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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:59/0  |  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.


  
Dynamical response of atmospheric circulation to below-normal East Sea sea surface temperatures associated with heavy snowfall in eastern Korea 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2020, 15 (7)
作者:  Kim, Taekyun;  Kim, Yoonjae;  Moon, Jae-Hong;  Jin, Emilia Kyung
收藏  |  浏览/下载:25/0  |  提交时间:2020/08/18
heavy snowfall  East Sea  heavy snowfall-related sea surface temperature  atmospheric circulation  
Characteristics and source apportionment of PM2.5 on an island in Southeast China: Impact of sea-salt and monsoon 期刊论文
ATMOSPHERIC RESEARCH, 2020, 235
作者:  Liu, Taotao;  Hu, Baoye;  Yang, Yuxiang;  Li, Mengren;  Hong, Youwei;  Xu, Xinbei;  Xu, Lingling;  Chen, Naihua;  Chen, Yanting;  Xiao, Hang;  Chen, Jinsheng
收藏  |  浏览/下载:21/0  |  提交时间:2020/07/02
PM2.5  Source apportionment  Island  East Asian monsoon  Sea salt  
Rapid Decay of Slowly Moving Typhoon Soulik (2018) due to Interactions With the Strongly Stratified Northern East China Sea 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019
作者:  Park, Jae-Hyoung;  Yeo, Da-Eun;  Lee, KyungJae;  Lee, Hojun;  Lee, Seung-Woo;  Noh, Suyun;  Kim, Seongjung;  Shin, JiYun;  Choi, Yeon;  Nam, SungHyun
收藏  |  浏览/下载:21/0  |  提交时间:2020/02/17
typhoon  tropical cyclone  air-sea interaction  East China Sea  sea surface  stratification  
Links Between the Coral delta C-13 Record of Primary Productivity Variations in the Northern South China Sea and the East Asian Winter Monsoon 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019
作者:  Han, Tao;  Yu, Kefu;  Yan, Hongqiang;  Deng, Wenfeng;  Liu, Yi;  Xu, Shendong;  Tao, Shichen;  Zhang, Huiling;  Wang, Shaopeng
收藏  |  浏览/下载:31/0  |  提交时间:2020/02/17
coral  carbon isotope  primary productivity  East Asian Winter Monsoon  South China Sea  
Impact of differences in the decaying phase of El Nino on South and East Asia summer monsoon in CMIP5 models 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019, 39 (14) : 5503-5521
作者:  Srinivas, Gangiredla;  Chowdary, Jasti S.;  Gnanaseelan, Chellappan;  Parekh, Anant;  Dandi, Ramu;  Prasad, Koneru Venkata Siva Rama;  Naidu, Chennu Venkata
收藏  |  浏览/下载:40/0  |  提交时间:2020/02/17
CMIP5 models  El Nino decaying phase  sea surface temperature  South Asia and East Asia monsoon rainfall  tropical Indian Ocean  
Improved probabilistic twenty-first century projections of sea surface temperature over East Asian marginal seas by considering uncertainty owing to model error and internal variability 期刊论文
CLIMATE DYNAMICS, 2019, 53: 6075-6087
作者:  Shin, Jongsoo;  Olson, Roman;  An, Soon-Il
收藏  |  浏览/下载:11/0  |  提交时间:2019/11/27
East Asian marginal seas  Sea surface temperature  Multi-model ensemble  Bayesian model averaging  
Impacts of the mid-latitude westerlies anomaly on the decadal sea level variability east of China 期刊论文
CLIMATE DYNAMICS, 2019, 53: 5985-5998
作者:  Yu, Kai;  Liu, Hailong;  Chen, Yingying;  Dong, Changming;  Dong, Jihai;  Yan, Yunwei;  Wang, Dongxiao
收藏  |  浏览/下载:27/0  |  提交时间:2019/11/27
Sea level change  Decadal variability  Mid-latitude westerlies  East China Sea  North Pacific Gyre Oscillation  
Climatology of the spring Red Sea Trough 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019, 39 (11) : 4218-4233
作者:  Baseer, Muhammad N.;  Awad, Adel M.;  Almazroui, Mansour
收藏  |  浏览/下载:14/0  |  提交时间:2019/11/27
Middle East  Red Sea Trough (RST)  spring RST  Sudan low  
Role of autumn Arctic Sea ice in the subsequent summer precipitation variability over East Asia 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019
作者:  Liu, Yang;  Zhu, Yali;  Wang, Huijun;  Gao, Yongqi;  Sun, Jianqi;  Wang, Tao;  Ma, Jiehua;  Yurova, Alla;  Li, Fei
收藏  |  浏览/下载:29/0  |  提交时间:2019/11/27
Arctic Sea ice  precipitation over East Asia  seasonal prediction  snow depth  soil moisture