Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL075373 |
High-Frequency Observations of Temperature and Dissolved Oxygen Reveal Under-Ice Convection in a Large Lake | |
Yang, Bernard1; Young, Joelle2; Brown, Laura3; Wells, Mathew1 | |
2017-12-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:24 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Detailed observations of thermal structure over an entire winter in a large lake reveal the presence of large (10-20m) overturns under the ice, driven by diurnal solar heating. Convection can occur in the early winter, but the most vigorous convection occurred near the end of winter. Both periods are when our lake ice model suggest thinner ice that would have been transparent. This under-ice convection led to a deepening of the mixed layer over time, consistent with previous short-term studies. During periods of vigorous convection under the ice at the end of winter, the dissolved oxygen had become supersaturated from the surface to 23m below the surface, suggesting abundant algal growth. Analysis of our high-frequency observations over the entire winter of 2015 using the Thorpe-scale method quantified the scale of mixing. Furthermore, it revealed that changes in oxygen concentrations are closely related to the intensity of mixing. |
英文关键词 | convection lake ice circulation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000422954700024 |
WOS关键词 | DEEP LAKE ; DRIVEN ; SIMULATIONS ; VARIABILITY ; CIRCULATION ; TURBULENCE ; RETENTION ; DEPLETION ; SIMCOE ; WATER |
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/26569 |
专题 | 气候变化 |
作者单位 | 1.Univ Toronto Scarborough, Dept Phys & Environm Sci, Toronto, ON, Canada; 2.Minist Environm & Climate Change, Environm Monitoring & Reporting Branch, Toronto, ON, Canada; 3.Univ Toronto Mississauga, Dept Geog, Mississauga, ON, Canada |
推荐引用方式 GB/T 7714 | Yang, Bernard,Young, Joelle,Brown, Laura,et al. High-Frequency Observations of Temperature and Dissolved Oxygen Reveal Under-Ice Convection in a Large Lake[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(24). |
APA | Yang, Bernard,Young, Joelle,Brown, Laura,&Wells, Mathew.(2017).High-Frequency Observations of Temperature and Dissolved Oxygen Reveal Under-Ice Convection in a Large Lake.GEOPHYSICAL RESEARCH LETTERS,44(24). |
MLA | Yang, Bernard,et al."High-Frequency Observations of Temperature and Dissolved Oxygen Reveal Under-Ice Convection in a Large Lake".GEOPHYSICAL RESEARCH LETTERS 44.24(2017). |
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