Yongqing earthquake double difference location focal depth |
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