| 张家口—渤海断裂带分段活动性研究 |
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| 引用本文： | 方颖,张晶.张家口—渤海断裂带分段活动性研究[J].地震,2009,29(3). |
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| 作者姓名： | 方颖 张晶 |
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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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| 摘 要： | 利用GPS资料, 用地壳运动强度和大空间尺度变形分析了张家口-渤海断裂带的活动性. 结果表明, 燕山地块与华北平原的地壳运动强度以张-渤带为明显的分界线, 张-渤带以左旋走滑为主. 通过最小二乘配置对GPS资料进行了空间去噪声处理, 并建立球面位错模型, 反演了张-渤带的11条断层, 结果表明: NW向断层以左旋走滑为主;NE向断层中, 活动性最强的是以倾滑为主的沧东断裂. 2001-2004年时段与1999-2001年时段相比, 张-渤带中西段、西段断层的走滑量略有减小, 而其中东段、东段的走滑量有较大程度增大. 这种现象可能与该区域构造应力场有关.
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| 关 键 词： | 张家口-渤海断裂带 地壳运动 断层滑动 |
Study of the Segmentary Activities in the Zhangjiakou-Bohai Fault System |
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| FANG Ying,ZHANG Jing.Study of the Segmentary Activities in the Zhangjiakou-Bohai Fault System[J].Earthquake,2009,29(3). |
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| Authors: | FANG Ying ZHANG Jing |
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| Institution: | FANG Ying,ZHANG Jing(Institute of Earthquake Science,CEA,Beijing 100036,China) |
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| Abstract: | The paper analyzes the crustal movement intensity and large spatial deformation of the Zhangjiakou-Bohai fault system using GPS data.The result shows that the Zhangjiakou-Bohai fault system is an obvious crustal movement intensity boundary between the Yanshan block and Huabei plain,and mostly left-lateral strike-slip.The spatial noises in the data have been weakened by least squares collocation and eleven faults are inversed by a spherical dislocation model.It is concluded that faults in the NW direction ar... |
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| Keywords: | GPS |
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