| 新疆伽师地区地应力的GPS损伤模拟研究 |
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| 引用本文： | 张永志,朱桂芝,王琪.新疆伽师地区地应力的GPS损伤模拟研究[J].西北地震学报,2000,22(4):386-389. |
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| 作者姓名： | 张永志 朱桂芝 王琪 |
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| 作者单位： | 1. 中国地震局第二地形变监测中心,陕西,西安,710054
2. 中国地震局地震研究所,湖北,武汉,430071 |
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| 基金项目： | 国家自然科学基金资助课题!(497742 14)，中国地震局“九五”科技攻关项目!(96 913 0 7) |
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| 摘 要： | 采用几何损伤理论和方法推导了地壳存在不同方向和大小的断层时的有效应力的公式 ,讨论了利用几何损伤理论来分析和计算地壳中存在不连续断层的理论和方法 ,同时对中国新疆伽师地区的地应力变化用几何损伤理论和方法结合该地区的GPS资料进行了数值计算研究 ,通过比较计算结果与 1 997年 1月至 1 998年 1 2月发生在该地区的MS ≥ 5 .0地震活动可以看出 ,新疆南部的中强地震活动区主要在应力场变化激烈的地区 .
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| 关 键 词： | 应力 地震活动性 全球定位系统 新疆 损伤理论 |
| 修稿时间： | 1999-05-21 |
ON SIMULATION OF EARTH STRESS IN JIASHI AREA,XINJIANG,BY DAMAGE MECHANICS MODEL WITH GPS DATA |
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| ZHANG Yong-zhi,ZHU Gui-zhi,WANG Qi.ON SIMULATION OF EARTH STRESS IN JIASHI AREA,XINJIANG,BY DAMAGE MECHANICS MODEL WITH GPS DATA[J].Northwestern Seismological Journal,2000,22(4):386-389. |
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| Authors: | ZHANG Yong-zhi ZHU Gui-zhi WANG Qi |
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| Abstract: | The effective stress formula of the earth crust having the faults with different direction and size is deduced by geometry damage theory and method,and the theory and method to analyze and compute the uncontinuous faults in the earth crust by geometry damage theory is discussed.At the same time, the earth stress variation in Jiashi area,Xinjiang,is computed by geometry damage theory with GPS data.Comparing the computed results with M S>5.0 earthquake activities in the region from Jan.1997 to Dec.1998,it is seen that modern strong earthquakes in the south of Xinjiang mainly occurred in the region where the stress field variation is very large. |
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| Keywords: | Stress Seismic activity GPS Xinjiang Damage theory0 |
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