Variable influx of West Greenland Current water into the Labrador Current through the last 8000 years, based on a multiproxy study from Trinity Bay, NE Newfoundland
This multi-proxy study of marine sediment gravity core AI07-06G from Trinity Bay, Newfoundland, recorded changes in the strength of the Labrador Current (LC) during the Holocene. From ca. 8-5 cal kyr BP, Trinity Bay's seafloor was influenced by cooled Atlantic water derived from the West Greenl...
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2015
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Online Access: | https://pure.au.dk/portal/da/publications/variable-influx-of-west-greenland-current-water-into-the-labrador-current-through-the-last-8000-years-based-on-a-multiproxy-study-from-trinity-bay-ne-newfoundland(aee4df48-9474-4135-a9df-47a4d23a8890).html https://doi.org/10.1007/s41063-015-0010-z |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/aee4df48-9474-4135-a9df-47a4d23a8890 2023-12-31T10:03:41+01:00 Variable influx of West Greenland Current water into the Labrador Current through the last 8000 years, based on a multiproxy study from Trinity Bay, NE Newfoundland Sheldon, Christina Seidenkrantz, Marit-Solveig Frandsen, Paul Jacobsen, Henriette Vinther Van Nieuwenhove, Nicolas Solignac, Sandrine Pearce, Christof Palitzsch, Monica Graae Kuijpers, Antoon 2015-11-20 https://pure.au.dk/portal/da/publications/variable-influx-of-west-greenland-current-water-into-the-labrador-current-through-the-last-8000-years-based-on-a-multiproxy-study-from-trinity-bay-ne-newfoundland(aee4df48-9474-4135-a9df-47a4d23a8890).html https://doi.org/10.1007/s41063-015-0010-z eng eng https://pure.au.dk/portal/da/publications/variable-influx-of-west-greenland-current-water-into-the-labrador-current-through-the-last-8000-years-based-on-a-multiproxy-study-from-trinity-bay-ne-newfoundland(aee4df48-9474-4135-a9df-47a4d23a8890).html info:eu-repo/semantics/restrictedAccess Sheldon , C , Seidenkrantz , M-S , Frandsen , P , Jacobsen , H V , Van Nieuwenhove , N , Solignac , S , Pearce , C , Palitzsch , M G & Kuijpers , A 2015 , ' Variable influx of West Greenland Current water into the Labrador Current through the last 8000 years, based on a multiproxy study from Trinity Bay, NE Newfoundland ' , Arktos , vol. 1 , no. 1 . https://doi.org/10.1007/s41063-015-0010-z Holocene Labrador Current Gulf Stream North Atlantic subpolar gyre Arctic meltwater article 2015 ftuniaarhuspubl https://doi.org/10.1007/s41063-015-0010-z 2023-12-07T00:01:11Z This multi-proxy study of marine sediment gravity core AI07-06G from Trinity Bay, Newfoundland, recorded changes in the strength of the Labrador Current (LC) during the Holocene. From ca. 8-5 cal kyr BP, Trinity Bay's seafloor was influenced by cooled Atlantic water derived from the West Greenland Current (WGC) Davis Strait branch, merging into the relatively cold LC. This Atlantic water influence gradually decreased after ca. 6 cal kyr BP, reaching a minimum at 5 cal kyr BP. In contrast, surface temperatures were relatively low due to cold surface water dominated by sea ice and meltwater carried south by the LC. Icebergs from outlet glaciers around Baffin Bay were abundant in the LC prior to ca. 5.5-6 cal kyr BP. From ca. 5–3.5 cal kyr BP, bottom waters became slightly colder and salinity decreased, as increased mixing of the water column brought less saline surface waters toward the seafloor. This may be explained by a weaker North Atlantic subpolar gyre, transporting less Atlantic Water from the WGC to the (outer) LC. Arctic meltwater transport was reduced as glacial melting decreased at the end of the Holocene Thermal Optimum. At ca. 3 cal kyr BP, bottom waters returned to colder, more stable conditions, indicating a slight decrease in bottom-water ventilation. After ca. 2.2 cal kyr BP surface water temperatures dropped and sea ice flux increased. The seafloor of Trinity Bay saw warmer conditions, consistent with a stronger subpolar gyre and increased influx of Atlantic-sourced water. Article in Journal/Newspaper Arctic Baffin Bay Baffin Bay Baffin Davis Strait Greenland Iceberg* Newfoundland North Atlantic Sea ice Aarhus University: Research arktos 1 1 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Holocene Labrador Current Gulf Stream North Atlantic subpolar gyre Arctic meltwater |
spellingShingle |
Holocene Labrador Current Gulf Stream North Atlantic subpolar gyre Arctic meltwater Sheldon, Christina Seidenkrantz, Marit-Solveig Frandsen, Paul Jacobsen, Henriette Vinther Van Nieuwenhove, Nicolas Solignac, Sandrine Pearce, Christof Palitzsch, Monica Graae Kuijpers, Antoon Variable influx of West Greenland Current water into the Labrador Current through the last 8000 years, based on a multiproxy study from Trinity Bay, NE Newfoundland |
