Subglacial discharge accelerates future retreat of Denman and Scott Glaciers, East Antarctica.

Subglacial discharge accelerates future retreat of Denman and Scott Glaciers, East Antarctica.
复制标题

DOI:
10.1126/sciadv.adi9014
复制
发表时间:
2023-10-27
期刊:
影响因子:
13.6
通讯作者:
Morlighem, Mathieu
Morlighem, Mathieu
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Pelle, Tyler;Greenbaum, Jamin S.;Dow, Christine F.;Jenkins, Adrian;Morlighem, Mathieu

文献摘要

参考文献

相似文献

冰架基底融化是驱动南极冰盖质量损失的主要机制,但目前尚不清楚冰下放电引起的局部融化增强将如何影响未来的南极冰川退缩。我们开发了冰架基底融化的参数化,可以解释海洋和冰下放电强迫,并将其应用于对东南极洲登曼冰川和斯科特冰川至 2300 年的未来预测。在正向模拟中,冰下放电使这些系统退缩到地球上最深的大陆海沟的速度加快了 25 年。在这次退缩期间,仅丹曼冰川每年就导致全球海平面上升 0.33 毫米,相当于整个南极冰盖当代海平面贡献的一半。我们的结果强调了在未来南极冰盖预测中解决冰、海洋和冰下环境之间复杂相互作用的重要性。冰下放电加速了冰架融化,加速丹曼冰川和斯科特冰川退缩到地球最深的海沟中。
Ice shelf basal melting is the primary mechanism driving mass loss from the Antarctic Ice Sheet, yet it is unknown how the localized melt enhancement from subglacial discharge will affect future Antarctic glacial retreat. We develop a parameterization of ice shelf basal melt that accounts for both ocean and subglacial discharge forcing and apply it in future projections of Denman and Scott Glaciers, East Antarctica, through 2300. In forward simulations, subglacial discharge accelerates the onset of retreat of these systems into the deepest continental trench on Earth by 25 years. During this retreat, Denman Glacier alone contributes 0.33 millimeters per year to global sea level rise, comparable to half of the contemporary sea level contribution of the entire Antarctic Ice Sheet. Our results stress the importance of resolving complex interactions between the ice, ocean, and subglacial environments in future Antarctic Ice Sheet projections. Subglacial discharge enhances ice shelf melt, accelerating retreat of Denman and Scott Glaciers into the deepest trench on Earth.
DOI: 10.1029/2020jf005910
发表时间: 2021-03-01
影响因子: 3.9
作者:
Everett, Alistair;Murray, Tavi;Reeve, Dominic E.
通讯作者: Reeve, Dominic E.
DOI: 10.1029/2011jf002140
发表时间: 2012-03-10
影响因子: 3.9
作者:
Larour, E.;Seroussi, H.;Rignot, E.
通讯作者: Rignot, E.
DOI: 10.1038/nature17145
发表时间: 2016-03-31
期刊: NATURE
影响因子: 64.8
作者:
DeConto, Robert M.;Pollard, David
通讯作者: Pollard, David
DOI: 10.1038/s41561-020-0616-z
发表时间: 2020-09
期刊: Nature geoscience
影响因子: 18.3
作者:
Adusumilli S;Fricker HA;Medley B;Padman L;Siegfried MR
通讯作者: Siegfried MR
DOI: 10.1029/2019gl082526
发表时间: 2019-05-16
影响因子: 5.2
作者:
Joughin, Ian;Smith, Benjamin E.;Schoof, Christian G.
通讯作者: Schoof, Christian G.