An advancing glacier in a recessive ice regime: Berlingske Bræ, North-West Greenland
An advancing glacier in a recessive ice regime: Berlingske Bræ, North-West Greenland
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隐性冰区中的前进冰川：格陵兰岛西北部的 Berlingske Bræ
DOI：
10.34194/geusb.v20.4986
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发表时间：
1969
期刊：
影响因子：
--
通讯作者：
D. As
中科院分区：
文献类型：
--
作者：
P. Dawes;D. As
格陵兰正受到前所未有的国际关注，无论是在科学界还是政治界。格陵兰的特点是中心冰盖厚达3.4公里(内陆冰)，无数的冰帽和数百个出口冰川流入周围海洋，格陵兰支撑着世界第二大冰块。分析冰川运动、融化速度和冰向海洋的流失，为评估物质平衡变化提供数据，从而预测全球海平面上升。因此，格陵兰在当前关于气候变化的全球辩论中发挥着核心作用。格陵兰岛西部快速移动的冰川以其壮观的小腿冰产量，例如Weidick&Bennike(2007)回顾的Disko Bugt周围的冰流，总是在广告中宣传今天的动态冰川融化。这往往使格陵兰其他地方静止和前进的冰川所表现的冰的稳定性和扩张黯然失色(MODIS，2009年)。虽然冰川流向大海的加速和锋面位置的退缩很容易归因于大气和海洋条件的变化(全球变暖)，但同样的解释很难用来解释运动历史截然不同的冰川。
Greenland is receiving unprecedented international attention, both in scientific and political circles. Characterised by a central ice sheet up to 3.4 km thick (Inland Ice), numerous ice caps and hundreds of outlet glaciers debouching into the surrounding oceans, Greenland supports the second largest ice mass in the world. Analysis of glacier movements, melt rates and ice loss to the sea, provide data with which to assess mass balance changes and thereby predict global sealevel rise. Thus Greenland plays a central role in the current worldwide debate on climate change. Present-day dynamic ice loss is invariably advertised by the fast moving glaciers of western Greenland with their spectacular calf ice production, such as the ice streams around Disko Bugt reviewed by Weidick & Bennike (2007). This tends to overshadow ice stability and expansion seen in the form of stationary and advancing glaciers elsewhere in Greenland (MODIS 2009). While the seawards acceleration of glacier flow and retreat in frontal positions can be readily attributed to a shift in atmospheric and oceanic conditions (global warming), the same explanation can hardly be used for glaciers with contrasting movement histories.