| 利用雷达差分干涉测量技术获取汶川MS 8.0地震形变场 |
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| 引用本文： | 董玉森,Ge Lin-lin,Alex Hay-Man Ng,张奎.利用雷达差分干涉测量技术获取汶川MS 8.0地震形变场[J].地质科技情报,2009,28(6). |
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| 作者姓名： | 董玉森 Ge Lin-lin Alex Hay-Man Ng 张奎 |
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| 作者单位： | 1. 中国地质大学地球科学学院,武汉,430074;School of Surveying and Spatial Information System,University of New South Wales,Sydney 2032,Australia;河南理工大学矿山空间信息技术国家测绘局重点实验室,河南 焦作 454003
2. School of Surveying and Spatial Information System,University of New South Wales,Sydney 2032,Australia |
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| 基金项目： | 澳大利亚CRC-SI项目(Project4.09);;中国地质调查局项目“‘5.12’地震灾区次生地质灾害航天遥感应急调查”;;中国地质大学(武汉)优秀青年教师资助项目(CUGQNL200724);;河南理工大学矿山空间信息技术国家测绘局重点实验室开放基金项目(KLM200821) |
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| 摘 要： | 利用ENVISAT/ASAR和ALOS/PALSAR数据,结合两路差分干涉测量技术获得了汶川地震的同震形变信息和震前、震后地面在卫星视线(light of sight,简称LOS)方向上的形变特征。结果表明,汶川地震引起的地面形变范围广,程度大,地震形变沿断层向北北东向扩展,所形成的差分干涉条纹明显。地面的形变特征对于推断断层的性质,研究地震形变和地震发育特征具有重要的参考价值。另外,将同震雷达差分干涉测量的结果与利用USGS发布的汶川地震有限元断层模型(finite fault model)反演的LOS方向的形变进行了对比验证,发现二者在断裂带的上盘具有较好的一致性,但在下盘却有较大的误差。通过不同传感器干涉结果的对比发现,L波段的雷达干涉结果更能够反映汶川大地震在龙门山断裂带附近的地面形变信息。
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| 关 键 词： | 雷达差分干涉测量技术 汶川地震 地面形变 |
SAR Interferometry for Monitoring the Ground Displacement of the Wenchuan MS 8.0 Earthquake |
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| DONG Yu-sen,GE Lin-lin,Hsing-Chung Chang,Alex Hay-Man Ng,ZHANG Kui.SAR Interferometry for Monitoring the Ground Displacement of the Wenchuan MS 8.0 Earthquake[J].Geological Science and Technology Information,2009,28(6). |
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| Authors: | DONG Yu-sen GE Lin-lin Hsing-Chung Chang Alex Hay-Man Ng ZHANG Kui |
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| Institution: | 1.Faculty of Earth Sciences;China University of Geosciences;Wuhan 430074;China;2.School of Surveying and Spatial Information System;University of New South Wales;Sydney 2032;Australia;3.Key Laboratory of Mine Spatial InformationTechnologies of SBSM;Henan Polytechnic University;Jiaozuo Henan 454003;China |
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| Abstract: | Satellite differential SAR interferometry has been widely accepted as a powerful tool to map co-,post-and inter-seismic deformation.In this study,ENVISAT/ASAR and ALOS/PALSAR datasets are used for monitoring the ground displacement of the Wenchuan MS 8.0 earthquake in China with two-pass differential interferometry,respectively.The displacement on light of sight has been archived.Results from interferograms show that the displacement caused by the shock spans along the fault zone in a large area.The charact... |
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| Keywords: | SAR interferometry Wenchuan Earthquake ground displacement |
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