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DOI | 10.1038/s41561-020-0567-4 |
Eurasian Ice Sheet collapse was a major source of Meltwater Pulse 1A 14,600 years ago | |
Brendryen, Jo1,2,3; Haflidason, Haflidi1,2,3; Yokoyama, Yusuke4,5,6,7; Haaga, Kristian Agasoster1,2,3; Hannisdal, Bjarte1,2,3 | |
2020-04-20 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2020 |
卷号 | 13期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Norway; Japan |
英文摘要 | Marine-based sections of the Eurasian Ice Sheet collapsed rapidly during a warming event 14,600 years ago and contributed to the Meltwater Pulse 1A event, according to a recalibrated age model for sediments from the Norwegian Sea. Rapid sea-level rise caused by the collapse of large ice sheets is a threat to human societies. In the last deglacial period, the rate of global sea-level rise peaked at more than 4 cm yr(-1) during Meltwater Pulse 1A, which coincided with the Bolling warming event some 14,650 years ago. However, the sources of the meltwater have proven elusive, and the contribution from Eurasian ice sheets has been considered negligible. Here, we present a regional carbon-14 calibration curve for the Norwegian Sea and recalibrate marine C-14 dates linked to the Eurasian Ice Sheet retreat. We find that marine-based sectors of the Eurasian Ice Sheet collapsed at the Bolling transition and lost an ice volume of 4.5-7.9 m sea-level equivalents (SLE) over 500 years. During peak melting, 3.3-6.7 m SLE of ice was lost, potentially explaining up to half of Meltwater Pulse 1A. A mean meltwater flux of 0.2 Sv over 300 years was injected into the Norwegian Sea and the Arctic Ocean at a time when proxy evidence suggests vigorous Atlantic meridional overturning circulation. Our reconstruction shows that massive marine-based ice sheets can collapse in as little as 300-500 years. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000527502200001 |
WOS关键词 | NORTH-ATLANTIC CLIMATE ; WESTERN BARENTS SEA ; FRANZ VICTORIA TROUGH ; LAST GLACIAL MAXIMUM ; PINE ISLAND GLACIER ; 13 C-14 KA ; LEVEL RISE ; PALEOCEANOGRAPHIC EVOLUTION ; SEDIMENTARY ENVIRONMENTS ; GREENLAND TEMPERATURE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249261 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Bergen, Dept Earth Sci, Bergen, Norway; 2.Univ Bergen, Bjerknes Ctr Climate Res, Bergen, Norway; 3.Univ Bergen, KG Jebsen Ctr Deep Sea Res, Bergen, Norway; 4.Univ Tokyo, Atmosphere & Ocean Res Inst, Kashiwa, Chiba, Japan; 5.Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Tokyo, Japan; 6.Univ Tokyo, Grad Program Environm Sci, Tokyo, Japan; 7.Japan Agcy Marine Earth Sci & Technol, Biogeochem Program, Yokosuka, Kanagawa, Japan |
推荐引用方式 GB/T 7714 | Brendryen, Jo,Haflidason, Haflidi,Yokoyama, Yusuke,et al. Eurasian Ice Sheet collapse was a major source of Meltwater Pulse 1A 14,600 years ago[J]. NATURE GEOSCIENCE,2020,13(5). |
APA | Brendryen, Jo,Haflidason, Haflidi,Yokoyama, Yusuke,Haaga, Kristian Agasoster,&Hannisdal, Bjarte.(2020).Eurasian Ice Sheet collapse was a major source of Meltwater Pulse 1A 14,600 years ago.NATURE GEOSCIENCE,13(5). |
MLA | Brendryen, Jo,et al."Eurasian Ice Sheet collapse was a major source of Meltwater Pulse 1A 14,600 years ago".NATURE GEOSCIENCE 13.5(2020). |
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