| 2016年7月19日新疆MS 4.5级地震乌什地震台形变异常 |
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| 引用本文： | 赖爱京,张锦萍,蒋志英,黄帅堂.2016年7月19日新疆MS 4.5级地震乌什地震台形变异常[J].震灾防御技术,2017,12(2):433-440. |
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| 作者姓名： | 赖爱京 张锦萍 蒋志英 黄帅堂 |
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| 作者单位： | 阿克苏中心地震台, 新疆维吾尔自治区阿克苏 843000 |
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| 基金项目： | 新疆维吾尔自治区地震局科学基金（2015206）,中国地震局监测、预测、科研三结合课题（163102） |
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| 摘 要： | 利用乌什台数字化前兆形变观测资料,分析乌什MS 4.5级地震前乌什台水管倾斜仪、洞体应变仪数据变化情况。通过对比分析发现:地震前,洞体应变仪北南分量数据曲线正常,东西分量数据曲线加速拉张,05:14-20:32拉张幅度达到7.40×10-7,7月19日5时至20日16时乌什洞体应变仪东西分量快速拉张了9.20×10-7;7月19日5-19时,水管倾斜仪北南分量数据曲线正常,东西分量数据曲线反向西倾7.13ms,且05:59-06:06、07:36-07:46、18:42-18:56数据掉格,水管倾斜仪异常结束后1小时,在洞体应变仪异常过程中发生了乌什MS 4.5级地震。水管仪东西分量震前反向西倾,洞体应变仪东西分量震前拉张加速,短临异常明显,且2套形变观测震前异常时间同步性较好。
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| 关 键 词： | 乌什MS 4.5地震 水管仪 洞体应变仪 短临异常 |
| 收稿时间： | 2016/8/29 0:00:00 |
Analysis on Seismic Anomalous of Deformation Caused by the Wushi MS 4.5 Earthquake |
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| Lai Aijing,Zhang Jinping,Jiang Zhiying and Huang Shuaitang.Analysis on Seismic Anomalous of Deformation Caused by the Wushi MS 4.5 Earthquake[J].Technology for Earthquake Disaster Prevention,2017,12(2):433-440. |
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| Authors: | Lai Aijing Zhang Jinping Jiang Zhiying and Huang Shuaitang |
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| Institution: | Aksu Central Seismic Station, Aksu 843000, Xinjiang Uyghur Autonomous Region, China |
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| Abstract: | We used Wushi digital precursory deformation observational data to analyze the water tube-tilt and cave strain changes before the Wushi MS 4.5 earthquake. Through comparative analysis we found that before the Wushi MS 4.5 earthquake, the north-south strain component recorded in the Wushi cave instrument is normal, but the east-west component value changes greatly. The amplitude of stretching is 7.40×10-7 from 05:14 to 20:32. From 05:00 to 19:00 on July 19, the east-west component records from the Wushi water-pipe tilt meter is normal and the east-west component value is reverse to westward inclination 7.13ms. Moreover, the recorded data drop out at 05:59 -06:06, 07:36-07:46, and 18:42-18:56. The water pipe inclinometer abnormal was observed after 1 hour, in the process of the body strain gauge anomaly Wushi MS 4.5 earthquake occurred. The EW component of water tube-tilt from Wushi station west-dipping reverse, cave stuff strain tensile EW component rapid tension before the earthquake, short-impending anomalies before the seismogenic, and the two sets of deformation observation of seismic anomalous have a good agreement to each other. |
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| Keywords: | Wushi MS 4 5 earthquake Tube-tilt Cave strain Short-impending anomalies |
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