Summer surface melt thins Petermann Gletscher Ice Shelf by enhancing channelized basal melt
Summer surface melt thins Petermann Gletscher Ice Shelf by enhancing channelized basal melt
复制标题
夏季地表融化通过增强通道化基底融化而使彼得曼冰川冰架变薄
DOI:
10.1017/jog.2019.43
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发表时间:
2019
影响因子:
3.4
通讯作者:
PADMAN, LAURIE
中科院分区:
文献类型:
--
作者:
WASHAM, PETER;NICHOLLS, KEITH W.;MÜNCHOW, ANDREAS;PADMAN, LAURIE
Increasing ocean and air temperatures have contributed to the removal of floating ice shelves from several Greenland outlet glaciers; however, the specific contribution of these external forcings remains poorly understood. Here we use atmospheric, oceanographic and glaciological time series data from the ice shelf of Petermann Gletscher, NW Greenland to quantify the forcing of the ocean and atmosphere on the ice shelf at a site ~16 km from the grounding line within a large sub-ice-shelf channel. Basal melt rates here indicate a strong seasonality, rising from a winter mean of 2 m a−1 to a maximum of 80 m a−1 during the summer melt season. This increase in basal melt rates confirms the direct link between summer atmospheric warming around Greenland and enhanced ocean-forced melting of its remaining ice shelves. We attribute this enhanced melting to increased discharge of subglacial runoff into the ocean at the grounding line, which strengthens under-ice currents and drives a greater ocean heat flux toward the ice base.
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影响因子:
13.6
作者:
Dow CF;Lee WS;Greenbaum JS;Greene CA;Blankenship DD;Poinar K;Forrest AL;Young DA;Zappa CJ
通讯作者:
Zappa CJ
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
R. Motyka;W. P. Dryer;J. Amundson;M. Truffer;M. Fahnestock
通讯作者:
M. Fahnestock
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
H. Bryden
通讯作者:
H. Bryden
影响因子:
5.2
作者:
Stevens, Laura A.;Straneo, Fiamma;Morlighem, Mathieu
通讯作者:
Morlighem, Mathieu
影响因子:
5.2
作者:
Jackson, R. H.;Shroyer, E. L.;Stearns, L. A.
通讯作者:
Stearns, L. A.