Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-018-0268-4 |
Nutrient release to oceans from buoyancy-driven upwelling at Greenland tidewater glaciers | |
Cape, Mattias R.1,2; Straneo, Fiammetta1,3; Beaird, Nicholas1,4; Bundy, Randelle M.2,5; Charette, Matthew A.5 | |
2019 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2019 |
卷号 | 12期号:1页码:34-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The discharge of nutrient-rich meltwater from the Greenland Ice Sheet has emerged as a potentially important contributor to regional marine primary production and nutrient cycling. While significant, this direct nutrient input by the ice sheet may be secondary to the upwelling of deep-ocean-sourced nutrients driven by the release of meltwater at depth in glacial fjords. Here, we present a comprehensive suite of micro- and macronutrient observations collected in Sermilik Fjord at the margin of Helheim, one of Greenland's largest glaciers, and quantitatively decompose glacial and ocean contributions to fjord dissolved nutrient inventories. We show that the substantial enrichment in nitrate, phosphate and silicate observed in the upper 250 m of the glacial fjord is the result of upwelling of warm subtropical waters present at depth throughout the fjord. These nutrient-enriched fjord waters are subsequently exported subsurface to the continental shelf. The upwelled nutrient transport within Sermilik rivals exports by the largest Arctic rivers and the ice sheet as a whole, suggesting that glacier-induced pumping of deep nutrients may constitute a major source of macronutrients to the surrounding coastal ocean. The importance of this mechanism is likely to grow given projected increases in surface melt of the ice sheet. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000454010200008 |
WOS关键词 | OPTIMUM MULTIPARAMETER ANALYSIS ; FRESH-WATER FLUX ; ICE-SHEET ; SEASONAL VARIABILITY ; WEST GREENLAND ; MELTWATER ; FJORD ; IRON ; ATLANTIC ; CIRCULATION |
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/35091 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Woods Hole Oceanog Inst, Dept Phys Oceanog, Woods Hole, MA 02543 USA; 2.Univ Washington, Sch Oceanog, Seattle, WA 98195 USA; 3.Univ Calif San Diego, Scripps Inst Oceanog, Climate Atmospher Sci & Phys Oceanog Dept, La Jolla, CA 92093 USA; 4.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA; 5.Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA |
推荐引用方式 GB/T 7714 | Cape, Mattias R.,Straneo, Fiammetta,Beaird, Nicholas,et al. Nutrient release to oceans from buoyancy-driven upwelling at Greenland tidewater glaciers[J]. NATURE GEOSCIENCE,2019,12(1):34-+. |
APA | Cape, Mattias R.,Straneo, Fiammetta,Beaird, Nicholas,Bundy, Randelle M.,&Charette, Matthew A..(2019).Nutrient release to oceans from buoyancy-driven upwelling at Greenland tidewater glaciers.NATURE GEOSCIENCE,12(1),34-+. |
MLA | Cape, Mattias R.,et al."Nutrient release to oceans from buoyancy-driven upwelling at Greenland tidewater glaciers".NATURE GEOSCIENCE 12.1(2019):34-+. |
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