Shelfbreak circulation in the Alaskan Beaufort Sea : mean structure and variability
Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 109 (2004): C04024, doi:10.1029/2003JC001912. Historical hydro...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/3666 2023-05-15T15:40:17+02:00 Shelfbreak circulation in the Alaskan Beaufort Sea : mean structure and variability Pickart, Robert S. 2004-04-24 application/pdf https://hdl.handle.net/1912/3666 en_US eng American Geophysical Union https://doi.org/10.1029/2003JC001912 Journal of Geophysical Research 109 (2004): C04024 https://hdl.handle.net/1912/3666 doi:10.1029/2003JC001912 Journal of Geophysical Research 109 (2004): C04024 doi:10.1029/2003JC001912 Boundary current Shelfbreak processes Article 2004 ftwhoas https://doi.org/10.1029/2003JC001912 2022-05-28T22:58:02Z Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 109 (2004): C04024, doi:10.1029/2003JC001912. Historical hydrographic and current meter data are used to investigate the properties and circulation at the shelf edge of the Alaskan Beaufort Sea. Thirty-three individual cross-sections, spanning the time period 1950 to 1987, are combined in a topographical framework to produce mean vertical hydrographic sections, as well as a section of mean absolute geostrophic velocity referenced using the current meter data. This reveals the presence of a narrow (order 20 km) eastward current, referred to as the Beaufort shelfbreak jet. The jet has three distinct seasonal configurations: In late-spring to late-summer, cold, winter-transformed Bering water is advected in a subsurface current; from mid-summer to early fall a surface intensified current advects predominantly Bering summer water; and from mid-fall to mid-spring, under easterly winds, the jet transports upwelled Atlantic water. The volume transport of the jet represents a significant fraction of the inflowing transport through Bering Strait. While the characteristics and flow of the winter-transformed Bering water vary interannually, this water mass ventilates predominantly the upper halocline. This work was supported by the Office of Naval Research under contract N00014-98- 1-0046. Article in Journal/Newspaper Beaufort Sea Bering Strait Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Bering Strait Journal of Geophysical Research 109 C4 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Boundary current Shelfbreak processes |
spellingShingle |
Boundary current Shelfbreak processes Pickart, Robert S. Shelfbreak circulation in the Alaskan Beaufort Sea : mean structure and variability |
topic_facet |
Boundary current Shelfbreak processes |
description |
Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 109 (2004): C04024, doi:10.1029/2003JC001912. Historical hydrographic and current meter data are used to investigate the properties and circulation at the shelf edge of the Alaskan Beaufort Sea. Thirty-three individual cross-sections, spanning the time period 1950 to 1987, are combined in a topographical framework to produce mean vertical hydrographic sections, as well as a section of mean absolute geostrophic velocity referenced using the current meter data. This reveals the presence of a narrow (order 20 km) eastward current, referred to as the Beaufort shelfbreak jet. The jet has three distinct seasonal configurations: In late-spring to late-summer, cold, winter-transformed Bering water is advected in a subsurface current; from mid-summer to early fall a surface intensified current advects predominantly Bering summer water; and from mid-fall to mid-spring, under easterly winds, the jet transports upwelled Atlantic water. The volume transport of the jet represents a significant fraction of the inflowing transport through Bering Strait. While the characteristics and flow of the winter-transformed Bering water vary interannually, this water mass ventilates predominantly the upper halocline. This work was supported by the Office of Naval Research under contract N00014-98- 1-0046. |
format |
Article in Journal/Newspaper |
author |
Pickart, Robert S. |
author_facet |
Pickart, Robert S. |
author_sort |
Pickart, Robert S. |
title |
Shelfbreak circulation in the Alaskan Beaufort Sea : mean structure and variability |
title_short |
Shelfbreak circulation in the Alaskan Beaufort Sea : mean structure and variability |
title_full |
Shelfbreak circulation in the Alaskan Beaufort Sea : mean structure and variability |
title_fullStr |
Shelfbreak circulation in the Alaskan Beaufort Sea : mean structure and variability |
title_full_unstemmed |
Shelfbreak circulation in the Alaskan Beaufort Sea : mean structure and variability |
title_sort |
shelfbreak circulation in the alaskan beaufort sea : mean structure and variability |
publisher |
American Geophysical Union |
publishDate |
2004 |
url |
https://hdl.handle.net/1912/3666 |
geographic |
Bering Strait |
geographic_facet |
Bering Strait |
genre |
Beaufort Sea Bering Strait |
genre_facet |
Beaufort Sea Bering Strait |
op_source |
Journal of Geophysical Research 109 (2004): C04024 doi:10.1029/2003JC001912 |
op_relation |
https://doi.org/10.1029/2003JC001912 Journal of Geophysical Research 109 (2004): C04024 https://hdl.handle.net/1912/3666 doi:10.1029/2003JC001912 |
op_doi |
https://doi.org/10.1029/2003JC001912 |
container_title |
Journal of Geophysical Research |
container_volume |
109 |
container_issue |
C4 |
_version_ |
1766372467140460544 |