Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1614693114 |
Carbon isotope evidence for a northern source of deep water in the glacial western North Atlantic | |
Keigwin, Lloyd D.; Swift, Stephen A. | |
2017-03-14 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:11页码:2831-2835 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The prevailing view of western Atlantic hydrography during the Last Glacial Maximum (LGM) calls for transport and intermixing of deep southern and intermediate northern end members. However, delta C-13 and. Delta C-14 results on foraminifera from a sediment core at 5.0 km in the northern subtropics show that there may have also been a northern source of relatively young, very dense, nutrientdepleted water during the LGM (18 ky to 21 ky ago). These results, when integrated with data from other western North Atlantic locations, indicate that the ocean was poorly ventilated at 4.2 km, with better ventilation above and below that depth. If this is a signal of water mass source and not nutrient storage, it would indicate that a previously unrecognized deep water end member originated along the western margin of the Labrador Sea, analogous to dense water formation today around Antarctica and in the Okhotsk Sea. |
英文关键词 | ocean ventilation western North Atlantic Last Glacial Maximum carbon isotopes oxygen isotopes |
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:000396094200033 |
WOS关键词 | LAST DEGLACIATION ; OVERTURNING CIRCULATION ; OCEAN ; VENTILATION ; DELTA-C-13 ; EVOLUTION ; MAXIMUM ; PERIOD |
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/204676 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA |
推荐引用方式 GB/T 7714 | Keigwin, Lloyd D.,Swift, Stephen A.. Carbon isotope evidence for a northern source of deep water in the glacial western North Atlantic[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(11):2831-2835. |
APA | Keigwin, Lloyd D.,&Swift, Stephen A..(2017).Carbon isotope evidence for a northern source of deep water in the glacial western North Atlantic.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(11),2831-2835. |
MLA | Keigwin, Lloyd D.,et al."Carbon isotope evidence for a northern source of deep water in the glacial western North Atlantic".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.11(2017):2831-2835. |
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