Rapid drawdown of Antarctica's Wordie Ice Shelf glaciers in response to ENSO/Southern Annular Mode-driven warming in the Southern Ocean
Rapid drawdown of Antarctica's Wordie Ice Shelf glaciers in response to ENSO/Southern Annular Mode-driven warming in the Southern Ocean
复制标题
南极洲沃迪冰架冰川因 ENSO/南方环模驱动的南大洋变暖而迅速缩小
DOI：
10.1016/j.epsl.2017.08.005
复制
发表时间：
2017
影响因子：
5.3
通讯作者：
A. Gardner
中科院分区：
文献类型：
--
作者：
C. Walker;A. Gardner
在这里，我们调查了2008年干涉合成孔径雷达和2014年陆地卫星速度测绘之间整个南极洲冰流的最大加速度。这种情况发生在曾经流入南极半岛西部沃迪冰架的冰川中，该冰架于1989年12月迅速解体。在2008年至2014年期间，这些冰川的表面海拔下降至少是2002-2008年期间的三倍。经过20年的相对稳定，冰架崩塌不太可能在大的响应中发挥作用。相反，我们发现快速加速和表面下降与冰-海边界的融化增强有关，这归因于全球大气环流模式驱动的风的变化，即厄尔尼诺-南方涛动（ENSO）和南方环形模式（SAM），将地面冰的变化与大气驱动的海洋变暖联系起来。
Here we investigate the largest acceleration in ice flow across all of Antarctica between ∼2008 InSAR and 2014 Landsat velocity mappings. This occurred in glaciers that used to feed into the Wordie Ice Shelf on the west Antarctic Peninsula, which rapidly disintegrated in ∼1989. Between 2008 and 2014, these glaciers experienced at least a threefold increase in surface elevation drawdown relative to the 2002–2008 time period. After ∼20 yrs of relative stability, it is unlikely that the ice shelf collapse played a role in the large response. Instead, we find that the rapid acceleration and surface drawdown is linked to enhanced melting at the ice-ocean boundary, attributable to changes in winds driven by global atmospheric circulation patterns, namely the El Niño–Southern Oscillation (ENSO) and Southern Annular Mode (SAM), linking changes in grounded ice to atmospheric-driven ocean warming.
影响因子：
5.2
作者：
Hogg, Anna E.;Shepherd, Andrew;Wuite, Jan
通讯作者：
Wuite, Jan
影响因子：
8
作者：
Raphael, M. N.;Marshall, G. J.;Hobbs, W. R.
通讯作者：
Hobbs, W. R.