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冰川冻土  2012 

祁连山东段冷龙岭地区宁缠河3号冰川变化研究

, PP. 1031-1036

Keywords: 宁缠河3号冰川,冰川变化,冰川萎缩,祁连山

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Abstract:

2009年7月对祁连山东段冷龙岭地区宁缠河3号冰川进行了野外考察,对冰川周围布设测量控制网,并利用GPS-RTK技术测量了冰川表面高程与面积、末端等信息,同时使用加拿大EKKO型探地雷达测量了冰川厚度.结合1972年航测1973年调绘出版的地形图以及1995年与2009年两景TM影像等资料,分析研究了宁缠河3号冰川自1972年以来的变化.结果表明宁缠河3号冰川近37a以来萎缩严重,冰川末端退缩约6%,面积减小13.1%,冰川体积减少35.3%;冰川主要以减薄的形式在萎缩,冰川平均厚度由1972年的36.8m,减为2009年的27.4m.周边站点气象资料表明,该区域近几十年来出现不同程度的升温,是导致冰川快速萎缩的主要原因.

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