The Inferred Formation of a Subice Platelet Layer Below the Multiyear Landfast Sea Ice in the Wandel Sea (NE Greenland) Induced by Meltwater Drainage
Oceanographic and ice-mass-balance records are presented from two moorings deployed on landfast multiyear ice in the Wandel Sea (North Greenland) during June-August 2015. Here we show that the melting and drainage of >1 m of snow from June 14 to July 14 created a double-diffusive vertical stratif...
Published in: | Journal of Geophysical Research: Oceans |
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Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2018
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Online Access: | https://pure.au.dk/portal/en/publications/492669d1-699c-4ce9-84a4-4a9736f832db https://doi.org/10.1029/2017JC013672 https://pure.au.dk/ws/files/178481951/The_inferred_formation_of_a_subice_platelet_layer_below_the_multiyear_landfast_sea_ice_in_the_Wandel_Sea_NE_Greenland_induced_by_meltwater_drainage.pdf |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/492669d1-699c-4ce9-84a4-4a9736f832db 2024-05-12T07:56:40+00:00 The Inferred Formation of a Subice Platelet Layer Below the Multiyear Landfast Sea Ice in the Wandel Sea (NE Greenland) Induced by Meltwater Drainage Kirillov, S. Dmitrenko, I. Rysgaard, S. Babb, D. Ehn, J. Bendtsen, J. Boone, W. Barber, D. Geilfus, N. 2018-05 application/pdf https://pure.au.dk/portal/en/publications/492669d1-699c-4ce9-84a4-4a9736f832db https://doi.org/10.1029/2017JC013672 https://pure.au.dk/ws/files/178481951/The_inferred_formation_of_a_subice_platelet_layer_below_the_multiyear_landfast_sea_ice_in_the_Wandel_Sea_NE_Greenland_induced_by_meltwater_drainage.pdf eng eng https://pure.au.dk/portal/en/publications/492669d1-699c-4ce9-84a4-4a9736f832db info:eu-repo/semantics/openAccess Kirillov , S , Dmitrenko , I , Rysgaard , S , Babb , D , Ehn , J , Bendtsen , J , Boone , W , Barber , D & Geilfus , N 2018 , ' The Inferred Formation of a Subice Platelet Layer Below the Multiyear Landfast Sea Ice in the Wandel Sea (NE Greenland) Induced by Meltwater Drainage ' , Journal of Geophysical Research: Oceans , vol. 123 , no. 5 , pp. 3489-3506 . https://doi.org/10.1029/2017JC013672 EPISHELF LAKE WEDDELL SEA HEAT-FLUX SHELF OCEAN WATER EVOLUTION THICKNESS GROWTH COVER article 2018 ftuniaarhuspubl https://doi.org/10.1029/2017JC013672 2024-04-17T23:42:41Z Oceanographic and ice-mass-balance records are presented from two moorings deployed on landfast multiyear ice in the Wandel Sea (North Greenland) during June-August 2015. Here we show that the melting and drainage of >1 m of snow from June 14 to July 14 created a double-diffusive vertical stratification which resulted in supercooling of water and enabled the formation of platelet crystals below the sea ice. Although the effect of supercooling, with temperatures up to 0.58C below the freezing point, might be overestimated considerably in our records, this process led to the formation of ~1.1-1.2 m-thick subice platelet layer. While warm water temperatures lead to the complete loss of this layer at one mooring site, the layer persisted through summer and became incorporated into the congelation ice at the second site. The warm water that melted out the platelet layer can be ascribed to two different sources: (1) in situ heating from solar radiation resulting in a temperature increase up to 0.88C in late July and (2) advection of warm surface water (with temperatures up to 3-4°C) from the ice-free coastal regions in mid-August. The combination of processes causing the seasonal growth of a platelet layer and either its subsequent ablation or incorporation into congelation ice is discussed with respect to the ice-mass balance and stability of the landfast ice cover in the Wandel Sea. Furthermore, this study provides evidence for the formation of a platelet layer in the Arctic, a phenomenon that historically has only been observed in the Antarctic. Article in Journal/Newspaper Antarc* Antarctic Arctic Greenland North Greenland Sea ice Wandel Sea Weddell Sea Aarhus University: Research Antarctic Arctic Greenland The Antarctic Wandel ENVELOPE(-64.000,-64.000,-65.083,-65.083) Weddell Weddell Sea Journal of Geophysical Research: Oceans 123 5 3489 3506 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
EPISHELF LAKE WEDDELL SEA HEAT-FLUX SHELF OCEAN WATER EVOLUTION THICKNESS GROWTH COVER |
spellingShingle |
EPISHELF LAKE WEDDELL SEA HEAT-FLUX SHELF OCEAN WATER EVOLUTION THICKNESS GROWTH COVER Kirillov, S. Dmitrenko, I. Rysgaard, S. Babb, D. Ehn, J. Bendtsen, J. Boone, W. Barber, D. Geilfus, N. The Inferred Formation of a Subice Platelet Layer Below the Multiyear Landfast Sea Ice in the Wandel Sea (NE Greenland) Induced by Meltwater Drainage |
