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Glaciological twins: basally controlled subglacial and supraglacial lakes

机译:冰川双生子:基本控制的冰川下和冰川上湖泊

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摘要

Subglacial lakes beneath ice streams of Antarctica and supraglacial lakes observed on the flanks of the Greenland ice sheet may seem to be unrelated. The former derive their water from energy dissipation associated with basal friction, the latter from atmospherically driven surface melting. However, using numerical models of ice and water flow, it is shown here that they share a common relationship to basal conditions that implies that surface lakes (or depressions that could host lakes under warmer atmospheric conditions) and basal lakes might exist in tandem.
机译:在南极冰流之下的冰下湖和在格陵兰冰盖侧面观察到的冰河上湖似乎无关。前者的水来自与基础摩擦有关的能量耗散,后者的气体来自大气驱动的表面融化。但是,使用冰和水流动的数值模型显示,它们与基础条件有着共同的关系,这意味着地表湖泊(或在较温暖的大气条件下可能会容纳湖泊的洼地)和基础湖泊可能会串联在一起存在。

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