| Extracting coseismic deformation of the 1997 Mani earthquake with differential interferometric SAR |
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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： | SHAN Xin-jian1，2) MA Jin1，2) WANG Chang-lin3) LIU Jia-hang1，2) 1) Institute of Geology，China Seismological Bureau，Beijing 100029，China 2) Laboratory of Tectonophysics，China Seismological Bureau，Beijing 100029，China 3) Institute of Remote Sen |
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| 基金项目： | Joint Seismological Science Foundation of China (102096) and State Natural Scientific Foundation of China (40142031，49802027) and State Key Basic Research Development and Programming Project (G1998040703). |
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| 摘 要： | Introduction The development and application of Interferometric Synthetic Aperture Radar (InSAR) have a close relationship with the sensors development of Synthetic Aperture Radar (SAR). The conception of SAR is proposed comparatively to the real aperture radar antenna. It is well known that the longer the antenna is, the higher the observation resolution will be. Just limited by the length of the antenna, the resolution of real aperture radar is generally very low and cannot meet the r…
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| 收稿时间： | 17 April 2001 |
| 修稿时间： | 9 March 2002 |
Extracting coseismic deformation of the 1997 Mani earthquake with differential interferometric SAR |
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| Shan Xin-jian , Ma Jin , Wang Chang-lin and Liu Jia-hang.Extracting coseismic deformation of the 1997 Mani earthquake with differential interferometric SAR[J].Acta Seismologica Sinica(English Edition),2002,15(4):431-438. |
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| Authors: | Shan Xin-jian Ma Jin Wang Chang-lin and Liu Jia-hang |
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| Institution: | 1. Institute of Geology, China Seismological Bureau, Beijing 100029, China;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. The 1997 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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