| 汶川地震地表变形特征 |
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| 引用本文： | 姚大全,张有林,王行舟,陈安国,郑颖平,李光.汶川地震地表变形特征[J].自然灾害学报,2011(6). |
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| 作者姓名： | 姚大全 张有林 王行舟 陈安国 郑颖平 李光 |
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| 作者单位： | 安徽省地震局; |
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| 基金项目： | 地震行业科研专项(2008419064); 安徽省科技攻关计划项目(08010302204) |
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| 摘 要： | 汶川地震地表变形特征丰富多彩。在震后40天自北至南对地震地表变形现象进行了为期10天的专题考察和分析,对北川、擂鼓、汉旺、蓥华、白鹿、小鱼洞、虹口和映秀等8个断裂出露部位进行了重点剖析。结果表明,不同侧面,不同级次的现象均显示出统一的变形变位图案,但具体而言它们比理论模型、规例要复杂得多。它们具体表现为:沿汶川地震断裂面推挤形成隆起,产生纵向、横向裂隙;推挤前缘冲断塌落,形成逆断型崩积楔;多方向挤压、或引张,显示同一应力作用下变形组合的复杂性。这些均不同程度地丰富了现有的应力作用理论。
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| 关 键 词： | 汶川地震 地表变形 挤压 引张 |
Characters of surface deformation in Wenchuan earthquake |
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| YAO Da-quan,ZHANG You-lin,WANG Xing-zhou,CHEN An-guo,ZHENG Ying-ping,LI Guang.Characters of surface deformation in Wenchuan earthquake[J].Journal of Natural Disasters,2011(6). |
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| Authors: | YAO Da-quan ZHANG You-lin WANG Xing-zhou CHEN An-guo ZHENG Ying-ping LI Guang |
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| Institution: | YAO Da-quan,ZHANG You-lin,WANG Xing-zhou,CHEN An-guo,ZHENG Ying-ping,LI Guang (Seismological Administration of Anhui Province,Hefei 230031,China) |
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| Abstract: | The earth's surface deformation characters of Wenchuan earthquake are rich and colorful.After 40 days from the earthquake occurrence,the authors put through a special subject investigation and analysis of the earth's surface deformation phenomena from the north the south,and anatomized emphatically the 8 fault crop-out such as,Beichuan,Leigu,Hanwang,Yinghua,Bailu,Xiaoyudong,Hongkou and Yingxiu.The results show an uniform deformation and dislocation pattern for different sides and grades phenomena,but the si... |
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| Keywords: | Wenchuan earthquake surface deformation extrusion tension |
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