topic_facet |
EPISHELF LAKE WEDDELL SEA HEAT-FLUX SHELF OCEAN WATER EVOLUTION THICKNESS GROWTH COVER |
description |
Oceanographic and ice-mass-balance records are presented from two moorings deployed on landfast multiyear ice in the Wandel Sea (North Greenland) during June-August 2015. Here we show that the melting and drainage of >1 m of snow from June 14 to July 14 created a double-diffusive vertical stratification which resulted in supercooling of water and enabled the formation of platelet crystals below the sea ice. Although the effect of supercooling, with temperatures up to 0.58C below the freezing point, might be overestimated considerably in our records, this process led to the formation of ~1.1-1.2 m-thick subice platelet layer. While warm water temperatures lead to the complete loss of this layer at one mooring site, the layer persisted through summer and became incorporated into the congelation ice at the second site. The warm water that melted out the platelet layer can be ascribed to two different sources: (1) in situ heating from solar radiation resulting in a temperature increase up to 0.88C in late July and (2) advection of warm surface water (with temperatures up to 3-4°C) from the ice-free coastal regions in mid-August. The combination of processes causing the seasonal growth of a platelet layer and either its subsequent ablation or incorporation into congelation ice is discussed with respect to the ice-mass balance and stability of the landfast ice cover in the Wandel Sea. Furthermore, this study provides evidence for the formation of a platelet layer in the Arctic, a phenomenon that historically has only been observed in the Antarctic. |
format |
Article in Journal/Newspaper |
author |
Kirillov, S. Dmitrenko, I. Rysgaard, S. Babb, D. Ehn, J. Bendtsen, J. Boone, W. Barber, D. Geilfus, N. |
author_facet |
Kirillov, S. Dmitrenko, I. Rysgaard, S. Babb, D. Ehn, J. Bendtsen, J. Boone, W. Barber, D. Geilfus, N. |
author_sort |
Kirillov, S. |
title |
The Inferred Formation of a Subice Platelet Layer Below the Multiyear Landfast Sea Ice in the Wandel Sea (NE Greenland) Induced by Meltwater Drainage |
title_short |
The Inferred Formation of a Subice Platelet Layer Below the Multiyear Landfast Sea Ice in the Wandel Sea (NE Greenland) Induced by Meltwater Drainage |
title_full |
The Inferred Formation of a Subice Platelet Layer Below the Multiyear Landfast Sea Ice in the Wandel Sea (NE Greenland) Induced by Meltwater Drainage |
title_fullStr |
The Inferred Formation of a Subice Platelet Layer Below the Multiyear Landfast Sea Ice in the Wandel Sea (NE Greenland) Induced by Meltwater Drainage |
title_full_unstemmed |
The Inferred Formation of a Subice Platelet Layer Below the Multiyear Landfast Sea Ice in the Wandel Sea (NE Greenland) Induced by Meltwater Drainage |
title_sort |
inferred formation of a subice platelet layer below the multiyear landfast sea ice in the wandel sea (ne greenland) induced by meltwater drainage |
publishDate |
2018 |
url |
https://pure.au.dk/portal/en/publications/492669d1-699c-4ce9-84a4-4a9736f832db https://doi.org/10.1029/2017JC013672 https://pure.au.dk/ws/files/178481951/The_inferred_formation_of_a_subice_platelet_layer_below_the_multiyear_landfast_sea_ice_in_the_Wandel_Sea_NE_Greenland_induced_by_meltwater_drainage.pdf |
long_lat |
ENVELOPE(-64.000,-64.000,-65.083,-65.083) |
geographic |
Antarctic Arctic Greenland The Antarctic Wandel Weddell Weddell Sea |
geographic_facet |
Antarctic Arctic Greenland The Antarctic Wandel Weddell Weddell Sea |
genre |
Antarc* Antarctic Arctic Greenland North Greenland Sea ice Wandel Sea Weddell Sea |
genre_facet |
Antarc* Antarctic Arctic Greenland North Greenland Sea ice Wandel Sea Weddell Sea |
op_source |
Kirillov , S , Dmitrenko , I , Rysgaard , S , Babb , D , Ehn , J , Bendtsen , J , Boone , W , Barber , D & Geilfus , N 2018 , ' The Inferred Formation of a Subice Platelet Layer Below the Multiyear Landfast Sea Ice in the Wandel Sea (NE Greenland) Induced by Meltwater Drainage ' , Journal of Geophysical Research: Oceans , vol. 123 , no. 5 , pp. 3489-3506 . https://doi.org/10.1029/2017JC013672 |
op_relation |
https://pure.au.dk/portal/en/publications/492669d1-699c-4ce9-84a4-4a9736f832db |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2017JC013672 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
123 |
container_issue |
5 |
container_start_page |
3489 |
op_container_end_page |
3506 |
_version_ |
1798836865391919104 |