Arctic Ocean outflow and glacier-ocean interactions modify water over the Wandel Sea shelf (northeastern Greenland)
The first-ever conductivity-temperature-depth (CTD) observations on the Wandel Sea shelf in northeastern Greenland were collected in April-May 2015. They were complemented by CTDs taken along the continental slope during the Norwegian FRAM 2014-2015 drift. The CTD profiles are used to reveal the ori...
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2017
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Online Access: | https://pure.au.dk/portal/en/publications/d5cdc4a7-5cf5-45c3-a548-fd7805646ffd https://doi.org/10.5194/os-13-1045-2017 https://pure.au.dk/ws/files/119940733/os_13_1045_2017.pdf |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/d5cdc4a7-5cf5-45c3-a548-fd7805646ffd 2024-04-28T08:04:32+00:00 Arctic Ocean outflow and glacier-ocean interactions modify water over the Wandel Sea shelf (northeastern Greenland) Dmitrenko, Igor A. Kirillov, Sergey A. Rudels, Bert Babb, David G. Pedersen, Leif Toudal Rysgaard, Soren Kristoffersen, Yngve Barber, David G. 2017-12-11 application/pdf https://pure.au.dk/portal/en/publications/d5cdc4a7-5cf5-45c3-a548-fd7805646ffd https://doi.org/10.5194/os-13-1045-2017 https://pure.au.dk/ws/files/119940733/os_13_1045_2017.pdf eng eng https://pure.au.dk/portal/en/publications/d5cdc4a7-5cf5-45c3-a548-fd7805646ffd info:eu-repo/semantics/openAccess Dmitrenko , I A , Kirillov , S A , Rudels , B , Babb , D G , Pedersen , L T , Rysgaard , S , Kristoffersen , Y & Barber , D G 2017 , ' Arctic Ocean outflow and glacier-ocean interactions modify water over the Wandel Sea shelf (northeastern Greenland) ' , Ocean Science , vol. 13 , no. 6 , pp. 1045-1060 . https://doi.org/10.5194/os-13-1045-2017 DENMARK STRAIT OVERFLOW PACIFIC WATER NORTH-ATLANTIC NE-GREENLAND NORDIC SEAS FRESH-WATER CIRCULATION ORIGIN FJORD HALOCLINE article 2017 ftuniaarhuspubl https://doi.org/10.5194/os-13-1045-2017 2024-04-04T16:53:37Z The first-ever conductivity-temperature-depth (CTD) observations on the Wandel Sea shelf in northeastern Greenland were collected in April-May 2015. They were complemented by CTDs taken along the continental slope during the Norwegian FRAM 2014-2015 drift. The CTD profiles are used to reveal the origin of water masses and interactions with ambient water from the continental slope and the tidewater glacier outlet. The subsurface water is associated with the Pacific water outflow from the Arctic Ocean. The underlying halocline separates the Pacific water from a deeper layer of polar water that has interacted with the warm Atlantic water outflow through the Fram Strait, recorded below 140 m. Over the outer shelf, the halocline shows numerous cold density-compensated intrusions indicating lateral interaction with an ambient polar water mass across the continental slope. At the front of the tidewater glacier outlet, colder and turbid water intrusions were observed at the base of the halocline. On the temperature-salinity plots these stations indicate a mixing line that is different from the ambient water and seems to be conditioned by the ocean-glacier interaction. Our observations of Pacific water are set within the context of upstream observations in the Beaufort Sea and downstream observations from the Northeast Water Polynya, and clearly show the modification of Pacific water during its advection across the Arctic Ocean. Moreover, ambient water over the Wandel Sea slope shows different thermohaline structures indicating the different origin and pathways of the on-shore and off-shore branches of the Arctic Ocean outflow through the western Fram Strait. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Beaufort Sea Denmark Strait Fram Strait glacier Greenland Nordic Seas North Atlantic Tidewater Wandel Sea Aarhus University: Research Ocean Science 13 6 1045 1060 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
DENMARK STRAIT OVERFLOW PACIFIC WATER NORTH-ATLANTIC NE-GREENLAND NORDIC SEAS FRESH-WATER CIRCULATION ORIGIN FJORD HALOCLINE |
spellingShingle |
DENMARK STRAIT OVERFLOW PACIFIC WATER NORTH-ATLANTIC NE-GREENLAND NORDIC SEAS FRESH-WATER CIRCULATION ORIGIN FJORD HALOCLINE Dmitrenko, Igor A. Kirillov, Sergey A. Rudels, Bert Babb, David G. Pedersen, Leif Toudal Rysgaard, Soren Kristoffersen, Yngve Barber, David G. Arctic Ocean outflow and glacier-ocean interactions modify water over the Wandel Sea shelf (northeastern Greenland) |
