汶川县地震次生山地地质灾害遥感调查
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摘要
5.12汶川大地震瞬间释放巨大的能量,致使山体破碎,河流变迁,极大的改变了震区的地貌和地表景观,形成了崩塌、滑坡、泥石流等一系列次生山地地质灾害,对人民群众的生命财产和社会经济的发展形成了严重威胁。采用传统实地调查山地地质灾害分布状况的方法困难很大,航空遥感技术可以宏观、全面、精确、及时地获取地质灾害相关信息,及时采取应急措施预防灾害的进一步发生。综合利用不同时相、不同传感器的影像对汶川县地震次生山地地质灾害进行监测,很短时间内全面掌握了汶川境内的崩塌、滑坡、泥石流、堰塞点的分布情况,利用先进的RS、GIS技术,在DEM的基础上,结合地质信息,通过水系流域的划分,探讨了地震地质灾害的特点和分布规律,为预防预警次生山地地质灾害提供了新的思路和方法。
5.12 Wenchuan earthquake release enormous energy instantaneously, resulting Mountain broken, the river changes. Greatly changing topography and landscape in the seismic area of the surface. Formed a series of secondary landslide, landslides, debris flows, and other mountainous geological disasters. It is a serious threat to people's lives and property and socio-economic development.It is very difficult to use traditional field survey methods, aviation remote sensing technology can macro, comprehensive, accurate and timely access to information related to mountainous geological disasters to take timely emergency measures to prevent further disasters occur. In this paper, we comprehensive utilize of different time, different image sensor on the geological disasters in Wenchuan County post-earthquake monitoring, in a very short time fully grasped distribution of the collapse, landslides, debris flows, daming point. Using of advanced RS and GIS technology with DEM and geological information, through the delineation of river basin, discuss the characteristics and distribute on mountainous geological disasters in the earthquake, has provided new ideas and methods for the early warning prevention of secondary mountainous geological disasters.
5.12 Wenchuan earthquake release enormous energy instantaneously, resulting Mountain broken, the river changes. Greatly changing topography and landscape in the seismic area of the surface. Formed a series of secondary landslide, landslides, debris flows, and other mountainous geological disasters. It is a serious threat to people's lives and property and socio-economic development.It is very difficult to use traditional field survey methods, aviation remote sensing technology can macro, comprehensive, accurate and timely access to information related to mountainous geological disasters to take timely emergency measures to prevent further disasters occur. In this paper, we comprehensive utilize of different time, different image sensor on the geological disasters in Wenchuan County post-earthquake monitoring, in a very short time fully grasped distribution of the collapse, landslides, debris flows, daming point. Using of advanced RS and GIS technology with DEM and geological information, through the delineation of river basin, discuss the characteristics and distribute on mountainous geological disasters in the earthquake, has provided new ideas and methods for the early warning prevention of secondary mountainous geological disasters.
引文
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[3] The Committee of Prevention and Governance of landslides and col- lapses.The Engineering Manual of Prevention and Governance of Iandslides and Collapses[M]. Beijing:Earthquake Press,2005.[滑 坡与崩塌事故防治编委会.滑坡与崩塌事故防治工程手册 [M].地震出版社,2005.]
[4] Wang Ruixue.Application of remote sensing photograph to geological disasters investigation[J].Journal ofKunming University ofScience and Technology, 1997,(4):17 ~21 [王瑞雪.遥感图像在地质 灾害调查中的应用[J].昆明理工大学学报,1997,(4):17 ~21]
[5] Lin Maobing, Yu Guang.Principal features of maowen ductile fault zone (Wenchuan Gengda section [J].Journal ofChengdu University ofTechnology,1997,24(2):40 ~47 [林茂炳,俞广.茂汶断裂 带(耿达—汶川段)的基本特征[J].成都理工学院学报,1997, 24(2):40 ~47]
[6] Tang Guoan, Yang Xin.ArcGis GIS Spatial Analysis Experimenta- tion Tutorial[M].Beijing: Science Press,2006:443 [汤国安,杨昕 .ArcGis地理信息系统空间分析试验教程[M].北京:科学出版 社,2006:443]
[2] Liu Jun,Jia Ming.Talking about the application of Remote Sensing technology in geologic disaster investigation[J].Sci/tech Information Development &Economy, 2005,(5):170 ~171 [刘? ,贾明.浅谈遥感技术在地质灾害调查中的应用[J].科技情报开发与经 济, 2005,(5):170 ~171]
[3] The Committee of Prevention and Governance of landslides and col- lapses.The Engineering Manual of Prevention and Governance of Iandslides and Collapses[M]. Beijing:Earthquake Press,2005.[滑 坡与崩塌事故防治编委会.滑坡与崩塌事故防治工程手册 [M].地震出版社,2005.]
[4] Wang Ruixue.Application of remote sensing photograph to geological disasters investigation[J].Journal ofKunming University ofScience and Technology, 1997,(4):17 ~21 [王瑞雪.遥感图像在地质 灾害调查中的应用[J].昆明理工大学学报,1997,(4):17 ~21]
[5] Lin Maobing, Yu Guang.Principal features of maowen ductile fault zone (Wenchuan Gengda section [J].Journal ofChengdu University ofTechnology,1997,24(2):40 ~47 [林茂炳,俞广.茂汶断裂 带(耿达—汶川段)的基本特征[J].成都理工学院学报,1997, 24(2):40 ~47]
[6] Tang Guoan, Yang Xin.ArcGis GIS Spatial Analysis Experimenta- tion Tutorial[M].Beijing: Science Press,2006:443 [汤国安,杨昕 .ArcGis地理信息系统空间分析试验教程[M].北京:科学出版 社,2006:443]
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