Dynamics of North Atlantic Deep Water masses during the Holocene
High resolution flow speed reconstructions of two core sites located on Gardar Drift in the northeast Atlantic Basin and Orphan Knoll in the northwest Atlantic Basin reveal a long-term decrease in flow speed of Northeast Atlantic Deep Water (NEADW) after 6,500 years. Benthic foraminiferal oxygen iso...
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American Geophysical Union
2011
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:30488 2023-05-15T17:06:08+02:00 Dynamics of North Atlantic Deep Water masses during the Holocene Hoogakker, B. A. A. Chapman, M. R. McCave, I. N. Hillaire-Marcel, C. Ellison, C. R. W. Hall, Ian Robert Telford, R. J. 2011 application/pdf https://orca.cardiff.ac.uk/id/eprint/30488/ http://www.agu.org/pubs/crossref/2011/2011PA002155.shtml https://orca.cardiff.ac.uk/id/eprint/30488/1/Hoogakker%202011.pdf https://doi.org/10.1029/2011PA002155 en eng American Geophysical Union https://orca.cardiff.ac.uk/id/eprint/30488/1/Hoogakker%202011.pdf Hoogakker, B. A. A., Chapman, M. R., McCave, I. N., Hillaire-Marcel, C., Ellison, C. R. W., Hall, Ian Robert https://orca.cardiff.ac.uk/view/cardiffauthors/A002402L.html orcid:0000-0001-6960-1419 orcid:0000-0001-6960-1419 and Telford, R. J. 2011. Dynamics of North Atlantic Deep Water masses during the Holocene. Paleoceanography 26 , PA4214. 10.1029/2011PA002155 https://doi.org/10.1029/2011PA002155 file https://orca.cardiff.ac.uk/30488/1/Hoogakker%202011.pdf doi:10.1029/2011PA002155 GC Oceanography Article PeerReviewed 2011 ftunivcardiff https://doi.org/10.1029/2011PA002155 2022-10-20T22:40:30Z High resolution flow speed reconstructions of two core sites located on Gardar Drift in the northeast Atlantic Basin and Orphan Knoll in the northwest Atlantic Basin reveal a long-term decrease in flow speed of Northeast Atlantic Deep Water (NEADW) after 6,500 years. Benthic foraminiferal oxygen isotopes of sites currently bathed in NEADW show a 0.2‰ depletion after 6,500 years, shortly after the start of the development of a carbon isotope gradient between NEADW and Norwegian Sea Deep Water. We consider these changes in near-bottom flow vigor and benthic foraminiferal isotope records to mark a significant reorganization of the Holocene deep ocean circulation, and attribute the changes to a weakening of NEADW flow during the mid to late Holocene that allowed the shoaling of Lower Deep Water and deeper eastward advection of Labrador Sea Water into the northeast Atlantic Basin. Article in Journal/Newspaper Labrador Sea North Atlantic Deep Water North Atlantic Northeast Atlantic Northwest Atlantic Norwegian Sea Cardiff University: ORCA (Online Research @ Cardiff) Norwegian Sea Orphan Knoll ENVELOPE(-46.500,-46.500,50.500,50.500) Paleoceanography 26 4 |
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Open Polar |
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Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
topic |
GC Oceanography |
spellingShingle |
GC Oceanography Hoogakker, B. A. A. Chapman, M. R. McCave, I. N. Hillaire-Marcel, C. Ellison, C. R. W. Hall, Ian Robert Telford, R. J. Dynamics of North Atlantic Deep Water masses during the Holocene |
topic_facet |
GC Oceanography |
description |
High resolution flow speed reconstructions of two core sites located on Gardar Drift in the northeast Atlantic Basin and Orphan Knoll in the northwest Atlantic Basin reveal a long-term decrease in flow speed of Northeast Atlantic Deep Water (NEADW) after 6,500 years. Benthic foraminiferal oxygen isotopes of sites currently bathed in NEADW show a 0.2‰ depletion after 6,500 years, shortly after the start of the development of a carbon isotope gradient between NEADW and Norwegian Sea Deep Water. We consider these changes in near-bottom flow vigor and benthic foraminiferal isotope records to mark a significant reorganization of the Holocene deep ocean circulation, and attribute the changes to a weakening of NEADW flow during the mid to late Holocene that allowed the shoaling of Lower Deep Water and deeper eastward advection of Labrador Sea Water into the northeast Atlantic Basin. |
format |
Article in Journal/Newspaper |
author |
Hoogakker, B. A. A. Chapman, M. R. McCave, I. N. Hillaire-Marcel, C. Ellison, C. R. W. Hall, Ian Robert Telford, R. J. |
author_facet |
Hoogakker, B. A. A. Chapman, M. R. McCave, I. N. Hillaire-Marcel, C. Ellison, C. R. W. Hall, Ian Robert Telford, R. J. |
author_sort |
Hoogakker, B. A. A. |
title |
Dynamics of North Atlantic Deep Water masses during the Holocene |
title_short |
Dynamics of North Atlantic Deep Water masses during the Holocene |
title_full |
Dynamics of North Atlantic Deep Water masses during the Holocene |
title_fullStr |
Dynamics of North Atlantic Deep Water masses during the Holocene |
title_full_unstemmed |
Dynamics of North Atlantic Deep Water masses during the Holocene |
title_sort |
dynamics of north atlantic deep water masses during the holocene |
publisher |
American Geophysical Union |
publishDate |
2011 |
url |
https://orca.cardiff.ac.uk/id/eprint/30488/ http://www.agu.org/pubs/crossref/2011/2011PA002155.shtml https://orca.cardiff.ac.uk/id/eprint/30488/1/Hoogakker%202011.pdf https://doi.org/10.1029/2011PA002155 |
long_lat |
ENVELOPE(-46.500,-46.500,50.500,50.500) |
geographic |
Norwegian Sea Orphan Knoll |
geographic_facet |
Norwegian Sea Orphan Knoll |
genre |
Labrador Sea North Atlantic Deep Water North Atlantic Northeast Atlantic Northwest Atlantic Norwegian Sea |
genre_facet |
Labrador Sea North Atlantic Deep Water North Atlantic Northeast Atlantic Northwest Atlantic Norwegian Sea |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/30488/1/Hoogakker%202011.pdf Hoogakker, B. A. A., Chapman, M. R., McCave, I. N., Hillaire-Marcel, C., Ellison, C. R. W., Hall, Ian Robert https://orca.cardiff.ac.uk/view/cardiffauthors/A002402L.html orcid:0000-0001-6960-1419 orcid:0000-0001-6960-1419 and Telford, R. J. 2011. Dynamics of North Atlantic Deep Water masses during the Holocene. Paleoceanography 26 , PA4214. 10.1029/2011PA002155 https://doi.org/10.1029/2011PA002155 file https://orca.cardiff.ac.uk/30488/1/Hoogakker%202011.pdf doi:10.1029/2011PA002155 |
op_doi |
https://doi.org/10.1029/2011PA002155 |
container_title |
Paleoceanography |
container_volume |
26 |
container_issue |
4 |
_version_ |
1766061138425937920 |