| 大震面波应力扰动对2014年四川康定地震的影响 |
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| 引用本文： | 马婷,谭毅培,丁晶.大震面波应力扰动对2014年四川康定地震的影响[J].华北地震科学,2019,37(4):29-33. |
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| 作者姓名： | 马婷 谭毅培 丁晶 |
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| 作者单位： | 天津市地震局中国地震局地震工程综合模拟与韧性抗震重点实验室,天津,300201;天津市地震局中国地震局地震工程综合模拟与韧性抗震重点实验室,天津,300201;天津市地震局中国地震局地震工程综合模拟与韧性抗震重点实验室,天津,300201 |
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| 基金项目： | 国家自然科学基金;地震科技星火计划 |
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| 摘 要： | 在中强地震发生前的临界状态下,发震断层可能在大震面波应力扰动下出现微震活动增强的现象。利用β统计值方法和匹配滤波技术,对2014年11月22日康定M6.3地震震前大震在其主震及前震所在的鲜水河断裂带的动态触发作用进行了分析讨论。结果显示,未检测到由大震面波触发的微震,表明康定地震震前其主震及前震所在区域在大震面波的应力扰动下,未出现明显的微震触发现象;通过微震检测未发现断层积累应力水平较高、即将发生强震的证据。
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| 关 键 词： | 远场动态应力触发 匹配滤波 β统计值 康定地震 鲜水河断裂带 |
Surface Wave Stress Disturbance of Strong Earthquake on the 2014 Sichuan Kangding Earthquake |
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| MA Ting,TAN Yipei,DING Jing.Surface Wave Stress Disturbance of Strong Earthquake on the 2014 Sichuan Kangding Earthquake[J].North China Earthquake Sciences,2019,37(4):29-33. |
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| Authors: | MA Ting TAN Yipei DING Jing |
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| Institution: | (Tianjin Earthquake Agency,Key Laboratory of Earthquake Engineering Simulation and SeismicResilience, China Earthquake Administration,Tianjin 300201, China) |
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| Abstract: | In the critical state before the occurrence of moderate strong earthquakes, the micro-seismicity may increase in the seismogenic fault under the stress disturbance of the large earthquake surface waves. In this paper, we conduct a systematic search of remotely dynamic triggering around the Xianshuihe fault zone that the 2014/11/22 M 6.3 Kangding earthquake and its foreshock occurred in. From the statistical analysis and matched filter technique, we don’t find micro-earthquakes triggered by surface waves of the large earthquake. The results suggest that it doesn’t appear dynamic triggering phenomenon around the main shock and foreshock occurred area before the Kangding earthquake under the stress disturbance of the large earthquake surface waves. There is no evidence for strong earthquake will soon occurred in Kangding area according to micro-earthquake detection. |
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| Keywords: | remotely dynamic triggering matched filter technique β statistical value Kangding earthquake Xianshuihe fault zone |
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