Atlantic water flow through the Faroese Channels
Through the Faroese Channels – the collective name for a system of channels linking the Faroe–Shetland Channel, Wyville Thomson Basin, and Faroe Bank Channel – there is a deep flow of cold waters from Arctic regions that exit the system as overflow through the Faroe Bank Channel and across the Wyvil...
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Language: | English |
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Copernicus Publications
2017
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Online Access: | https://doi.org/10.5194/os-13-873-2017 https://doaj.org/article/8991f9d54e0e44768cfa320cf98643e7 |
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ftdoajarticles:oai:doaj.org/article:8991f9d54e0e44768cfa320cf98643e7 2023-05-15T15:17:21+02:00 Atlantic water flow through the Faroese Channels B. Hansen T. Poulsen K. M. Húsgarð Larsen H. Hátún S. Østerhus E. Darelius B. Berx D. Quadfasel K. Jochumsen 2017-11-01T00:00:00Z https://doi.org/10.5194/os-13-873-2017 https://doaj.org/article/8991f9d54e0e44768cfa320cf98643e7 EN eng Copernicus Publications https://www.ocean-sci.net/13/873/2017/os-13-873-2017.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-13-873-2017 1812-0784 1812-0792 https://doaj.org/article/8991f9d54e0e44768cfa320cf98643e7 Ocean Science, Vol 13, Pp 873-888 (2017) Geography. Anthropology. Recreation G Environmental sciences GE1-350 article 2017 ftdoajarticles https://doi.org/10.5194/os-13-873-2017 2022-12-31T03:54:34Z Through the Faroese Channels – the collective name for a system of channels linking the Faroe–Shetland Channel, Wyville Thomson Basin, and Faroe Bank Channel – there is a deep flow of cold waters from Arctic regions that exit the system as overflow through the Faroe Bank Channel and across the Wyville Thomson Ridge. The upper layers, in contrast, are dominated by warm, saline water masses from the southwest, termed Atlantic water. In spite of intensive research over more than a century, there are still open questions on the passage of these waters through the system with conflicting views in recent literature. Of special note is the suggestion that there is a flow of Atlantic water from the Faroe–Shetland Channel through the Faroe Bank Channel, which circles the Faroes over the slope region in a clockwise direction. Here, we combine the observational evidence from ship-borne hydrography, moored current measurements, surface drifter tracks, and satellite altimetry to address these questions and propose a general scheme for the Atlantic water flow through this channel system. We find no evidence for a continuous flow of Atlantic water from the Faroe–Shetland Channel to the Faroe Bank Channel over the Faroese slope. Rather, the southwestward-flowing water over the Faroese slope of the Faroe–Shetland Channel is totally recirculated within the combined area of the Faroe–Shetland Channel and Wyville Thomson Basin, except possibly for a small release in the form of eddies. This does not exclude a possible westward flow over the southern tip of the Faroe Shelf, but even including that, we estimate that the average volume transport of a <q>Circum-Faroe Current</q> does not exceed 0.5 Sv (1 Sv = 10 6 m 3 s −1 ). Also, there seems to be a persistent flow of Atlantic water from the western part of the Faroe Bank Channel into the Faroe–Shetland Channel that joins the Slope Current over the Scottish slope. These conclusions will affect potential impacts from offshore activities in the region and they imply that ... Article in Journal/Newspaper Arctic Faroes Directory of Open Access Journals: DOAJ Articles Arctic Faroe Bank ENVELOPE(-8.667,-8.667,60.917,60.917) Wyville Thomson Ridge ENVELOPE(-7.500,-7.500,60.250,60.250) Wyville-Thomson Ridge ENVELOPE(-7.250,-7.250,60.000,60.000) Faroe Shelf ENVELOPE(-6.000,-6.000,62.000,62.000) Ocean Science 13 6 873 888 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
