| 首都圈跨断层形变反映的断层活动方式及其成因探讨 |
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| 引用本文： | 曹建玲,张晶,王辉,方颖.首都圈跨断层形变反映的断层活动方式及其成因探讨[J].地震,2011,31(4):77-85. |
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| 作者姓名： | 曹建玲 张晶 王辉 方颖 |
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| 作者单位： | 中国地震局地震预测研究所, 北京 100036 |
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| 基金项目： | 科技部国际合作项目(2010DFB20190); 中国地震局地震预测研究所基本科研业务费专项(02092431)资助 |
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| 摘 要： | 本文深入分析了首都圈10个跨断层形变场地的流动观测资料, 计算了断层水平滑动量。 结果表明, 首都圈断层形变反映的断层活动非常复杂。 其中: NW走向的施庄断裂左旋滑动量与时间呈线性关系, 在观测期内左旋滑动速率约为0.08 mm/a; NW走向的墙子路断裂观测期内以左旋滑动为主, 但水平滑动量较施庄断裂小; NE走向的断层在观测期内的活动方式多以左旋滑动为主, 水平滑动量随时间无明显变化规律。 在对断层活动观测结果详细分析的基础上, 利用平面弹性有限元模型对首都圈的断层活动进行了模拟研究, 认为该地区主要受张家口—渤海构造带左旋剪切的控制, 且不同走向活动断层以左旋走滑为主。
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| 关 键 词： | 跨断层观测 断层活动 数值模拟 首都圈 |
| 收稿时间： | 2011-06-14 |
| 修稿时间： | 2011-07-25 |
Fault Activities and Their Geodynamic Cause Derived from Cross-fault Observation in the Capital Region of China |
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| CAO Jian-ling,ZHANG Jing,WANG Hui,FANG Yin.Fault Activities and Their Geodynamic Cause Derived from Cross-fault Observation in the Capital Region of China[J].Earthquake,2011,31(4):77-85. |
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| Authors: | CAO Jian-ling ZHANG Jing WANG Hui FANG Yin |
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| Institution: | Institute of Earthquake Science, CEA, Beijing 100036, China |
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| Abstract: | Temporary cross-fault observation data in the past tens years in the capital region of China is studied in the paper.Distribution of fault strike-slips indicates the complexity of fault activities in the region.Left-lateral strike-slip of the Shizhuang fault,that trending northwest,is positively correlated with time.The mean left-lateral strike-slip rate on the fault is about 0.08 mm/a during the observing period.Left-lateral strike-slip of the Qiangzhilu fault,that is also trending northwest,is less than t... |
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| Keywords: | Fault activity Cross-fault observation numerical simulation Capital region |
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