A model for tidewater glacier undercutting by submarine melting
A model for tidewater glacier undercutting by submarine melting
复制标题
海底融化导致潮水冰川底切的模型
DOI:
10.1002/2016gl072374
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发表时间:
2017
影响因子:
5.2
通讯作者:
Slater D
中科院分区:
文献类型:
--
作者:
Slater D
Dynamic change at the marine‐terminating margins of the Greenland Ice Sheet may be initiated by the ocean, particularly where subglacial runoff drives vigorous ice‐marginal plumes and rapid submarine melting. Here we model submarine melt‐driven undercutting of tidewater glacier termini, simulating a process which is key to understanding ice‐ocean coupling. Where runoff emerges from broad subglacial channels we find that undercutting has only a weak impact on local submarine melt rate but increases total ablation by submarine melting due to the larger submerged ice surface area. Thus, the impact of melting is determined not only by the melt rate magnitude but also by the slope of the ice‐ocean interface. We suggest that the most severe undercutting occurs at the maximum height in the fjord reached by the plume, likely promoting calving of ice above. It remains unclear, however, whether undercutting proceeds sufficiently rapidly to influence calving at Greenland's fastest‐flowing glaciers.
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影响因子:
5.2
作者:
Yun Xu;E. Rignot;I. Fenty;D. Menemenlis;M. Flexas
通讯作者:
M. Flexas
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
D. Slater;D. Goldberg;P. Nienow;T. Cowton
通讯作者:
T. Cowton
影响因子:
5.2
作者:
Cook, S.;Rutt, I. C.;James, T. D.
通讯作者:
James, T. D.
DOI:
10.1029/jb092ib09p09051
发表时间:
1987-08-10
期刊:
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS
影响因子:
--
作者:
MEIER, MF;POST, A
通讯作者:
POST, A
影响因子:
18.3
作者:
James T
通讯作者:
James T