Role of cabbeling in water densification in the Greenland Basin
The effects of cabbeling mixing on water mass modification in the Greenland Sea were explored by hydrographic observations across the Greenland Basin in summer 2006. The neutral surface was chosen as a reference frame, and the strength of cabbeling mixing was quantified by the dianeutral velocity ma...
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ftcopernicus:oai:publications.copernicus.org:os6971 2023-05-15T15:00:30+02:00 Role of cabbeling in water densification in the Greenland Basin Kasajima, Y. Johannessen, T. 2018-01-15 application/pdf https://doi.org/10.5194/os-5-247-2009 https://os.copernicus.org/articles/5/247/2009/ eng eng doi:10.5194/os-5-247-2009 https://os.copernicus.org/articles/5/247/2009/ eISSN: 1812-0792 Text 2018 ftcopernicus https://doi.org/10.5194/os-5-247-2009 2020-07-20T16:26:38Z The effects of cabbeling mixing on water mass modification in the Greenland Sea were explored by hydrographic observations across the Greenland Basin in summer 2006. The neutral surface was chosen as a reference frame, and the strength of cabbeling mixing was quantified by the dianeutral velocity magnitude. Active cabbeling spots were detected with the criterion of the velocity magnitude >1 m/day, and four active cabbeling areas were identified; the west of Bear Island (SB), the Arctic Frontal Zone (AFZ), the central Greenland Sea (CG) and the western Greenland Sea (WG). The most vigorous cabbeling mixing was found at SB, where warm North Atlantic Water (NAW) mixed with cold water from the Barents Sea, inducing a maximum velocity of 7.5 m/day and a maximum density gain of 4.7×10 −3 kg/m 3 . At AFZ and CG, the mixing took place between NAW, modified NAW and Arctic Intermediate Water (AIW), and the density gain at these fronts were 1.5×10 −3 kg/m 3 (AFZ) and 1.3×10 −3 kg/m 3 (CG). In the western Greenland Sea, the active cabbeling spots were widely separated and mixing appeared to be rather weak, with a maximum velocity of 2.5 m/day. The mixing source waters at WG were modified NAW, AIW and even denser water, and the density gain in this area was 0.4×10 −3 kg/m 3 . The deepest mixing produced water whose density is equivalent to that of the dense water of the basin, indicating that cabbeling in the western Greenland Sea contributed directly to basin-scale water densification. The water mass modification rate was the highest at AFZ (about 8.0 Sv), suggesting that cabbeling may play an important role in water transformation in the Greenland Basin. Text Arctic Barents Sea Bear Island Greenland Greenland Sea North Atlantic Copernicus Publications: E-Journals Arctic Barents Sea Bear Island ENVELOPE(-67.250,-67.250,-68.151,-68.151) Greenland Greenland Basin ENVELOPE(-5.000,-5.000,73.500,73.500) Ocean Science 5 3 247 257 |
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Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
The effects of cabbeling mixing on water mass modification in the Greenland Sea were explored by hydrographic observations across the Greenland Basin in summer 2006. The neutral surface was chosen as a reference frame, and the strength of cabbeling mixing was quantified by the dianeutral velocity magnitude. Active cabbeling spots were detected with the criterion of the velocity magnitude >1 m/day, and four active cabbeling areas were identified; the west of Bear Island (SB), the Arctic Frontal Zone (AFZ), the central Greenland Sea (CG) and the western Greenland Sea (WG). The most vigorous cabbeling mixing was found at SB, where warm North Atlantic Water (NAW) mixed with cold water from the Barents Sea, inducing a maximum velocity of 7.5 m/day and a maximum density gain of 4.7×10 −3 kg/m 3 . At AFZ and CG, the mixing took place between NAW, modified NAW and Arctic Intermediate Water (AIW), and the density gain at these fronts were 1.5×10 −3 kg/m 3 (AFZ) and 1.3×10 −3 kg/m 3 (CG). In the western Greenland Sea, the active cabbeling spots were widely separated and mixing appeared to be rather weak, with a maximum velocity of 2.5 m/day. The mixing source waters at WG were modified NAW, AIW and even denser water, and the density gain in this area was 0.4×10 −3 kg/m 3 . The deepest mixing produced water whose density is equivalent to that of the dense water of the basin, indicating that cabbeling in the western Greenland Sea contributed directly to basin-scale water densification. The water mass modification rate was the highest at AFZ (about 8.0 Sv), suggesting that cabbeling may play an important role in water transformation in the Greenland Basin. |
format |
Text |
author |
Kasajima, Y. Johannessen, T. |
spellingShingle |
Kasajima, Y. Johannessen, T. Role of cabbeling in water densification in the Greenland Basin |
author_facet |
Kasajima, Y. Johannessen, T. |
author_sort |
Kasajima, Y. |
title |
Role of cabbeling in water densification in the Greenland Basin |
title_short |
Role of cabbeling in water densification in the Greenland Basin |
title_full |
Role of cabbeling in water densification in the Greenland Basin |
title_fullStr |
Role of cabbeling in water densification in the Greenland Basin |
title_full_unstemmed |
Role of cabbeling in water densification in the Greenland Basin |
title_sort |
role of cabbeling in water densification in the greenland basin |
publishDate |
2018 |
url |
https://doi.org/10.5194/os-5-247-2009 https://os.copernicus.org/articles/5/247/2009/ |
long_lat |
ENVELOPE(-67.250,-67.250,-68.151,-68.151) ENVELOPE(-5.000,-5.000,73.500,73.500) |
geographic |
Arctic Barents Sea Bear Island Greenland Greenland Basin |
geographic_facet |
Arctic Barents Sea Bear Island Greenland Greenland Basin |
genre |
Arctic Barents Sea Bear Island Greenland Greenland Sea North Atlantic |
genre_facet |
Arctic Barents Sea Bear Island Greenland Greenland Sea North Atlantic |
op_source |
eISSN: 1812-0792 |
op_relation |
doi:10.5194/os-5-247-2009 https://os.copernicus.org/articles/5/247/2009/ |
op_doi |
https://doi.org/10.5194/os-5-247-2009 |
container_title |
Ocean Science |
container_volume |
5 |
container_issue |
3 |
container_start_page |
247 |
op_container_end_page |
257 |
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1766332594301960192 |