Interaction between warm Atlantic‐sourced waters and the East Greenland Current in northern Denmark Strait (68°N) during the last 10 600 cal a BP
ABSTRACT Changes in the Holocene interaction of the (i) cold/fresh East Greenland Current (EGC) and (ii) warm/saline Irminger Current (IC) in northern Denmark Strait have been reconstructed from benthic and planktic foraminifera assemblages, ice‐rafted debris, grain‐size analyses and quantitative X‐...
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crwiley:10.1002/jqs.2872 2024-09-30T14:34:05+00:00 Interaction between warm Atlantic‐sourced waters and the East Greenland Current in northern Denmark Strait (68°N) during the last 10 600 cal a BP Perner, Kerstin Jennings, Anne E. Moros, Matthias Andrews, John T. Wacker, Lukas California Department of Fish and Game 2016 http://dx.doi.org/10.1002/jqs.2872 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2872 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2872 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 31, issue 5, page 472-483 ISSN 0267-8179 1099-1417 journal-article 2016 crwiley https://doi.org/10.1002/jqs.2872 2024-09-11T04:14:42Z ABSTRACT Changes in the Holocene interaction of the (i) cold/fresh East Greenland Current (EGC) and (ii) warm/saline Irminger Current (IC) in northern Denmark Strait have been reconstructed from benthic and planktic foraminifera assemblages, ice‐rafted debris, grain‐size analyses and quantitative X‐ray diffraction. During the time from c . 10 600 to 8000 cal a BP, palaeoceanographic reconstructions reveal waning deglacial influence from the receding Greenland Ice Sheet and presence of a strong EGC caused low surface water productivity. From c . 8000 cal a BP, a predominant influence of Atlantic‐sourced IC waters on subsurface water conditions became established in northern Denmark Strait, which accompanied low surface water productivity. Relatively warm surface and subsurface water conditions, i.e . reduced EGC and strong IC influence, are found from c . 6500 to 4500 cal a BP, representing Holocene optimum‐like conditions. A mid‐ to late Holocene EGC strengthening caused increased stratification and formation of a distinct halocline. However, we recognize millennial‐scale periods of reduced stratification by an enhanced influence of Atlantic‐sourced IC Water on surface water conditions: (i) at c . 2500–1400 cal a BP − the time of the Roman Warm Period and (ii) at c . 300 cal a BP − the later part of the Little Ice Age. These periods of oceanic warming probably relate to changes in the Subpolar Gyre dynamics that led to enhanced entrainment of Atlantic‐sourced IC Water into northern Denmark Strait. Article in Journal/Newspaper Denmark Strait East Greenland east greenland current Greenland Ice Sheet Wiley Online Library Greenland Journal of Quaternary Science 31 5 472 483 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
ABSTRACT Changes in the Holocene interaction of the (i) cold/fresh East Greenland Current (EGC) and (ii) warm/saline Irminger Current (IC) in northern Denmark Strait have been reconstructed from benthic and planktic foraminifera assemblages, ice‐rafted debris, grain‐size analyses and quantitative X‐ray diffraction. During the time from c . 10 600 to 8000 cal a BP, palaeoceanographic reconstructions reveal waning deglacial influence from the receding Greenland Ice Sheet and presence of a strong EGC caused low surface water productivity. From c . 8000 cal a BP, a predominant influence of Atlantic‐sourced IC waters on subsurface water conditions became established in northern Denmark Strait, which accompanied low surface water productivity. Relatively warm surface and subsurface water conditions, i.e . reduced EGC and strong IC influence, are found from c . 6500 to 4500 cal a BP, representing Holocene optimum‐like conditions. A mid‐ to late Holocene EGC strengthening caused increased stratification and formation of a distinct halocline. However, we recognize millennial‐scale periods of reduced stratification by an enhanced influence of Atlantic‐sourced IC Water on surface water conditions: (i) at c . 2500–1400 cal a BP − the time of the Roman Warm Period and (ii) at c . 300 cal a BP − the later part of the Little Ice Age. These periods of oceanic warming probably relate to changes in the Subpolar Gyre dynamics that led to enhanced entrainment of Atlantic‐sourced IC Water into northern Denmark Strait. |
author2 |
California Department of Fish and Game |
format |
Article in Journal/Newspaper |
author |
Perner, Kerstin Jennings, Anne E. Moros, Matthias Andrews, John T. Wacker, Lukas |
spellingShingle |
Perner, Kerstin Jennings, