Winter dynamics in an epishelf lake ...
The last intact ice shelf in the Canadian Arctic is located at the mouth of Milne Fiord (82.6N, 81.0W), on Ellesmere Island, Nunavut. During melt season, the ice shelf acts as a dam preventing meltwater from flowing freely to the ocean. This results in a permanent layer of freshwater that "floa...
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ftdatacite:10.14288/1.0392852 2024-04-28T08:10:19+00:00 Winter dynamics in an epishelf lake ... Bonneau, Jérémie 2020 https://dx.doi.org/10.14288/1.0392852 https://doi.library.ubc.ca/10.14288/1.0392852 en eng University of British Columbia article-journal Text ScholarlyArticle 2020 ftdatacite https://doi.org/10.14288/1.0392852 2024-04-02T09:30:52Z The last intact ice shelf in the Canadian Arctic is located at the mouth of Milne Fiord (82.6N, 81.0W), on Ellesmere Island, Nunavut. During melt season, the ice shelf acts as a dam preventing meltwater from flowing freely to the ocean. This results in a permanent layer of freshwater that "floats" on top of the seawater of the fjord. This layer of freshwater is called an epishelf lake. The winter data from a mooring installed in Milne Fiord epishelf lake (2011-2019) is analysed in the framework of a one dimensional model in order to study 1) mixing in the upper water column and 2) the evolution of a basal channel in the ice shelf. The results show that vertical mixing is surprisingly higher in the epishelf lake than in the seawater underneath. Estimation of the Richardson number using geostrophic balance indicates that enhanced mixing in the epishelf lake is associated with horizontal temperature gradients. Moreover, the analysis suggests that all of the freshwater reaching the ocean travels through a single ... Text Arctic Ellesmere Island Ice Shelf Milne Fiord Nunavut DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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English |
description |
The last intact ice shelf in the Canadian Arctic is located at the mouth of Milne Fiord (82.6N, 81.0W), on Ellesmere Island, Nunavut. During melt season, the ice shelf acts as a dam preventing meltwater from flowing freely to the ocean. This results in a permanent layer of freshwater that "floats" on top of the seawater of the fjord. This layer of freshwater is called an epishelf lake. The winter data from a mooring installed in Milne Fiord epishelf lake (2011-2019) is analysed in the framework of a one dimensional model in order to study 1) mixing in the upper water column and 2) the evolution of a basal channel in the ice shelf. The results show that vertical mixing is surprisingly higher in the epishelf lake than in the seawater underneath. Estimation of the Richardson number using geostrophic balance indicates that enhanced mixing in the epishelf lake is associated with horizontal temperature gradients. Moreover, the analysis suggests that all of the freshwater reaching the ocean travels through a single ... |
format |
Text |
author |
Bonneau, Jérémie |
spellingShingle |
Bonneau, Jérémie Winter dynamics in an epishelf lake ... |
author_facet |
Bonneau, Jérémie |
author_sort |
Bonneau, Jérémie |
title |
Winter dynamics in an epishelf lake ... |
title_short |
Winter dynamics in an epishelf lake ... |
title_full |
Winter dynamics in an epishelf lake ... |
title_fullStr |
Winter dynamics in an epishelf lake ... |
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Winter dynamics in an epishelf lake ... |
title_sort |
winter dynamics in an epishelf lake ... |
publisher |
University of British Columbia |
publishDate |
2020 |
url |
https://dx.doi.org/10.14288/1.0392852 https://doi.library.ubc.ca/10.14288/1.0392852 |
genre |
Arctic Ellesmere Island Ice Shelf Milne Fiord Nunavut |
genre_facet |
Arctic Ellesmere Island Ice Shelf Milne Fiord Nunavut |
op_doi |
https://doi.org/10.14288/1.0392852 |
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1797578251162353664 |