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| 河北永清MW 4.3地震序列双差定位分析 | |
| 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MW 4.3地震序列双差定位分析[J]. 地震地磁观测与研究, 2019, 41(1): 13-18. DOI: 10.3969/j.issn.1003-3246.2020.01.003 |
| 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 |
| 作者单位： | 1.中国天津 300201 天津市地震局;2.中国石家庄 050000 河北经贸大学 |
| 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） |
| 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。 |
| 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 earthquake sequence 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 earthquake sequence in Hebei Province[J]. Seismological and Geomagnetic Observation and Research, 2019, 41(1): 13-18. DOI: 10.3969/j.issn.1003-3246.2020.01.003 | |
| Authors: | ZHU Bingqing CAO Jingquan TAN Yipei DONG Yibing SUN Luqiang PENG Yanfeng XU Xiaoyuan ZHAO Liming |
| Affiliation: | 1.Tianjin Earthquake Agency, Tianjin 300201, China;2.Hebei University of Economics and Business, Shijiazhuang 050000, China |
| 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:① The 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. ② The 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 profile. This earthquake may rupture from deep to shallow. |
| Keywords: | Yongqing earthquake double difference location focal depth |
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