spellingShingle |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 B. Hansen T. Poulsen K. M. Húsgarð Larsen H. Hátún S. Østerhus E. Darelius B. Berx D. Quadfasel K. Jochumsen Atlantic water flow through the Faroese Channels |
topic_facet |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
description |
Through the Faroese Channels – the collective name for a system of channels linking the Faroe–Shetland Channel, Wyville Thomson Basin, and Faroe Bank Channel – there is a deep flow of cold waters from Arctic regions that exit the system as overflow through the Faroe Bank Channel and across the Wyville Thomson Ridge. The upper layers, in contrast, are dominated by warm, saline water masses from the southwest, termed Atlantic water. In spite of intensive research over more than a century, there are still open questions on the passage of these waters through the system with conflicting views in recent literature. Of special note is the suggestion that there is a flow of Atlantic water from the Faroe–Shetland Channel through the Faroe Bank Channel, which circles the Faroes over the slope region in a clockwise direction. Here, we combine the observational evidence from ship-borne hydrography, moored current measurements, surface drifter tracks, and satellite altimetry to address these questions and propose a general scheme for the Atlantic water flow through this channel system. We find no evidence for a continuous flow of Atlantic water from the Faroe–Shetland Channel to the Faroe Bank Channel over the Faroese slope. Rather, the southwestward-flowing water over the Faroese slope of the Faroe–Shetland Channel is totally recirculated within the combined area of the Faroe–Shetland Channel and Wyville Thomson Basin, except possibly for a small release in the form of eddies. This does not exclude a possible westward flow over the southern tip of the Faroe Shelf, but even including that, we estimate that the average volume transport of a <q>Circum-Faroe Current</q> does not exceed 0.5 Sv (1 Sv = 10 6 m 3 s −1 ). Also, there seems to be a persistent flow of Atlantic water from the western part of the Faroe Bank Channel into the Faroe–Shetland Channel that joins the Slope Current over the Scottish slope. These conclusions will affect potential impacts from offshore activities in the region and they imply that ... |
format |
Article in Journal/Newspaper |
author |
B. Hansen T. Poulsen K. M. Húsgarð Larsen H. Hátún S. Østerhus E. Darelius B. Berx D. Quadfasel K. Jochumsen |
author_facet |
B. Hansen T. Poulsen K. M. Húsgarð Larsen H. Hátún S. Østerhus E. Darelius B. Berx D. Quadfasel K. Jochumsen |
author_sort |
B. Hansen |
title |
Atlantic water flow through the Faroese Channels |
title_short |
Atlantic water flow through the Faroese Channels |
title_full |
Atlantic water flow through the Faroese Channels |
title_fullStr |
Atlantic water flow through the Faroese Channels |
title_full_unstemmed |
Atlantic water flow through the Faroese Channels |
title_sort |
atlantic water flow through the faroese channels |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/os-13-873-2017 https://doaj.org/article/8991f9d54e0e44768cfa320cf98643e7 |
long_lat |
ENVELOPE(-8.667,-8.667,60.917,60.917) ENVELOPE(-7.500,-7.500,60.250,60.250) ENVELOPE(-7.250,-7.250,60.000,60.000) ENVELOPE(-6.000,-6.000,62.000,62.000) |
geographic |
Arctic Faroe Bank Wyville Thomson Ridge Wyville-Thomson Ridge Faroe Shelf |
geographic_facet |
Arctic Faroe Bank Wyville Thomson Ridge Wyville-Thomson Ridge Faroe Shelf |
genre |
Arctic Faroes |
genre_facet |
Arctic Faroes |
op_source |
Ocean Science, Vol 13, Pp 873-888 (2017) |
op_relation |
https://www.ocean-sci.net/13/873/2017/os-13-873-2017.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-13-873-2017 1812-0784 1812-0792 https://doaj.org/article/8991f9d54e0e44768cfa320cf98643e7 |
op_doi |
https://doi.org/10.5194/os-13-873-2017 |
container_title |
Ocean Science |
container_volume |
13 |
container_issue |
6 |
container_start_page |
873 |
op_container_end_page |
888 |
_version_ |
1766347604415741952 |