| DOI: | 10.1002/2016GL070191
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| 论文题名: | High export of dissolved silica from the Greenland Ice Sheet |
| 作者: | Meire L.; Meire P.; Struyf E.; Krawczyk D.W.; Arendt K.E.; Yde J.C.; Juul Pedersen T.; Hopwood M.J.; Rysgaard S.; Meysman F.J.R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8670
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| EISSN: | 1944-8401
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| 出版年: | 2016
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| 卷: | 43, 期:17 | | 起始页码: | 9173
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| 结束页码: | 9182
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| 语种: | 英语
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| 英文关键词: | biogeochemistry
; Greenland Ice Sheet
; silica cycle
; weathering
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| Scopus关键词: | Biogeochemistry
; Budget control
; Dissolution
; Glacial geology
; Glaciers
; Phytoplankton
; Silica
; Silicates
; Weathering
; Dissolved silica
; Essential elements
; Glacial activity
; Glacial meltwater
; Greenland Ice Sheet
; Primary production
; Rock weathering
; Silica cycle
; Ice
; biogeochemistry
; diatom
; dissolved load
; fjord
; meltwater
; nitrate
; phytoplankton
; primary production
; silica
; upwelling
; weathering
; Arctic
; Greenland
; Greenland Ice Sheet
; Bacillariophyta
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| 英文摘要: | Silica is an essential element for marine life and plays a key role in the biogeochemistry of the ocean. Glacial activity stimulates rock weathering, generating dissolved silica that is exported to coastal areas along with meltwater. The magnitude of the dissolved silica export from large glacial areas such as the Greenland Ice Sheet is presently poorly quantified and not accounted for in global budgets. Here we present data from two fjord systems adjacent to the Greenland Ice Sheet which reveal a large export of dissolved silica by glacial meltwater relative to other macronutrients. Upscaled to the entire Greenland Ice Sheet, the export of dissolved silica equals 22 ± 10 Gmol Si yr−1. When the silicate-rich meltwater mixes with upwelled deep water, either inside or outside Greenland's fjords, primary production takes place at increased silicate to nitrate ratios. This likely stimulates the growth of diatoms relative to other phytoplankton groups. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987712286&doi=10.1002%2f2016GL070191&partnerID=40&md5=86d366ff4cc113dfe6db08b07df8ce71
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9633
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Greenland Climate Research Centre, Greenland Institute of Natural Resources, Nuuk, Greenland
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| Recommended Citation: | |
Meire L.,Meire P.,Struyf E.,et al. High export of dissolved silica from the Greenland Ice Sheet[J]. Geophysical Research Letters,2016-01-01,43(17).
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