Frontal structures associated with coastal upwelling and ice-edge subduction events in southern Beaufort Sea during the Canadian Arctic Shelf Exchange Study.
The near-surface temperature structure in the southeastern Beaufort Sea is shown to have been largely dependent on frontal dynamics in spring 2004, which may be typical for the region. Easterly wind events generated coastal upwelling along the Cap Bathurst peninsula; a recurring event in that area....
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | https://espace.inrs.ca/id/eprint/3935/ https://espace.inrs.ca/id/eprint/3935/1/P2920.pdf https://doi.org/10.1002/2014JC010641 |
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ftinrsquebec:oai:espace.inrs.ca:3935 2023-05-15T13:22:52+02:00 Frontal structures associated with coastal upwelling and ice-edge subduction events in southern Beaufort Sea during the Canadian Arctic Shelf Exchange Study. Sévigny, Caroline Gratton, Yves Galbraith, Peter S. 2015 application/pdf https://espace.inrs.ca/id/eprint/3935/ https://espace.inrs.ca/id/eprint/3935/1/P2920.pdf https://doi.org/10.1002/2014JC010641 en eng https://espace.inrs.ca/id/eprint/3935/1/P2920.pdf Sévigny, Caroline, Gratton, Yves et Galbraith, Peter S. (2015). Frontal structures associated with coastal upwelling and ice-edge subduction events in southern Beaufort Sea during the Canadian Arctic Shelf Exchange Study. Journal of Geophysical Research: Oceans , vol. 120 , nº 4. p. 2523-2539. DOI:10.1002/2014JC010641 <https://doi.org/10.1002/2014JC010641>. doi:10.1002/2014JC010641 coastal upwelling frontal processes near-surface intrusions southeastern Beaufort Sea subduction surface frontogenesis Article Évalué par les pairs 2015 ftinrsquebec https://doi.org/10.1002/2014JC010641 2023-02-10T11:42:46Z The near-surface temperature structure in the southeastern Beaufort Sea is shown to have been largely dependent on frontal dynamics in spring 2004, which may be typical for the region. Easterly wind events generated coastal upwelling along the Cap Bathurst peninsula; a recurring event in that area. Further west, a large mesoscale anticyclone simultaneously developed and subsequently controlled the sea surface circulation in the central Amundsen Gulf. Sharp temperature and density fronts were created at the surface at both eastern and western ends of the domain. Sampling north of Cape Bathurst and Cape Parry showed evidence of frontal intensification. Frontal features were detected near the 50–200-m isobaths, at the mouth of the gulf, where density-compensated near-surface intrusions driven by agesotrophic vertical circulation were identified. These warm water tongues intruded into the outcropping isopycnal layers, which dipped down between 5 and 25 m over the Mackenzie Shelf. They then crossed the density surfaces with an inverse slope consistent with N/f as predicted for quasi-geostrophic flows. The front event ended prior to the breakup of the landfast-ice bridge in late June with sea-surface temperature undergoing quick and widespread changes throughout the Amundsen Gulf. Article in Journal/Newspaper Amundsen Gulf Arctic Arctic Beaufort Sea Cape Bathurst Cape Parry Mackenzie Shelf Institut national de la recherche scientifique, Québec: Espace INRS Arctic Parry ENVELOPE(-62.417,-62.417,-64.283,-64.283) Cape Bathurst ENVELOPE(-128.068,-128.068,70.579,70.579) Cape Parry ENVELOPE(-124.672,-124.672,70.151,70.151) Journal of Geophysical Research: Oceans 120 4 2523 2539 |
institution |
Open Polar |
collection |
Institut national de la recherche scientifique, Québec: Espace INRS |
op_collection_id |
ftinrsquebec |
language |
English |
topic |
coastal upwelling frontal processes near-surface intrusions southeastern Beaufort Sea subduction surface frontogenesis |
spellingShingle |
coastal upwelling frontal processes near-surface intrusions southeastern Beaufort Sea subduction surface frontogenesis Sévigny, Caroline Gratton, Yves Galbraith, Peter S. Frontal structures associated with coastal upwelling and ice-edge subduction events in southern Beaufort Sea during the Canadian Arctic Shelf Exchange Study. |
