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| 于田地震同震形变场ALOS干涉雷达观测及初步分析 | |
| 引用本文： | 许丹,姚鑫,陈奇,孙岳,刘远,刘丰敏.于田地震同震形变场ALOS干涉雷达观测及初步分析[J].地质力学学报,2011,17(4):373-380. |
| 作者姓名： | 许丹 姚鑫 陈奇 孙岳 刘远 刘丰敏 |
| 作者单位： | 1. 中国地质大学(北京)工程技术学院,北京100083;中国地质科学院地质力学研究所,北京 100081 2. 中国地质科学院地质力学研究所,北京,100081 3. 中国地质大学(北京)工程技术学院,北京,100083 4. 中国石油集团工程设计有限责任公司岩土工程分公司,北京,100085 |
| 摘 要： | 2008年3月21日发生在新疆于田的7.3级地震是继2001年11月昆仑山口西8.1级地震后的最大一次7级以上地震.地震是构造活动的集中反映,会伴随着较大的地表形变及断裂的明显活动,能够放大构造正常的活动方式,同震变形场是这种放大作用在地表的直观反映,对于认识发震断裂运动性质,研究邻近构造活动性具有重要意义.青藏高原西... |
| 关 键 词： | 于田地震 同震形变场 差分干涉雷达(InSAR)技术 阿尔金断裂 |
| 收稿时间： | 2011/5/7 0:00:00 |
ALOS INSAR COSEISMIC DEFORMATION OF YUTIAN EARTHQUAKE AND INITIAL ANALYSIS FOR GEOLOGY |
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| XU Dan,YAO Xin,CHEN Qi,SUN Yue,LIU Yuan and LIU Feng-min.ALOS INSAR COSEISMIC DEFORMATION OF YUTIAN EARTHQUAKE AND INITIAL ANALYSIS FOR GEOLOGY[J].Journal of Geomechanics,2011,17(4):373-380. | |
| Authors: | XU Dan YAO Xin CHEN Qi SUN Yue LIU Yuan and LIU Feng-min |
| Institution: | 1. College of Engineering Technology, China University of Geosciences, Beijing 100083, China; 2. Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China ; Geotechnical Engineering Sub-company of China Petroleum Engineering Corporation, Beijing 100085, China) |
| Abstract: | A Ms 7.3 scale earthquake occurred in Yutian area, Xinjiang Uygur Autonomous Region, China, on March 21, 2008 is the biggest earthquake after the Ms 8. 1 scale earthquake happened in Kunlun Mountain, November, 2001. Earthquake is concentrated reflection of tectonic activity, it can be accompanied by a large surface deformation and apparent fracture events, it can zoom the normal activities way of construct. Coseismic deformation is the effect directly reflected in the surface, it is very important for understanding of the nature of earthquake fauhing and researching adjacent tectonic activity. In the harsh natural environment of northwestern margin of the Tibetan Plateau, the conventional methods can not carry out timely and effective for the field earthquake coseismic deformation measurement, so the advantages of InSAR technique have be highlighted. This article describes the InSAR observation principle, then gotten Yutian earthquake Co-seismic InSAR deformation field by ALOS PALSAR radar data, and presents geological results： Yutian Ms 7.3 earthquake macroscopic epicenter is located in the two north-south branches of Kangxiwar Fault southeast （Large Tamarisk Fault and Mousse Hill Fault） and the three branches of the triangle intersection which in Ahyn Tagh Fault southwest; Yutian earthquake triggered a coseismic surface rupture which in Ahyn Tagh Fault NS-trending branch, and the length of the rupture is 25.6 km; It is speculation that Yutian fault focal mechanism solutions is the normal fault under the deformed image of the interference radar, faults incline to west, the maximum range of motion on the plate over 200 cm; The tectonic stress around the two big faults intersection where Yutian earthquake occurred is mainly press in north and south direction. |
| Keywords: | Yutian earthquake coseismic deformation InSAR Altyn Tagh Fault |
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