topic_facet |
Holocene Labrador Current Gulf Stream North Atlantic subpolar gyre Arctic meltwater |
description |
This multi-proxy study of marine sediment gravity core AI07-06G from Trinity Bay, Newfoundland, recorded changes in the strength of the Labrador Current (LC) during the Holocene. From ca. 8-5 cal kyr BP, Trinity Bay's seafloor was influenced by cooled Atlantic water derived from the West Greenland Current (WGC) Davis Strait branch, merging into the relatively cold LC. This Atlantic water influence gradually decreased after ca. 6 cal kyr BP, reaching a minimum at 5 cal kyr BP. In contrast, surface temperatures were relatively low due to cold surface water dominated by sea ice and meltwater carried south by the LC. Icebergs from outlet glaciers around Baffin Bay were abundant in the LC prior to ca. 5.5-6 cal kyr BP. From ca. 5–3.5 cal kyr BP, bottom waters became slightly colder and salinity decreased, as increased mixing of the water column brought less saline surface waters toward the seafloor. This may be explained by a weaker North Atlantic subpolar gyre, transporting less Atlantic Water from the WGC to the (outer) LC. Arctic meltwater transport was reduced as glacial melting decreased at the end of the Holocene Thermal Optimum. At ca. 3 cal kyr BP, bottom waters returned to colder, more stable conditions, indicating a slight decrease in bottom-water ventilation. After ca. 2.2 cal kyr BP surface water temperatures dropped and sea ice flux increased. The seafloor of Trinity Bay saw warmer conditions, consistent with a stronger subpolar gyre and increased influx of Atlantic-sourced water. |
format |
Article in Journal/Newspaper |
author |
Sheldon, Christina Seidenkrantz, Marit-Solveig Frandsen, Paul Jacobsen, Henriette Vinther Van Nieuwenhove, Nicolas Solignac, Sandrine Pearce, Christof Palitzsch, Monica Graae Kuijpers, Antoon |
author_facet |
Sheldon, Christina Seidenkrantz, Marit-Solveig Frandsen, Paul Jacobsen, Henriette Vinther Van Nieuwenhove, Nicolas Solignac, Sandrine Pearce, Christof Palitzsch, Monica Graae Kuijpers, Antoon |
author_sort |
Sheldon, Christina |
title |
Variable influx of West Greenland Current water into the Labrador Current through the last 8000 years, based on a multiproxy study from Trinity Bay, NE Newfoundland |
title_short |
Variable influx of West Greenland Current water into the Labrador Current through the last 8000 years, based on a multiproxy study from Trinity Bay, NE Newfoundland |
title_full |
Variable influx of West Greenland Current water into the Labrador Current through the last 8000 years, based on a multiproxy study from Trinity Bay, NE Newfoundland |
title_fullStr |
Variable influx of West Greenland Current water into the Labrador Current through the last 8000 years, based on a multiproxy study from Trinity Bay, NE Newfoundland |
title_full_unstemmed |
Variable influx of West Greenland Current water into the Labrador Current through the last 8000 years, based on a multiproxy study from Trinity Bay, NE Newfoundland |
title_sort |
variable influx of west greenland current water into the labrador current through the last 8000 years, based on a multiproxy study from trinity bay, ne newfoundland |
publishDate |
2015 |
url |
https://pure.au.dk/portal/da/publications/variable-influx-of-west-greenland-current-water-into-the-labrador-current-through-the-last-8000-years-based-on-a-multiproxy-study-from-trinity-bay-ne-newfoundland(aee4df48-9474-4135-a9df-47a4d23a8890).html https://doi.org/10.1007/s41063-015-0010-z |
genre |
Arctic Baffin Bay Baffin Bay Baffin Davis Strait Greenland Iceberg* Newfoundland North Atlantic Sea ice |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Davis Strait Greenland Iceberg* Newfoundland North Atlantic Sea ice |
op_source |
Sheldon , C , Seidenkrantz , M-S , Frandsen , P , Jacobsen , H V , Van Nieuwenhove , N , Solignac , S , Pearce , C , Palitzsch , M G & Kuijpers , A 2015 , ' Variable influx of West Greenland Current water into the Labrador Current through the last 8000 years, based on a multiproxy study from Trinity Bay, NE Newfoundland ' , Arktos , vol. 1 , no. 1 . https://doi.org/10.1007/s41063-015-0010-z |
op_relation |
https://pure.au.dk/portal/da/publications/variable-influx-of-west-greenland-current-water-into-the-labrador-current-through-the-last-8000-years-based-on-a-multiproxy-study-from-trinity-bay-ne-newfoundland(aee4df48-9474-4135-a9df-47a4d23a8890).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s41063-015-0010-z |
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