Landfast Ice Controls on Turbulence in Antarctic Coastal Seas
Knowledge of the ocean surface layer beneath Antarctic landfast ice is sparse. In this article surface layer turbulent and fine structure are quantified with and without landfast ice at the same West Antarctic Peninsula location. Landfast ice reduced turbulence levels locally to an order of magnitud...
Published in: | Journal of Geophysical Research: Oceans |
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2022
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Online Access: | https://pure.uhi.ac.uk/en/publications/f95f0ff1-01d0-4648-88ed-9fe08863a023 https://doi.org/10.1029/2021JC017963 https://pureadmin.uhi.ac.uk/ws/files/17316641/JGR_Oceans_2021_Inall_Landfast_Ice_Controls_on_Turbulence_in_Antarctic_Coastal_Seas.pdf https://onlinelibrary.wiley.com/doi/10.1029/2021JC017963 |
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ftuhipublicatio:oai:pure.atira.dk:publications/f95f0ff1-01d0-4648-88ed-9fe08863a023 2024-02-04T09:53:58+01:00 Landfast Ice Controls on Turbulence in Antarctic Coastal Seas Inall, Mark E. Brearley, J. Alexander Henley, Sian F. Fraser, Alexander D. Reed, Sarah 2022-01-11 application/pdf https://pure.uhi.ac.uk/en/publications/f95f0ff1-01d0-4648-88ed-9fe08863a023 https://doi.org/10.1029/2021JC017963 https://pureadmin.uhi.ac.uk/ws/files/17316641/JGR_Oceans_2021_Inall_Landfast_Ice_Controls_on_Turbulence_in_Antarctic_Coastal_Seas.pdf https://onlinelibrary.wiley.com/doi/10.1029/2021JC017963 eng eng info:eu-repo/semantics/openAccess Inall , M E , Brearley , J A , Henley , S F , Fraser , A D & Reed , S 2022 , ' Landfast Ice Controls on Turbulence in Antarctic Coastal Seas ' , Journal of Geophysical Research: Oceans , vol. 127 , no. 1 . https://doi.org/10.1029/2021JC017963 landfast ice turbulence wind tides mixing nutrients article 2022 ftuhipublicatio https://doi.org/10.1029/2021JC017963 2024-01-11T23:21:35Z Knowledge of the ocean surface layer beneath Antarctic landfast ice is sparse. In this article surface layer turbulent and fine structure are quantified with and without landfast ice at the same West Antarctic Peninsula location. Landfast ice reduced turbulence levels locally to an order of magnitude less than ice-free values, and near-inertial energy and sub-inertial tidal energy levels to less than half their ice-free values. Vertical turbulent heat and nutrient fluxes were, respectively, 6 and 10 times greater than previously estimated. Under-ice tidal energy dissipation over the entire Antarctic continental shelf due to seasonal landfast ice cover is estimated to be between 788 MW to ∼6 GW. The total rate of wind-generated turbulence in the surface ocean is greatly reduced by the presence of seasonal landfast ice to an average of 14% of the ice-free value, but with large sectoral variations. Counter-intuitively, however, tides and wind contribute approximately equally to the turbulent kinetic energy budget of the upper ocean between the Antarctic coastline and the maximal landfast ice extent, with large sectoral variations, attributed to geographic variations in the strength of the barotropic tide Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula University of the Highlands and Islands: Research Database of UHI Antarctic The Antarctic Antarctic Peninsula Journal of Geophysical Research: Oceans 127 1 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
landfast ice turbulence wind tides mixing nutrients |
spellingShingle |
landfast ice turbulence wind tides mixing nutrients Inall, Mark E. Brearley, J. Alexander Henley, Sian F. Fraser, Alexander D. Reed, Sarah Landfast Ice Controls on Turbulence in Antarctic Coastal Seas |
topic_facet |
landfast ice turbulence wind tides mixing nutrients |
description |
Knowledge of the ocean surface layer beneath Antarctic landfast ice is sparse. In this article surface layer turbulent and fine structure are quantified with and without landfast ice at the same West Antarctic Peninsula location. Landfast ice reduced turbulence levels locally to an order of magnitude less than ice-free values, and near-inertial energy and sub-inertial tidal energy levels to less than half their ice-free values. Vertical turbulent heat and nutrient fluxes were, respectively, 6 and 10 times greater than previously estimated. Under-ice tidal energy dissipation over the entire Antarctic continental shelf due to seasonal landfast ice cover is estimated to be between 788 MW to ∼6 GW. The total rate of wind-generated turbulence in the surface ocean is greatly reduced by the presence of seasonal landfast ice to an average of 14% of the ice-free value, but with large sectoral variations. Counter-intuitively, however, tides and wind contribute approximately equally to the turbulent kinetic energy budget of the upper ocean between the Antarctic coastline and the maximal landfast ice extent, with large sectoral variations, attributed to geographic variations in the strength of the barotropic tide |
format |
Article in Journal/Newspaper |
author |
Inall, Mark E. Brearley, J. Alexander Henley, Sian F. Fraser, Alexander D. Reed, Sarah |
author_facet |
Inall, Mark E. Brearley, J. Alexander Henley, Sian F. Fraser, Alexander D. Reed, Sarah |
author_sort |
Inall, Mark E. |
title |
Landfast Ice Controls on Turbulence in Antarctic Coastal Seas |
title_short |
Landfast Ice Controls on Turbulence in Antarctic Coastal Seas |
title_full |
Landfast Ice Controls on Turbulence in Antarctic Coastal Seas |
title_fullStr |
Landfast Ice Controls on Turbulence in Antarctic Coastal Seas |
title_full_unstemmed |
Landfast Ice Controls on Turbulence in Antarctic Coastal Seas |
title_sort |
landfast ice controls on turbulence in antarctic coastal seas |
publishDate |
2022 |
url |
https://pure.uhi.ac.uk/en/publications/f95f0ff1-01d0-4648-88ed-9fe08863a023 https://doi.org/10.1029/2021JC017963 https://pureadmin.uhi.ac.uk/ws/files/17316641/JGR_Oceans_2021_Inall_Landfast_Ice_Controls_on_Turbulence_in_Antarctic_Coastal_Seas.pdf https://onlinelibrary.wiley.com/doi/10.1029/2021JC017963 |
geographic |
Antarctic The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Inall , M E , Brearley , J A , Henley , S F , Fraser , A D & Reed , S 2022 , ' Landfast Ice Controls on Turbulence in Antarctic Coastal Seas ' , Journal of Geophysical Research: Oceans , vol. 127 , no. 1 . https://doi.org/10.1029/2021JC017963 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2021JC017963 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
127 |
container_issue |
1 |
_version_ |
1789969560408948736 |