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南极洲西部冰川从20世纪40年代开始显著退缩 快报文章
资源环境快报,2024年第5期
作者:  魏艳红
Microsoft Word(17Kb)  |  收藏  |  浏览/下载:574/0  |  提交时间:2024/03/15
West Antarctica  Thwaites Glacier  Ice Loss  
英国研究表明超过40%的南极洲冰架体积缩小 快报文章
资源环境快报,2023年第20期
作者:  魏艳红
Microsoft Word(16Kb)  |  收藏  |  浏览/下载:443/0  |  提交时间:2023/10/31
Antarctica's Ice Shelves  Ice Loss  Global Ocean Circulation  
研究发现美国西部野火产生的烟雾会影响北极海冰 快报文章
地球科学快报,2022年第15期
作者:  王立伟
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Wildfire  Arctic sea ice  loss  
全球冰流失正以创纪录的速度增加 快报文章
资源环境快报,2021年第3期
作者:  牛艺博
Microsoft Word(47Kb)  |  收藏  |  浏览/下载:488/0  |  提交时间:2021/02/15
NERC  ice loss  Remote sensing  Global warming  increases at record rate  
南极冰盖流失将影响未来的气候变化 快报文章
资源环境快报,2020年第19期
作者:  薛明媚,王金平
Microsoft Word(14Kb)  |  收藏  |  浏览/下载:417/0  |  提交时间:2020/10/15
Antarctic Ice Sheet  Future Climate Change  Loss  
ISMIP6分析南极和格陵兰冰盖对未来海平面的贡献 快报文章
气候变化快报,2020年第19期
作者:  刘燕飞
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Greenland  Antarctica  Ice Sheet  Sea-level Rise  Mass Loss  Ensemble  Representative Concentration Pathway  
南北极冰盖损失正在沿最严重的气候预估情景发展 快报文章
气候变化快报,2020年第18期
作者:  刘燕飞
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Ice-sheet loss  Sea-level rise  IPCC  Antarctica  Greenland  
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  
Role of Atmospheric Variability in Driving the "Warm-Arctic, Cold-Continent" Pattern Over the North America Sector and Sea Ice Variability Over the Chukchi-Bering Sea 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Guan, Weina;  Jiang, Xianan;  Ren, Xuejuan;  Chen, Gang;  Ding, Qinghua
收藏  |  浏览/下载:15/0  |  提交时间:2020/06/09
Arctic warming  surface air temperature  sea ice loss  atmospheric variability  large-scale circulation