| 星载SAR差分干涉测量提取汶川地震同震形变场 |
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| 引用本文： | 李震,周建民,谢酬.星载SAR差分干涉测量提取汶川地震同震形变场[J].自然灾害学报,2011(1). |
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| 作者姓名： | 李震 周建民 谢酬 |
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| 作者单位： | 中国科学院对地观测与数字地球科学中心;遥感信息科学国家重点实验室中国科学院遥感应用研究所; |
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| 基金项目： | 中科院方向项目(批准号:kkcx1-yw-01); 国家自然科学基金项目(批准号:40671140) |
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| 摘 要： | 采用合成孔径雷达差分干涉测量技术对2008年5月12日四川汶川地震(Ms=8.0)的形变信息进行了提取,并开展了研究,利用地震前后ALOS/PALSAR数据,进行重复轨道差分干涉处理,得到了震前—震后的干涉条纹图和形变结果图。由雷达视向形变图可知,此次地震造成了隆起形变,最大形变出现在北川—映秀断裂带上,最大雷达视向形变量超过了90 cm,形变范围较大,川西的大部分地方都出现了不同程度的地表形变。结合川西的地质和地型构造情况,根据地震同震形变场的空间分布特征,对形变特征和震源构造进行了分析,发现二者有很好的一致性。
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| 关 键 词： | 差分干涉测量 汶川地震 地震形变 |
Extracting cosesimic deformation of the Wenchuan earthquake with spaceborne D-InSAR |
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| LI Zhen,ZHOU Jian-min,XIE Chou.Extracting cosesimic deformation of the Wenchuan earthquake with spaceborne D-InSAR[J].Journal of Natural Disasters,2011(1). |
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| Authors: | LI Zhen ZHOU Jian-min XIE Chou |
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| Institution: | LI Zhen1,ZHOU Jian-min1,XIE Chou2(1.Center for Earth Observation and Digital Earth,Chinese Academy of Sciences,Beijing 100190,China,2.State Key Laboratory of Remote Sensing Science,Institute of Remote Sensing Application,Chinese Academy of Seiences,Beijing 100101,China) |
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| Abstract: | Differential interferometric synthetic aperture radar(D-InSAR) was introduced to derive the deformation caused by Wenchuan earthquake(Ms=8.0) and the interferogram and the deformation result were obtained using two scenes ALOS/PALSAR data acquired respectively before and after the earthquake with the repeat-pass D-InSAR.From the deformation result in the radar line of sight(LOS) we can know that the Wenchuan earthquake leads to uplifting displacement and the maximum uplifting deformation in LOS is about 90 ... |
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| Keywords: | D-InSAR Wenchuan earthquake earthquake deformation |
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