topic_facet |
coastal upwelling frontal processes near-surface intrusions southeastern Beaufort Sea subduction surface frontogenesis |
description |
The near-surface temperature structure in the southeastern Beaufort Sea is shown to have been largely dependent on frontal dynamics in spring 2004, which may be typical for the region. Easterly wind events generated coastal upwelling along the Cap Bathurst peninsula; a recurring event in that area. Further west, a large mesoscale anticyclone simultaneously developed and subsequently controlled the sea surface circulation in the central Amundsen Gulf. Sharp temperature and density fronts were created at the surface at both eastern and western ends of the domain. Sampling north of Cape Bathurst and Cape Parry showed evidence of frontal intensification. Frontal features were detected near the 50–200-m isobaths, at the mouth of the gulf, where density-compensated near-surface intrusions driven by agesotrophic vertical circulation were identified. These warm water tongues intruded into the outcropping isopycnal layers, which dipped down between 5 and 25 m over the Mackenzie Shelf. They then crossed the density surfaces with an inverse slope consistent with N/f as predicted for quasi-geostrophic flows. The front event ended prior to the breakup of the landfast-ice bridge in late June with sea-surface temperature undergoing quick and widespread changes throughout the Amundsen Gulf. |
format |
Article in Journal/Newspaper |
author |
Sévigny, Caroline Gratton, Yves Galbraith, Peter S. |
author_facet |
Sévigny, Caroline Gratton, Yves Galbraith, Peter S. |
author_sort |
Sévigny, Caroline |
title |
Frontal structures associated with coastal upwelling and ice-edge subduction events in southern Beaufort Sea during the Canadian Arctic Shelf Exchange Study. |
title_short |
Frontal structures associated with coastal upwelling and ice-edge subduction events in southern Beaufort Sea during the Canadian Arctic Shelf Exchange Study. |
title_full |
Frontal structures associated with coastal upwelling and ice-edge subduction events in southern Beaufort Sea during the Canadian Arctic Shelf Exchange Study. |
title_fullStr |
Frontal structures associated with coastal upwelling and ice-edge subduction events in southern Beaufort Sea during the Canadian Arctic Shelf Exchange Study. |
title_full_unstemmed |
Frontal structures associated with coastal upwelling and ice-edge subduction events in southern Beaufort Sea during the Canadian Arctic Shelf Exchange Study. |
title_sort |
frontal structures associated with coastal upwelling and ice-edge subduction events in southern beaufort sea during the canadian arctic shelf exchange study. |
publishDate |
2015 |
url |
https://espace.inrs.ca/id/eprint/3935/ https://espace.inrs.ca/id/eprint/3935/1/P2920.pdf https://doi.org/10.1002/2014JC010641 |
long_lat |
ENVELOPE(-62.417,-62.417,-64.283,-64.283) ENVELOPE(-128.068,-128.068,70.579,70.579) ENVELOPE(-124.672,-124.672,70.151,70.151) |
geographic |
Arctic Parry Cape Bathurst Cape Parry |
geographic_facet |
Arctic Parry Cape Bathurst Cape Parry |
genre |
Amundsen Gulf Arctic Arctic Beaufort Sea Cape Bathurst Cape Parry Mackenzie Shelf |
genre_facet |
Amundsen Gulf Arctic Arctic Beaufort Sea Cape Bathurst Cape Parry Mackenzie Shelf |
op_relation |
https://espace.inrs.ca/id/eprint/3935/1/P2920.pdf Sévigny, Caroline, Gratton, Yves et Galbraith, Peter S. (2015). Frontal structures associated with coastal upwelling and ice-edge subduction events in southern Beaufort Sea during the Canadian Arctic Shelf Exchange Study. Journal of Geophysical Research: Oceans , vol. 120 , nº 4. p. 2523-2539. DOI:10.1002/2014JC010641 <https://doi.org/10.1002/2014JC010641>. doi:10.1002/2014JC010641 |
op_doi |
https://doi.org/10.1002/2014JC010641 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
120 |
container_issue |
4 |
container_start_page |
2523 |
op_container_end_page |
2539 |
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1766367558444777472 |