Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-018-0162-0 |
Gulf Stream rings as a source of iron to the North Atlantic subtropical gyre | |
Conway, Tim M.1,2,3; Palter, Jaime B.4; de Souza, Gregory F.3 | |
2018-08-01 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2018 |
卷号 | 11期号:8页码:594-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Switzerland |
英文摘要 | Substantial amounts of nitrogen fixation occur in the North Atlantic subtropical gyre, due to the activity of cyanobacteria with high iron requirements. Iron is delivered to this region by dust from the Sahara Desert. However, this dust deposition is typically localized and episodic. Therefore, other sources of iron may also be important. Here, we report observations of dissolved iron concentrations in a Gulf Stream cold-core ring, which transported iron-rich water from near the continental slope into the subtropical gyre. We find that iron concentrations were elevated in the ring compared with subtropical waters, reflecting its source waters. Using iron data from these source waters and the identification of ring activity in satellite data, we estimate that cold-core rings provide a net flux of 0.3 +/- 0.17 x 10(8) mol Fe yr(-1) across the northwestern gyre edge, on the order of 15% of our median estimates of gyre-wide supply of iron by dust deposition. We suggest that iron supply from cold-core rings is an important source of iron to the northwestern gyre edge. We conclude that mesoscale ocean circulation features may play an important role in subtropical nutrient and carbon cycling. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000440301400013 |
WOS关键词 | DISSOLVED IRON ; TIME-SERIES ; PRIMARY PRODUCTIVITY ; NITROGEN-FIXATION ; SARGASSO SEA ; OCEAN ; LIMITATION ; VARIABILITY ; PHOSPHORUS ; INPUTS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/34926 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ S Florida, Coll Marine Sci, St Petersburg, FL 33701 USA; 2.Univ S Florida, Sch Geosci, St Petersburg, FL 33701 USA; 3.Swiss Fed Inst Technol, Inst Geochem & Petr, Dept Earth Sci, Zurich, Switzerland; 4.Univ Rhode Isl, Sch Oceanog, Narragansett, RI USA |
推荐引用方式 GB/T 7714 | Conway, Tim M.,Palter, Jaime B.,de Souza, Gregory F.. Gulf Stream rings as a source of iron to the North Atlantic subtropical gyre[J]. NATURE GEOSCIENCE,2018,11(8):594-+. |
APA | Conway, Tim M.,Palter, Jaime B.,&de Souza, Gregory F..(2018).Gulf Stream rings as a source of iron to the North Atlantic subtropical gyre.NATURE GEOSCIENCE,11(8),594-+. |
MLA | Conway, Tim M.,et al."Gulf Stream rings as a source of iron to the North Atlantic subtropical gyre".NATURE GEOSCIENCE 11.8(2018):594-+. |
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