Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41467-020-15101-6 |
The nature of deep overturning and reconfigurations of the silicon cycle across the last deglaciation | |
Dumont, M.1,2; Pichevin, L.1; Geibert, W.3; Crosta, X.4; Michel, E.5; Moreton, S.6; Dobby, K.1; Ganeshram, R.1 | |
2020-03-24 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2020 |
卷号 | 11期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Scotland; Germany; France |
英文摘要 | Changes in ocean circulation and the biological carbon pump have been implicated as the drivers behind the rise in atmospheric CO2 across the last deglaciation; however, the processes involved remain uncertain. Previous records have hinted at a partitioning of deep ocean ventilation across the two major intervals of atmospheric CO2 rise, but the consequences of differential ventilation on the Si cycle has not been explored. Here we present three new records of silicon isotopes in diatoms and sponges from the Southern Ocean that together show increased Si supply from deep mixing during the deglaciation with a maximum during the Younger Dryas (YD). We suggest Antarctic sea ice and Atlantic overturning conditions favoured abyssal ocean ventilation at the YD and marked an interval of Si cycle reorganisation. By regulating the strength of the biological pump, the glacial-interglacial shift in the Si cycle may present an important control on Pleistocene CO2 concentrations. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000530024600004 |
WOS关键词 | ATMOSPHERIC CO2 CONCENTRATIONS ; WATER MASS STRUCTURE ; SOUTHERN-OCEAN ; CLIMATE VARIABILITY ; PACIFIC SECTOR ; BIOGENIC OPAL ; ATLANTIC ; NUTRIENT ; SI ; CIRCULATION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/249646 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Edinburgh, Sch Geosci, Edinburgh, Midlothian, Scotland; 2.Univ St Andrews, Sch Earth & Environm Sci, St Andrews, Fife, Scotland; 3.Alfred Wegener Inst, Bremerhaven, Germany; 4.Univ Bordeaux, UMR EPOC 5805, Bordeaux, France; 5.Inst Pierre Simon Laplace, Lab Sci Climat & Environm, Labo CNRS CEA UVSQ, Gif Sur Yvette, France; 6.Scottish Univ Environm Res Ctr, East Kilbride, Scotland |
推荐引用方式 GB/T 7714 | Dumont, M.,Pichevin, L.,Geibert, W.,et al. The nature of deep overturning and reconfigurations of the silicon cycle across the last deglaciation[J]. NATURE COMMUNICATIONS,2020,11(1). |
APA | Dumont, M..,Pichevin, L..,Geibert, W..,Crosta, X..,Michel, E..,...&Ganeshram, R..(2020).The nature of deep overturning and reconfigurations of the silicon cycle across the last deglaciation.NATURE COMMUNICATIONS,11(1). |
MLA | Dumont, M.,et al."The nature of deep overturning and reconfigurations of the silicon cycle across the last deglaciation".NATURE COMMUNICATIONS 11.1(2020). |
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