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| 川滇地区现今块体水平运动变形特征分析 | |
| 引用本文： | 张晓亮,江在森,王双绪,陈兵,黄国柱. 川滇地区现今块体水平运动变形特征分析[J]. 地震研究, 2005, 28(3): 262-267 |
| 作者姓名： | 张晓亮 江在森 王双绪 陈兵 黄国柱 |
| 作者单位： | 1. 中国地震局第二监测中心,西安,710054 2. 中国地震局分析预报中心,北京,100036 3. 广东省地质勘察局七零三地质大队,广州,516008 |
| 基金项目： | 地震科学联合基金;中国地震局科研项目 |
| 摘 要： | 依据川滇地区1991，1999和2001年GPS测量数据，利用DDA正分析基本原理，结合现有的地质资料，对该地区近年来的水平构造运动特征进行了模拟分析，认为川滇地区水平运动整体速率在1999～2001年期间明显减弱；川滇决体主压应变以顺时针旋转为主，方向为SE—SEE；其南部是运动变形相对剧烈、易于积累能量的区域；未来一两年内，该地区地震活动水平不会太高。 |
| 关 键 词： | DDA正分析 GPS观测速率 水平运动变形 差异运动 川滇地区 |
| 文章编号： | 1000-0666-(2005)03-0262-06 |
| 修稿时间： | 2004-07-27 |
Preliminary Research on Present Horizontal Block Motion and Deformation Features in Sichuan-Yunnan Area |
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| ZHANG Xiao-liang,JIANG Zai-sen,WANG Shuang-xu,CHEN Bing,HUANG Guo-zhu. Preliminary Research on Present Horizontal Block Motion and Deformation Features in Sichuan-Yunnan Area[J]. Journal of Seismological Research, 2005, 28(3): 262-267 | |
| Authors: | ZHANG Xiao-liang JIANG Zai-sen WANG Shuang-xu CHEN Bing HUANG Guo-zhu |
| Abstract: | On the basis of the GPS observation records in 1991, 1999 and 2001 in the Sichuan-Yunnan area and present related geological data, we simulated and analyzed the horizontal tectonic motion and deformation features of this area according to the principle of discontinuous deformation positive analysis. The result shows: the whole horizontal velocity field decreased obviously in 1999-2001 in the area; the Sichuan-Yunnan block rotates clockwise, and the SE-SSE is the main direction of main compression strain; the motion and deformation are comparatively strong in the south part of the Sichuan-Yunnan lozenge block, which is of advantage to accumulate energy; infuture one or two years, the seismic activity level in the area will not be high. |
| Keywords: | discontinuous deformation positive analysis GPS observation velocity horizontal motion and deformation difference motion Sichuan-Yunnan area |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |