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冰川冻土  2012 

珠穆朗玛峰东绒布冰川厚度测量与地形特征分析

, PP. 1059-1066

Keywords: 珠穆朗玛峰,东绒布冰川,地形特征,冰厚度,冰川槽谷

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Abstract:

冰川地形特征的研究是构建冰川流动模型的基础.根据探地雷达获取的冰川厚度数据(2009年)和1∶5万地形图(1974年),得到沿珠穆朗玛峰东绒布冰川主流线的冰厚度分布以及5条冰川槽谷的形态特征.结果表明沿东绒布冰川主流线的平均表面坡度约为0.08,平均厚度约为190m,最大厚度约为320m(海拔6300m);在1974-2009年间沿冰川主流线冰厚度平均减薄约30m;东绒布冰川表碛覆盖区与白冰区尚未分离,目前很可能是一条停滞冰川,冰川末端位于海拔5540m附近(下游方向);东绒布冰川槽谷形态接近于V型,而不是U型(b指数变化范围约为0.7~1.3).

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