基于RS的林芝-加查段泥石流源地信息提取  

Information Extraction of Debris Flow Source Areas Based on Remote Sensing Images along Linzhi-Jiacha in Tibet

作　　者：王高峰[1,2] 唐川[2] 高幼龙[1] 李为乐[2] 

机构地区：[1]中国地质调查局水文地质环境地质调查中心,河北保定071051 [2]成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都610059

出　　处：《地理空间信息》2012年第3期61-63,4+3,共3页Geospatial Information

基　　金：国土资源部公益性行业科研专项资助项目(201111024)

摘　　要：为研究泥石流灾害对西藏雅鲁藏布江林芝-加查段沿线的影响与危害,基于遥感手段开展了林芝-加查段沿线泥石流源地物源及冰川水文信息特征的提取研究与分析。研究结果表明:林芝-加查段沿线泥石流源地物源分布具有不均匀性;源地冰川分布具有不平衡性;沿线泥石流源地的物源在冰川融水及冰川型泥石流过后更加发育,积累的松散物质更加丰富,导致泥石流源地物源进一步复活并产生大量新物源,从而使沿线泥石流发生频率增高,规模增大。In order to research of the debris flow hazards which can affect and harm in the Linzhi-Jiacha railway along the Yarlung Zangbo River in the Tibet Autonomous Region,we had been used remote sensing to research and analysis the material sources and glacier hydrological information of debris flow.The results of the study indicated that the material sources distribute unevenly,the source of glacier distribution was imbalance.After snow melt and glacier type mudflow,the material sources were more development,the accumulation of the loose material were richer.So debris flow original area can produce the massive new material sources,it can lead debris flow have the characteristics of high frequency and large scale.

关 键 词：西藏 雅鲁藏布江 泥石流 源地 遥感 冰川 

分 类 号：P237[天文地球—摄影测量与遥感]