| 2017-08-09新疆精河Ms6.6地震附近区域相对应变的变化分析 |
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| 引用本文： | 高丽娟,邢喜民,高歌,李尚伟.2017-08-09新疆精河Ms6.6地震附近区域相对应变的变化分析[J].大地测量与地球动力学,2019,39(10):1002-1006. |
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| 作者姓名： | 高丽娟 邢喜民 高歌 李尚伟 |
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| 作者单位： | 新疆维吾尔自治区地震局,乌鲁木齐市科学二街338号,830011;新疆维吾尔自治区地震局,乌鲁木齐市科学二街338号,830011;新疆维吾尔自治区地震局,乌鲁木齐市科学二街338号,830011;新疆维吾尔自治区地震局,乌鲁木齐市科学二街338号,830011 |
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| 基金项目： | 中国地震局青年震情跟踪课题;中国地震局地震科技星火计划;中国地震局“三结合”课题 |
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| 摘 要： | 2017年精河MS6.6地震震前，尼勒克、巴伦台和小泉沟台钻孔应变仪记录到显著的应变变化，经现场落实确认，异常是可靠的。根据这3个台的记录资料计算相对应变的变化，结果表明，地震前最大（小）主应变大小和方向分别出现明显加速和急剧偏转变化。此外还发现，相对应变场异常期间主方向与震源机制解P轴方位较为一致。
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| 关 键 词： | 钻孔应变 相对应变 精河Ms6.6地震 应变方向偏转 |
Relative Stress Field Analysis of Component Drilling Strain Region beforethe Jinghe MS6.6 Earthquake on August 9,2017 |
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| GAO Lijuan,XING Ximin,GAO Ge,LI Shangwei.Relative Stress Field Analysis of Component Drilling Strain Region beforethe Jinghe MS6.6 Earthquake on August 9,2017[J].Journal of Geodesy and Geodynamics,2019,39(10):1002-1006. |
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| Authors: | GAO Lijuan XING Ximin GAO Ge LI Shangwei |
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| Abstract: | Before the Jinghe MS6.6 earthquake,significant strain abnormal changes were recorded at Nilka, Balguntay and Xiaoquangou stations. After ensuring the anomaly in the field several times and through argumentation, we affirm that the anomaly is reliable.The relative strain field is calculated based on the records of these three stations.The results show that there is significant acceleration and deflection change in the maximum (small) principal strain and direction before the earthquake.In addition,it is also found that the principal direction is relatively consistent, with the orientation of the focal mechanism solution P axis during the anomaly of the relative strain field.To a certain extent, it is possible that abnormal changes may be related to earthquakes. |
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| Keywords: | drilling strain relative strain field Jinghe MS6 6 earthquake strain field direction deflection |
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