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| 利用GPS观测资料研究山西断陷带的应变特征 | |
| 引用本文： | 刘瑞春,张贵钢,季灵运.利用GPS观测资料研究山西断陷带的应变特征[J].高原地震,2013,25(1):27-30. |
| 作者姓名： | 刘瑞春 张贵钢 季灵运 |
| 作者单位： | 1. 山西省地震局,山西太原030021 ;太原大陆裂谷动力学国家野外科学观测研究站,山西太原030021 2. 长安大学,陕西西安,710054 3. 中国地震局第二监测中心,陕西西安710054;中国地震局地质研究所,北京100029 |
| 基金项目： | 山西省青年科技研究基金，山西省地震局科研项目 |
| 摘 要： | 利用美国麻省理工学院的GAMIT／GLOBK数据处理软件，计算获得了山西GPS观测网2001—2003年观测点在ITRF2000框架下的运动速率，并扣除了欧亚板块的整体运动。在此基础上，根据距离加权的最小二乘估计法计算了该区在2001-2003年的水平主应变，有效地避免了三角均匀应变场计算方法易受点位分布及划分网格形式的影响。得到的应变率结果显示，在山西断陷带内部，大同和运城盆地拉张较为明显，太原一临汾盆地之间呈现出一定的挤压特征，表明了山西各盆地内部区域应力场的差异以及整体构造的不连续性。 |
| 关 键 词： | GPS 山西断陷带 位移场 主应变 |
RESEARCH ON THE STRAIN CHARACTERISTICS IN SHANXI FAULT SUBSIDENCE ZONE FROM GPS OBSERVATION DATA |
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| LIU Ruichun , ZHANG Guigang , JI Lingyun.RESEARCH ON THE STRAIN CHARACTERISTICS IN SHANXI FAULT SUBSIDENCE ZONE FROM GPS OBSERVATION DATA[J].Plateau Earthquake Research,2013,25(1):27-30. | |
| Authors: | LIU Ruichun ZHANG Guigang JI Lingyun |
| Institution: | 4,5(1.Earthquake Administration of Shanxi Province,Taiyuan 030021,China;2.Continental Rift Valley Dynamics State Observatory of Taiyuan,Shanxi Province,Taiyuan 030021,China; 3.Chang’an University,Shaanxi Province,Xi’an 710054,China;4.Second Crust Monitoring and Application Center,CEA,Shaanxi Province,Xi’an 710054, China;5.Institute of Geology,CEA,Beijing 100029,China) |
| Abstract: | The displacement of Shanxi GPS observation network in 2001-2003 is computed by MIT＇ s GAMIT/GLOBK in ITRF2000 framework, and deduct the whole movement of the Eurasian Plate. On this basis, the horizontal principal strain is voids the affect of points distribution computed by the distance - weighted and grid form in uniform triangular least squares estimation, which astrain calculation method. The acquired strain rate result shows that in Shanxi fault subsidence zone, Datong and Yuncheng basins were tensile obviously, Taiyuan and Linfeng basins displayed some features of compression, which demonstrate the differences of regional stress and the discontinuity of the overall structure in basins of Shanxi. |
| Keywords: | GPS Shanxi fault subsidence zone Displacement Principal strain |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |