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Nature:防止南极冰层融化的屏障正在加倍消失 快报文章
资源环境快报,2024年第4期
作者:  薛明媚,王金平
Microsoft Word(15Kb)  |  收藏  |  浏览/下载:599/0  |  提交时间:2024/03/01
Antarctic  Ice Shelves  Sea Level Rise  
新模型预测出迄今为止最准确的南极冰盖融化 快报文章
资源环境快报,2023年第22期
作者:  魏艳红
Microsoft Word(18Kb)  |  收藏  |  浏览/下载:427/0  |  提交时间:2023/11/30
Antarctic Ice Sheet Melt  Sea Level Rise  Movement of Tectonic Plates  
国际研究指出南极附近的深海洋流即将崩溃 快报文章
资源环境快报,2023年第07期
作者:  薛明媚,王金平
Microsoft Word(19Kb)  |  收藏  |  浏览/下载:529/1  |  提交时间:2023/04/15
Antarctic  Overturning Current  Sea Ice  
美国研究揭示南极基底融化对未来冰盖变化的影响 快报文章
资源环境快报,2022年第18期
作者:  薛明媚
Microsoft Word(14Kb)  |  收藏  |  浏览/下载:574/0  |  提交时间:2022/10/01
Antarctic Ice Sheet  Basal Thaw  Sea Level Rise  
AWI:南极海冰预测模型应将涡旋作用纳入其中 快报文章
资源环境快报,2022年第03期
作者:  薛明媚;  吴秀平
Microsoft Word(16Kb)  |  收藏  |  浏览/下载:715/0  |  提交时间:2022/02/16
Antarctic  Eddies  Sea Ice  
NSF:1979年以来南极洲周围海冰呈现出总体增长 快报文章
资源环境快报,2022年第03期
作者:  魏艳红
Microsoft Word(15Kb)  |  收藏  |  浏览/下载:682/0  |  提交时间:2022/02/16
NSF  Antarctic sea ice  Recent changes  
新研究指出三分之一的南极冰架面临坍塌的危险 快报文章
资源环境快报,2021年第8期
作者:  薛明媚,吴秀平
Microsoft Word(15Kb)  |  收藏  |  浏览/下载:440/0  |  提交时间:2021/04/30
Antarctic  Ice Shelves  Rising Sea Level  
Ice retreat in Wilkes Basin of East Antarctica during a warm interglacial 期刊论文
NATURE, 2020, 583 (7817) : 554-+
作者:  T. Blackburn;  G. H. Edwards;  S. Tulaczyk;  M. Scudder;  G. Piccione;  B. Hallet;  N. McLean;  J. C. Zachos;  B. Cheney;  J. T. Babbe
收藏  |  浏览/下载:21/0  |  提交时间:2020/08/09

Uranium isotopes in subglacial precipitates from the Wilkes Basin of the East Antarctic Ice Sheet reveal ice retreat during a warm Pleistocene interglacial period about 400,000 years ago.


Efforts to improve sea level forecasting on a warming planet have focused on determining the temperature, sea level and extent of polar ice sheets during Earth'  s past interglacial warm periods(1-3). About 400,000 years ago, during the interglacial period known as Marine Isotopic Stage 11 (MIS11), the global temperature was 1 to 2 degrees Celsius greater(2)and sea level was 6 to 13 metres higher(1,3). Sea level estimates in excess of about 10 metres, however, have been discounted because these require a contribution from the East Antarctic Ice Sheet(3), which has been argued to have remained stable for millions of years before and includes MIS11(4,5). Here we show how the evolution of(234)U enrichment within the subglacial waters of East Antarctica recorded the ice sheet'  s response to MIS11 warming. Within the Wilkes Basin, subglacial chemical precipitates of opal and calcite record accumulation of(234)U (the product of rock-water contact within an isolated subglacial reservoir) up to 20 times higher than that found in marine waters. The timescales of(234)U enrichment place the inception of this reservoir at MIS11. Informed by the(234)U cycling observed in the Laurentide Ice Sheet, where(234)U accumulated during periods of ice stability(6)and was flushed to global oceans in response to deglaciation(7), we interpret our East Antarctic dataset to represent ice loss within the Wilkes Basin at MIS11. The(234)U accumulation within the Wilkes Basin is also observed in the McMurdo Dry Valleys brines(8-10), indicating(11)that the brine originated beneath the adjacent East Antarctic Ice Sheet. The marine origin of brine salts(10)and bacteria(12)implies that MIS11 ice loss was coupled with marine flooding. Collectively, these data indicate that during one of the warmest Pleistocene interglacials, the ice sheet margin at the Wilkes Basin retreated to near the precipitate location, about 700 kilometres inland from the current position of the ice margin, which-assuming current ice volumes-would have contributed about 3 to 4 metres(13)to global sea levels.


  
新研究解释了南极海冰流失的原因 快报文章
资源环境快报,2020年第13期
作者:  薛明媚,王金平
Microsoft Word(13Kb)  |  收藏  |  浏览/下载:513/0  |  提交时间:2020/07/15
Antarctic sea ice  loss  explained  
Exceptionally Warm and Prolonged Flow of Warm Deep Water Toward the Filchner-Ronne Ice Shelf in 2017 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Ryan, Svenja;  Hellmer, Hartmut H.;  Janout, Markus;  Darelius, Elin;  Vignes, Lucie;  Schroeder, Michael
收藏  |  浏览/下载:11/0  |  提交时间:2020/06/16
ocean-ice shelf interaction  Weddell Sea  warm inflow  Antarctic Slope Front  Filchner-Ronne Ice Shelf