Centennial scale benthic foraminiferal record of late Holocene oceanographic variability in Disko Bugt, West Greenland.
A new centennial scale benthic foraminiferal record of late Holocene climate variability and oceanographic changes off West Greenland (Disko Bugt) highlights substantial subsurface water mass changes (e.g. temperature and salinity) of the West Greenland Current (WGC) over the past 3.6 ka BP. Benthic...
Published in: | Quaternary Science Reviews |
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Elsevier
2011
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Online Access: | http://dro.dur.ac.uk/11141/ http://dro.dur.ac.uk/11141/1/11141.pdf https://doi.org/10.1016/j.quascirev.2011.06.018 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:11141 2023-05-15T14:56:52+02:00 Centennial scale benthic foraminiferal record of late Holocene oceanographic variability in Disko Bugt, West Greenland. Perner, K. Moros, M. Lloyd, J.M. Kuijpers, A. Telford, R. Harff, J. 2011-09-01 application/pdf http://dro.dur.ac.uk/11141/ http://dro.dur.ac.uk/11141/1/11141.pdf https://doi.org/10.1016/j.quascirev.2011.06.018 unknown Elsevier dro:11141 issn:0277-3791 doi:10.1016/j.quascirev.2011.06.018 http://dro.dur.ac.uk/11141/ http://dx.doi.org/10.1016/j.quascirev.2011.06.018 http://dro.dur.ac.uk/11141/1/11141.pdf NOTICE: this is the author’s version of a work that was accepted for publication in Quaternary science reviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Quaternary science reviews, 30, 19-20, 2011, 10.1016/j.quascirev.2011.06.018 Quaternary science reviews, 2011, Vol.30(19-20), pp.2815-2826 [Peer Reviewed Journal] Late Holocene Benthic foraminifera West Greenland Current East Greenland Current Irminger Current NAO Article PeerReviewed 2011 ftunivdurham https://doi.org/10.1016/j.quascirev.2011.06.018 2020-05-28T22:29:55Z A new centennial scale benthic foraminiferal record of late Holocene climate variability and oceanographic changes off West Greenland (Disko Bugt) highlights substantial subsurface water mass changes (e.g. temperature and salinity) of the West Greenland Current (WGC) over the past 3.6 ka BP. Benthic foraminifera reveal a long-term late Holocene cooling trend, which may be attributed to increased advection of cold, low-salinity water masses derived from the East Greenland Current (EGC). Cooling becomes most pronounced from c. 1.7 ka BP onwards. At this point the calcareous Atlantic benthic foraminiferal fauna decrease significantly and is replaced by an agglutinated Arctic fauna. Superimposed on this cooling trend, centennial scale variability in the WGC reveals a marked cold phase at c. 2.5 ka BP, which may correspond to the 2.7 ka BP cooling-event recorded in marine and terrestrial archives elsewhere in the North Atlantic region. A warm phase recognized at c. 1.8 ka BP is likely to correspond to the ‘Roman Warm Period’ and represents the warmest bottom water conditions. During the time period of the ‘Medieval Climate Anomaly’ we observe only a slight warming of the WGC. A progressively more dominant cold water contribution from the EGC on the WGC is documented by the prominent rise in abundance of agglutinated Arctic water species from 0.9 ka BP onwards. This cooling event culminates at c. 0.3 ka BP and represents the coldest episode of the ‘Little Ice Age’. Gradually increased influence of cold, low-salinity water masses derived from the EGC may be linked to enhanced advection of Polar and Arctic water by the EGC. These changes are possibly associated with a reported shift in the large-scale North Atlantic Oscillation atmospheric circulation pattern towards a more frequent negative North Atlantic Oscillation mode during the late Holocene. Article in Journal/Newspaper Arctic Disko bugt East Greenland east greenland current Foraminifera* Greenland North Atlantic North Atlantic oscillation Durham University: Durham Research Online Arctic Greenland Quaternary Science Reviews 30 19-20 2815 2826 |
institution |
Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
topic |
Late Holocene Benthic foraminifera West Greenland Current East Greenland Current Irminger Current NAO |
spellingShingle |
Late Holocene Benthic foraminifera West Greenland Current East Greenland Current Irminger Current NAO Perner, K. Moros, M. Lloyd, J.M. Kuijpers, A. Telford, R. Harff, J. Centennial scale benthic foraminiferal record of late Holocene oceanographic variability in Disko Bugt, West Greenland. |
