| 川滇菱形块体边界的现今地壳形变 |
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| 引用本文： | 吕弋培,廖华,苏琴,王兰.川滇菱形块体边界的现今地壳形变[J].中国地震,2002,18(1):28-37. |
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| 作者姓名： | 吕弋培 廖华 苏琴 王兰 |
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| 作者单位： | 1. 中国,成都,610041四川省地震局
2. 中国四川,雅安,625000,四川省地震局地震测量队 |
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| 基金项目： | 国家重点基础研究发展规划项目《大陆强震机理与预测》95 130 5 0 5子课题经费的资助 |
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| 摘 要： | 依据川滇菱形块体边界带上所有跨断层测量资料，分析了各场地所处断裂的近期形变特征，结果表明；川滇菱形块体北段形变活动逐渐减弱，南段逐渐加强，各条断裂分别显示出不同的变形特征；菱形块体的现今水平形变以左旋走滑运动为主，垂直形变速度较低，且呈上盘抬升与下降交替出现的运动特征，部分场地的形变异常变化与其邻近的地震活动密切相关。
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| 关 键 词： | 川滇菱形块体 地壳形变 地震 跨断层测量 |
| 文章编号： | 1001-4683(2002)01-0028-10 |
The Recent Crustal Deformation in Sichuan-Yunnan Rhombic Block Boundary |
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| Abstract: | Based on the data of across-fault measurement in Sichuan-Yunnan rhombic block boundary, analysed the recent deformation character on each fault. The results show that:the rate of the crustal deformation is slowdown on northern segment and increase on southern segmeut of the rhombic block,and display the different deformation characters on each fault.The left-lateral strike-slip movement is the main horizontal deformation,the rate of the vertical deformation is less than horizontal deformation,and showed the character that fault hanging wall uplift alternates with down.The anomaly changes of the crustal deformation on some sites are close correlative with the earthquakes near the sites. |
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| Keywords: | Sichuan-Yunnan rhombic block Crustal deformation earthquake Across-fault measurement |
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