A review of the deep and surface currents around Eirik Drift, south of Greenland: Comparison of the past with the present
The global Thermohaline Circulation (THC) is primarily driven by the cooling and sinking of northward flowing North Atlantic surface waters in the Nordic Seas to form North Atlantic Deep Water (NADW) that flows southward as a component of the Deep Western Boundary Current (DWBC). It is widely accept...
Published in: | Global and Planetary Change |
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/84894 2024-01-14T10:06:07+01:00 A review of the deep and surface currents around Eirik Drift, south of Greenland: Comparison of the past with the present Stanford, J D Rohling, Eelco Bacon, S. Holliday, N. P http://hdl.handle.net/1885/84894 https://doi.org/10.1016/j.gloplacha.2011.02.001 https://openresearch-repository.anu.edu.au/bitstream/1885/84894/5/Rohling_E_2011_A_review.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/84894/7/01_Stanford_A_review_of_the_deep_and_2011.pdf.jpg unknown Elsevier 0921-8181 http://hdl.handle.net/1885/84894 doi:10.1016/j.gloplacha.2011.02.001 https://openresearch-repository.anu.edu.au/bitstream/1885/84894/5/Rohling_E_2011_A_review.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/84894/7/01_Stanford_A_review_of_the_deep_and_2011.pdf.jpg Global and Planetary Change Keywords: Bottom current Deep Water Deep western boundary currents Deglaciations Eirik Drift Flow intensity Geophysical data Global thermohaline circulation Greenland Hydrographic profiles Marine sediments Multi-disciplinary Nordic seas North Atlantic Deep Western Boundary Current North Atlantic Deep Water Thermohaline Circulation Journal article ftanucanberra https://doi.org/10.1016/j.gloplacha.2011.02.001 2023-12-15T09:35:05Z The global Thermohaline Circulation (THC) is primarily driven by the cooling and sinking of northward flowing North Atlantic surface waters in the Nordic Seas to form North Atlantic Deep Water (NADW) that flows southward as a component of the Deep Western Boundary Current (DWBC). It is widely accepted that major freshwater injections have disrupted the formation of NADW in the past, causing widespread cooling over the North Atlantic. Eirik Drift, a contourite south of Greenland, was formed from deposition of sediments carried in the DWBC, so contains information about DWBC variability. Before now, the spatial and temporal variability of the surface and deep water currents, and their relationship with the associated sedimentation have not been fully understood. Here, we present a review of the key findings from the RAPID Cape Farewell project at Eirik Drift, a multi-disciplinary study which included hydrographic profiles, sub-bottom and sea-floor geophysical data, and multi-proxy analyses of a marine sediment core. We use these previously published results to further elucidate the oceanographic processes above Eirik Drift and relate these results to the sedimentation patterns. We also resolve, using a down-core record of NADW flow intensity, how bottom currents in this region changed in association with freshwater forcing during the last deglaciation. Article in Journal/Newspaper Cape Farewell Greenland NADW Nordic Seas North Atlantic Deep Water North Atlantic Australian National University: ANU Digital Collections Greenland Global and Planetary Change 79 3-4 244 254 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: Bottom current Deep Water Deep western boundary currents Deglaciations Eirik Drift Flow intensity Geophysical data Global thermohaline circulation Greenland Hydrographic profiles Marine sediments Multi-disciplinary Nordic seas North Atlantic Deep Western Boundary Current North Atlantic Deep Water Thermohaline Circulation |
spellingShingle |
Keywords: Bottom current Deep Water Deep western boundary currents Deglaciations Eirik Drift Flow intensity Geophysical data Global thermohaline circulation Greenland Hydrographic profiles Marine sediments Multi-disciplinary Nordic seas North Atlantic Deep Western Boundary Current North Atlantic Deep Water Thermohaline Circulation Stanford, J D Rohling, Eelco Bacon, S. Holliday, N. P A review of the deep and surface currents around Eirik Drift, south of Greenland: Comparison of the past with the present |
topic_facet |
Keywords: Bottom current Deep Water Deep western boundary currents Deglaciations Eirik Drift Flow intensity Geophysical data Global thermohaline circulation Greenland Hydrographic profiles Marine sediments Multi-disciplinary Nordic seas North Atlantic Deep Western Boundary Current North Atlantic Deep Water Thermohaline Circulation |
description |
The global Thermohaline Circulation (THC) is primarily driven by the cooling and sinking of northward flowing North Atlantic surface waters in the Nordic Seas to form North Atlantic Deep Water (NADW) that flows southward as a component of the Deep Western Boundary Current (DWBC). It is widely accepted that major freshwater injections have disrupted the formation of NADW in the past, causing widespread cooling over the North Atlantic. Eirik Drift, a contourite south of Greenland, was formed from deposition of sediments carried in the DWBC, so contains information about DWBC variability. Before now, the spatial and temporal variability of the surface and deep water currents, and their relationship with the associated sedimentation have not been fully understood. Here, we present a review of the key findings from the RAPID Cape Farewell project at Eirik Drift, a multi-disciplinary study which included hydrographic profiles, sub-bottom and sea-floor geophysical data, and multi-proxy analyses of a marine sediment core. We use these previously published results to further elucidate the oceanographic processes above Eirik Drift and relate these results to the sedimentation patterns. We also resolve, using a down-core record of NADW flow intensity, how bottom currents in this region changed in association with freshwater forcing during the last deglaciation. |
format |
Article in Journal/Newspaper |
author |
Stanford, J D Rohling, Eelco Bacon, S. Holliday, N. P |
author_facet |
Stanford, J D Rohling, Eelco Bacon, S. Holliday, N. P |
author_sort |
Stanford, J D |
title |
A review of the deep and surface currents around Eirik Drift, south of Greenland: Comparison of the past with the present |
title_short |
A review of the deep and surface currents around Eirik Drift, south of Greenland: Comparison of the past with the present |
title_full |
A review of the deep and surface currents around Eirik Drift, south of Greenland: Comparison of the past with the present |
title_fullStr |
A review of the deep and surface currents around Eirik Drift, south of Greenland: Comparison of the past with the present |
title_full_unstemmed |
A review of the deep and surface currents around Eirik Drift, south of Greenland: Comparison of the past with the present |
title_sort |
review of the deep and surface currents around eirik drift, south of greenland: comparison of the past with the present |
publisher |
Elsevier |
url |
http://hdl.handle.net/1885/84894 https://doi.org/10.1016/j.gloplacha.2011.02.001 https://openresearch-repository.anu.edu.au/bitstream/1885/84894/5/Rohling_E_2011_A_review.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/84894/7/01_Stanford_A_review_of_the_deep_and_2011.pdf.jpg |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Cape Farewell Greenland NADW Nordic Seas North Atlantic Deep Water North Atlantic |
genre_facet |
Cape Farewell Greenland NADW Nordic Seas North Atlantic Deep Water North Atlantic |
op_source |
Global and Planetary Change |
op_relation |
0921-8181 http://hdl.handle.net/1885/84894 doi:10.1016/j.gloplacha.2011.02.001 https://openresearch-repository.anu.edu.au/bitstream/1885/84894/5/Rohling_E_2011_A_review.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/84894/7/01_Stanford_A_review_of_the_deep_and_2011.pdf.jpg |
op_doi |
https://doi.org/10.1016/j.gloplacha.2011.02.001 |
container_title |
Global and Planetary Change |
container_volume |
79 |
container_issue |
3-4 |
container_start_page |
244 |
op_container_end_page |
254 |
_version_ |
1788060422470893568 |