topic_facet |
Late Holocene Benthic foraminifera West Greenland Current East Greenland Current Irminger Current NAO |
description |
A new centennial scale benthic foraminiferal record of late Holocene climate variability and oceanographic changes off West Greenland (Disko Bugt) highlights substantial subsurface water mass changes (e.g. temperature and salinity) of the West Greenland Current (WGC) over the past 3.6 ka BP. Benthic foraminifera reveal a long-term late Holocene cooling trend, which may be attributed to increased advection of cold, low-salinity water masses derived from the East Greenland Current (EGC). Cooling becomes most pronounced from c. 1.7 ka BP onwards. At this point the calcareous Atlantic benthic foraminiferal fauna decrease significantly and is replaced by an agglutinated Arctic fauna. Superimposed on this cooling trend, centennial scale variability in the WGC reveals a marked cold phase at c. 2.5 ka BP, which may correspond to the 2.7 ka BP cooling-event recorded in marine and terrestrial archives elsewhere in the North Atlantic region. A warm phase recognized at c. 1.8 ka BP is likely to correspond to the ‘Roman Warm Period’ and represents the warmest bottom water conditions. During the time period of the ‘Medieval Climate Anomaly’ we observe only a slight warming of the WGC. A progressively more dominant cold water contribution from the EGC on the WGC is documented by the prominent rise in abundance of agglutinated Arctic water species from 0.9 ka BP onwards. This cooling event culminates at c. 0.3 ka BP and represents the coldest episode of the ‘Little Ice Age’. Gradually increased influence of cold, low-salinity water masses derived from the EGC may be linked to enhanced advection of Polar and Arctic water by the EGC. These changes are possibly associated with a reported shift in the large-scale North Atlantic Oscillation atmospheric circulation pattern towards a more frequent negative North Atlantic Oscillation mode during the late Holocene. |
format |
Article in Journal/Newspaper |
author |
Perner, K. Moros, M. Lloyd, J.M. Kuijpers, A. Telford, R. Harff, J. |
author_facet |
Perner, K. Moros, M. Lloyd, J.M. Kuijpers, A. Telford, R. Harff, J. |
author_sort |
Perner, K. |
title |
Centennial scale benthic foraminiferal record of late Holocene oceanographic variability in Disko Bugt, West Greenland. |
title_short |
Centennial scale benthic foraminiferal record of late Holocene oceanographic variability in Disko Bugt, West Greenland. |
title_full |
Centennial scale benthic foraminiferal record of late Holocene oceanographic variability in Disko Bugt, West Greenland. |
title_fullStr |
Centennial scale benthic foraminiferal record of late Holocene oceanographic variability in Disko Bugt, West Greenland. |
title_full_unstemmed |
Centennial scale benthic foraminiferal record of late Holocene oceanographic variability in Disko Bugt, West Greenland. |
title_sort |
centennial scale benthic foraminiferal record of late holocene oceanographic variability in disko bugt, west greenland. |
publisher |
Elsevier |
publishDate |
2011 |
url |
http://dro.dur.ac.uk/11141/ http://dro.dur.ac.uk/11141/1/11141.pdf https://doi.org/10.1016/j.quascirev.2011.06.018 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Disko bugt East Greenland east greenland current Foraminifera* Greenland North Atlantic North Atlantic oscillation |
genre_facet |
Arctic Disko bugt East Greenland east greenland current Foraminifera* Greenland North Atlantic North Atlantic oscillation |
op_source |
Quaternary science reviews, 2011, Vol.30(19-20), pp.2815-2826 [Peer Reviewed Journal] |
op_relation |
dro:11141 issn:0277-3791 doi:10.1016/j.quascirev.2011.06.018 http://dro.dur.ac.uk/11141/ http://dx.doi.org/10.1016/j.quascirev.2011.06.018 http://dro.dur.ac.uk/11141/1/11141.pdf |
op_rights |
NOTICE: this is the author’s version of a work that was accepted for publication in Quaternary science reviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Quaternary science reviews, 30, 19-20, 2011, 10.1016/j.quascirev.2011.06.018 |
op_doi |
https://doi.org/10.1016/j.quascirev.2011.06.018 |
container_title |
Quaternary Science Reviews |
container_volume |
30 |
container_issue |
19-20 |
container_start_page |
2815 |
op_container_end_page |
2826 |
_version_ |
1766328930885697536 |