Submarine Meltwater From Nioghalvfjerdsbræ (79 North Glacier), Northeast Greenland
Submarine Meltwater From Nioghalvfjerdsbræ (79 North Glacier), Northeast Greenland
复制标题
来自格陵兰岛东北部 Nioghalvfjerdsbræ（北冰川 79 号）的潜艇融水
DOI：
--
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
J. Sültenfuss
中科院分区：
文献类型：
--
作者：
O. Huhn;M. Rhein;T. Kanzow;J. Schaffer;J. Sültenfuss
格陵兰冰盖（GrIS）在气候变暖的情况下面临加速融化。这也影响到东北格陵兰冰流（NEGIS）最大的海洋终端出口冰川，Nioghalvfjerdsbranch（79 North Glacier，79 NG）。在其浮冰舌下方的空腔中，流入的温暖而含盐的大西洋水的热量融化了底部的冰，而更冷、更新鲜的流出物则流向大陆架断裂处，并可能与东格陵兰海流（EGC）一起向南输出。然而，来自海底融化的淡水很难单独通过盐度与其他淡水来源区分开来。为了识别和量化东北格陵兰大陆架海底融水的分布，我们使用氦（He）和氖（Ne）观测直接在79 NG的产犊前沿，在东北格陵兰大陆架，并在弗拉姆海峡在R/V POLARSTERN探险期间在2016年夏天。这些示踪剂独特地识别海底融水（SMW），并允许量化其分数。SMW存在于大陆架上，但从79 NG产犊前缘的1.8%稀释到弗拉姆海峡的不显著。法定最低工资
revealed the Abstract The Greenland Ice Sheet (GrIS) faces accelerated melting under a warming climate. This also affects the largest marine-terminating outlet glacier of the Northeast Greenland Ice Stream (NEGIS), the Nioghalvfjerdsbræ (79 North Glacier, 79NG). In the cavity below its floating ice tongue, the heat of inflowing warm and saline Atlantic Water melts the ice at the base, and colder and fresher outflow is exported toward the shelf break and presumably south with the East Greenland Current (EGC). However, freshwater from submarine melting is hardly distinguishable from other freshwater sources by salinity alone. To identify and to quantify the distribution of submarine meltwater on the Northeast Greenland Shelf, we use helium (He) and neon (Ne) observations obtained directly at the calving front of the 79NG, on the Northeast Greenland Shelf, and in Fram Strait during an expedition aboard R/V POLARSTERN in summer 2016. These tracers uniquely identify submarine meltwater (SMW) and allow quantifying its fraction. SMW is present on the shelf but dilutes from 1.8% at the 79NG calving front to nonsignificant in Fram Strait. The SMW
影响因子：
18.3
作者：
Boening, Claus W.;Behrens, Erik;Bamber, Jonathan L.
通讯作者：
Bamber, Jonathan L.
影响因子：
16.6
作者：
Mayer C;Schaffer J;Hattermann T;Floricioiu D;Krieger L;Dodd PA;Kanzow T;Licciulli C;Schannwell C
通讯作者：
Schannwell C
影响因子：
5.2
作者：
Huhn, Oliver;Hattermann, Tore;Sueltenfuss, Juergen
通讯作者：
Sueltenfuss, Juergen