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首页> 外文期刊>Annual review of marine science >The Dynamics of Greenland's Glacial Fjords and Their Role in Climate
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The Dynamics of Greenland's Glacial Fjords and Their Role in Climate

机译：格陵兰冰川峡湾的动力学及其在气候中的作用

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Rapid mass loss from the Greenland Ice Sheet has sparked interest in its glacial fjords for two main reasons: Increased submarine melting of glaciers terminating in fjords is a plausible trigger for glacier retreat, and the anomalous freshwater discharged from Greenland is transformed by fjord processes before being released into the large-scale ocean. Knowledge of the fjords' dynamics is thus key to understanding ice sheet variability and its impact on climate. Although Greenland's fjords share some commonalities with other fjords, their deep sills and deeply grounded glaciers, the presence of Atlantic and Polar Waters on the continental shelves outside the fjords' mouths, and the seasonal discharge at depth of large amounts of surface melt make them unique systems that do not fit existing paradigms. Major gaps in understanding include the interaction of the buoyancy-driven circulation (forced by the glacier) and shelf-driven circulation, and the dynamics in the near-ice zone. These must be addressed before appropriate forcing conditions can be supplied to ice sheet and ocean/climate models.
机译：格陵兰冰原的迅速质量损失引起了人们对其冰川峡湾的兴趣，这主要有两个原因：终止于峡湾的冰川的海底融化增加是冰川退缩的可能诱因，从格陵兰岛排放的异常淡水在经过峡湾改造后才被融化释放到大洋中。因此，了解峡湾的动态是了解冰盖变异性及其对气候影响的关键。尽管格陵兰岛的峡湾与其他峡湾有一些共性，但它们的深基岩和深深的冰川，峡湾口外大陆架上存在大西洋和极地水域，以及大量表面融化深度的季节性排放使它们与众不同不适合现有范例的系统。在理解上的主要差距包括浮力驱动的循环（由冰川推动）和陆架驱动的循环之间的相互作用，以及近冰区的动力学。必须先解决这些问题，然后才能向冰盖和海洋/气候模型提供适当的强迫条件。

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