| 利用差分干涉雷达测量技术(D-InSAR)提取同震形变场h |
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| 引用本文： | 单新建,马瑾,王长林,柳稼航.利用差分干涉雷达测量技术(D-InSAR)提取同震形变场h[J].地震学报,2002,24(4):413-420. |
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| 作者姓名： | 单新建 马瑾 王长林 柳稼航 |
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| 作者单位： | 1) 中国北京100029中国地震局地质研究所，中国地震局构造物理开放实验室
2) 中国北京100101中国科学院遥感应用研究所 |
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| 基金项目： | 国家自然科学基金(49802027)，国家重点基础研究规划项目(G1998040703)，地震科学联合基金(102096)共同资助. |
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| 摘 要： | 简要介绍了合成孔径雷达干涉测量技术、差分干涉雷达测量技术，并对干涉测量精度进行了简单讨论．以西藏玛尼地区为例，通过三通差分干涉处理，获取了玛尼地震同震形变场.结果表明:形变场长200 km、宽115 km．干涉条纹以北东东向发震断层——玛尔盖茶卡断层为中心分布，且基本与发震断层平行；通过对干涉形变图进行分析，发震断层可分为3段，其中西段长约23 km，中段长约60 km，东段长约26 km，整个发震断层共长110 km；震中附近最大隆起斜距向位移量为162.4 cm，断层西侧最大沉降斜距向位移量为103.6 cm，震中最大地面水平位错为7.96 m．
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| 关 键 词： | 雷达干涉技术& & 玛尼地震& & 同震形变场 |
| 文章编号： | 0253-3782(2002)04-0413-08 |
| 修稿时间： | 2001年4月17日 |
EXTRACTING COSEISMIC DEFORMATION OF THE 1997 MANI EARTHQUAKE WITH DIFFEREN-TIAL INTERFEROMETRIC SAR |
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| Shan Xinjian Ma Jin Wang Changlin Liu Jiahang Institute of Geology & Laboratory of Tectonophysics,China Seismological Bureau,Beijing ,China Institute of Remote Sensing Applications,Chinese Academy of Sciences,Beijing ,China.EXTRACTING COSEISMIC DEFORMATION OF THE 1997 MANI EARTHQUAKE WITH DIFFEREN-TIAL INTERFEROMETRIC SAR[J].Acta Seismologica Sinica,2002,24(4):413-420. |
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| Authors: | Shan Xinjian Ma Jin Wang Changlin Liu Jiahang Institute of Geology & Laboratory of Tectonophysics China Seismological Bureau Beijing China Institute of Remote Sensing Applications Chinese Academy of Sciences Beijing China |
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| Affiliation: | Shan Xinjian1) Ma Jin1) Wang Changlin2) Liu Jiahang1) 1) Institute of Geology & Laboratory of Tectonophysics,China Seismological Bureau,Beijing 100029,China 2) Institute of Remote Sensing Applications,Chinese Academy of Sciences,Beijing 100101,China |
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| Abstract: | Interferometry Synthetic Aperture Radar (InSAR) is a kind of new earth observation technique and great development has been made in the recent ten years. In the paper, InSAR and Differential Interferometric Synthetic Aperture Radar (D-InSAR) are generally introduced; then the factors affecting the data accuracy are primarily discussed. Mani earthquake was selected as an example to obtain the coseismic deformation field with the three-pass differential interferometric processing method. The results show that the coseismic deformation field is about 200 km in length and 115 km in width. The interferometric fringes spread in the area with the NEE-trending seismogenic fault the Margaichaka fault as the center and they are primarily parallel to the fault. Based on the analysis to the interferogram, the seismogenic fault can be divided into three segments. The whole fault is about 110 km and the length of each segment from the west to the east is about 23 km, 60 km and 26 km. The maximum uplifting displacement in the side-looking direction near the seismic center is about 162.4 cm, the maximum subsiding displacement in the side-looking direction in the western part of the fault is about 103.6 cm, and the maximum horizontal surface dislocation near the seismic center is about 7.96 m. |
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| Keywords: | InSAR Mani earthquake coseismic deformation |
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