| 多源雷达遥感数据汶川地震灾情应急监测与评价 |
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| 引用本文： | 邵芸,宫华泽,王世昂,张风丽,田维.多源雷达遥感数据汶川地震灾情应急监测与评价[J].遥感学报,2008,12(6). |
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| 作者姓名： | 邵芸 宫华泽 王世昂 张风丽 田维 |
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| 作者单位： | 1. 中国科学院,遥感应用研究所,遥感科学国家重点实验室,北京,100101
2. 中国科学院,遥感应用研究所,遥感科学国家重点实验室,北京,100101;中国科学院,研究生院,北京,100049 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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中国科学院知识创新工程重要方向性项目
，
遥感科学国家重点实验室基金
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| 摘 要： | 合成孔径雷达(SAR)具有全天时、全天候成像能力和图像立体感强的优势,在汶川大地震灾情监测与评估中发挥了不可替代的作用.利用多源多时相高分辨率雷达遥感数据,对汶川地震灾区各城镇和次生灾害进行了快速、系统、连续的监测,并根据雷达图像特征对房屋损毁情况、滑坡和堰塞湖的分布与规模等进行了快速定量评估,建立了相应的解译标志.监测成果及报告呈送了国家各有关部门和救援队伍,为抢险救灾及灾后重建工作提供了详实、可靠的科学依据.
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| 关 键 词： | 汶川地震 房屋损毁 滑坡 堰塞湖 |
Mulit-source SAR Remote Sensing Data for Rapid Response to Wenchuan Earthquake Damage Assessment |
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| SHAO Yun,GONG Hua-ze,WANG Shi-ang,ZHANG Feng-li and TIAN Wei.Mulit-source SAR Remote Sensing Data for Rapid Response to Wenchuan Earthquake Damage Assessment[J].Journal of Remote Sensing,2008,12(6). |
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| Authors: | SHAO Yun GONG Hua-ze WANG Shi-ang ZHANG Feng-li and TIAN Wei |
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| Institution: | State Key Lab of Remote Sensing Sciences, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China;State Key Lab of Remote Sensing Sciences, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China;Graduate School of Chinese Academy of Sciences,Beijing 100049, China;State Key Lab of Remote Sensing Sciences, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China;Graduate School of Chinese Academy of Sciences,Beijing 100049, China;State Key Lab of Remote Sensing Sciences, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China;State Key Lab of Remote Sensing Sciences, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China;Graduate School of Chinese Academy of Sciences,Beijing 100049, China |
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| Abstract: | SyntheticApertureRadar (SAR) has significantadvantages in disastermonitoring thatare allweather, inde-
pendentof illumination mi aging capabilities and strong stereoscopic sense. SAR technology played irreplaceable role in
rapid response toWenchuanEarthquakemonitoring and damage assessment. WenchuanEarthquake generated numerousof
landslides, landslide lakes and dams, aswellasdebris flows. Theirquantity, scale and dmi ension brake historic records.
Landslides buried towns and villages, blocked up river channelswhich inundated villages and heavily destroyed the road
networks andmade the rescuework extremely difficult. The hardship ofrescue effortswasbeyond ofhuman mi agination in
Wenchuan Earthquake. W ith high resolution SAR mi ageswe detecte a greatdealof landslides and landslide lakes. Those
giant catastrophic landslides reach very large size and scale. One of the largest landslideswe detecte has total area of7
km2and fly distance of4 km. They fly from one side of the riverbank to the opposite bank. It ishard to explain theirbe-
havior and scalewith ordinary conceptof landslide. Moving such amountofmaterialneeds tremendous energy. DoesWen-
chuan Earthquake provide such amountof energy? Why doesWenchuan Earthquake generate somany seismic secondary
disasters? Certainly geosciences community needs further research to solve this puzzle.
Themicrowave remote sensing division in Institute ofRemote Sensing Applicationsmade 7 reports on Tangjiashan
landslide and Landslide Lake, Beichuan countywithmulti-temporalSAR mi ages, 7 reports on other landslides and land-
slide lakes, 1 reporton building damage assessment for several counties, includingAnchang town, HuagaiTown, Mianzu
City and LuojiangCity. All the reportswere delivered to central and localgovernment, ministries and rescue teams. This
paper summaries thework thathas been done forWenchuan Earthquake.
This paperpresents the SAR mi age interpretation on building damage assessment, landslide and landslide lakemoni-
toring, especially their characteristics on SAR mi ages. The damaged building normally has no clear texture or shadow in
contrastwith buildings in good conditions. Owing to the good stereoscopic sense ofSAR mi ages,we can identify the back
scar, debris deposit, fly trace and measure the total area and the flying distance of a landslide. W ith continuously ac-
quiredmulti-temporalSAR mi ages, including TerraSAR-X and COSMO-SkyMed satellite SAR mi ages,we can track the
development of a landslide lake such asTangjiashan LandslideLake. Aswater level rising, the small towns such asXuan
Ping, Zhicheng and village ShengKenziare inundated. TheXuan PingTown is finally totalunderwater. Many roads along
the Jian Riverare inundated aswel.l The tailofTangjiashanLandslideLake extends toward upstream gradually, andwid-
ens the riverchannelobviously. All the information extracted and evaluation delivered from SAR mi agesmade greatcontri-
bution to the decisionmaking and rescue action. |
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| Keywords: | SAR |
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