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根据喜马拉雅山珠穆朗玛峰绒布冰川消融资料和同期气温数据,分析了该冰川度日因子时空变化.研究结果显示:绒布冰川度日因子随海拔升高而增加,海拔5 260 m、5 350 m、5 450 m、5 500 m和5 750 m处冰川度日因子平均值分别为3.27 mm·℃-1·d-1、8.21 mm·℃-1·d-1、23.19 mm·℃-1·d-1、46.41 mm·℃-1·d-1和42.05 mm·℃-1·d-1;不同厚度表碛下的冰川度日因子有所差异;但对同一观测点来说,度日因子随时间变化较小;在喜马拉雅山南北坡海拔<5 350 m的地区,冰川度日因子普遍较小(<10.5 mm·℃-1·d-1);而在南北坡海拔>5 350 m的地区,度日因子普遍较大(大部分>15.8 mm·℃-1·d-1),相比南坡,喜马拉雅山北坡冰川度日因子更大.
Based on the Qomolangma glacier melting information and the temperature data of the same period in the Himalayas, the temporal and spatial variations of the daily logarithm of the glacier are analyzed.The results show that the daily logarithm of the velvet glacier increases with the elevation of 5 260 m, 5 350 m, 5 The mean daily solar fate of glaciers at 450 m, 5 500 m and 5 750 m were 3.27 mm · ℃ -1 · d-1, 821 mm · ℃ -1 · d-1, 23.19 mm · ℃ -1 · d- 1,46.41 mm · ℃ -1 · d-1 and 42.05 mm · ℃ -1 · d-1, respectively. However, for the same observation point, the degree-day factor The time scale of the glacier is small (<10.5 mm · ℃ -1 · d-1) in the areas of northern and southern Himalayas at altitudes <350 m, whereas in the areas of the northern and southern slopes> 5 350 m , And the degree-day factor is generally larger (mostly> 15.8 mm · ℃ -1 · d-1). Compared with the southern slope, the glaciometer on the northern slope of the Himalayas has a greater degree of dayness factor.