topic_facet |
DENMARK STRAIT OVERFLOW PACIFIC WATER NORTH-ATLANTIC NE-GREENLAND NORDIC SEAS FRESH-WATER CIRCULATION ORIGIN FJORD HALOCLINE |
description |
The first-ever conductivity-temperature-depth (CTD) observations on the Wandel Sea shelf in northeastern Greenland were collected in April-May 2015. They were complemented by CTDs taken along the continental slope during the Norwegian FRAM 2014-2015 drift. The CTD profiles are used to reveal the origin of water masses and interactions with ambient water from the continental slope and the tidewater glacier outlet. The subsurface water is associated with the Pacific water outflow from the Arctic Ocean. The underlying halocline separates the Pacific water from a deeper layer of polar water that has interacted with the warm Atlantic water outflow through the Fram Strait, recorded below 140 m. Over the outer shelf, the halocline shows numerous cold density-compensated intrusions indicating lateral interaction with an ambient polar water mass across the continental slope. At the front of the tidewater glacier outlet, colder and turbid water intrusions were observed at the base of the halocline. On the temperature-salinity plots these stations indicate a mixing line that is different from the ambient water and seems to be conditioned by the ocean-glacier interaction. Our observations of Pacific water are set within the context of upstream observations in the Beaufort Sea and downstream observations from the Northeast Water Polynya, and clearly show the modification of Pacific water during its advection across the Arctic Ocean. Moreover, ambient water over the Wandel Sea slope shows different thermohaline structures indicating the different origin and pathways of the on-shore and off-shore branches of the Arctic Ocean outflow through the western Fram Strait. |
format |
Article in Journal/Newspaper |
author |
Dmitrenko, Igor A. Kirillov, Sergey A. Rudels, Bert Babb, David G. Pedersen, Leif Toudal Rysgaard, Soren Kristoffersen, Yngve Barber, David G. |
author_facet |
Dmitrenko, Igor A. Kirillov, Sergey A. Rudels, Bert Babb, David G. Pedersen, Leif Toudal Rysgaard, Soren Kristoffersen, Yngve Barber, David G. |
author_sort |
Dmitrenko, Igor A. |
title |
Arctic Ocean outflow and glacier-ocean interactions modify water over the Wandel Sea shelf (northeastern Greenland) |
title_short |
Arctic Ocean outflow and glacier-ocean interactions modify water over the Wandel Sea shelf (northeastern Greenland) |
title_full |
Arctic Ocean outflow and glacier-ocean interactions modify water over the Wandel Sea shelf (northeastern Greenland) |
title_fullStr |
Arctic Ocean outflow and glacier-ocean interactions modify water over the Wandel Sea shelf (northeastern Greenland) |
title_full_unstemmed |
Arctic Ocean outflow and glacier-ocean interactions modify water over the Wandel Sea shelf (northeastern Greenland) |
title_sort |
arctic ocean outflow and glacier-ocean interactions modify water over the wandel sea shelf (northeastern greenland) |
publishDate |
2017 |
url |
https://pure.au.dk/portal/en/publications/d5cdc4a7-5cf5-45c3-a548-fd7805646ffd https://doi.org/10.5194/os-13-1045-2017 https://pure.au.dk/ws/files/119940733/os_13_1045_2017.pdf |
genre |
Arctic Arctic Arctic Ocean Beaufort Sea Denmark Strait Fram Strait glacier Greenland Nordic Seas North Atlantic Tidewater Wandel Sea |
genre_facet |
Arctic Arctic Arctic Ocean Beaufort Sea Denmark Strait Fram Strait glacier Greenland Nordic Seas North Atlantic Tidewater Wandel Sea |
op_source |
Dmitrenko , I A , Kirillov , S A , Rudels , B , Babb , D G , Pedersen , L T , Rysgaard , S , Kristoffersen , Y & Barber , D G 2017 , ' Arctic Ocean outflow and glacier-ocean interactions modify water over the Wandel Sea shelf (northeastern Greenland) ' , Ocean Science , vol. 13 , no. 6 , pp. 1045-1060 . https://doi.org/10.5194/os-13-1045-2017 |
op_relation |
https://pure.au.dk/portal/en/publications/d5cdc4a7-5cf5-45c3-a548-fd7805646ffd |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/os-13-1045-2017 |
container_title |
Ocean Science |
container_volume |
13 |
container_issue |
6 |
container_start_page |
1045 |
op_container_end_page |
1060 |
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1797575146187259904 |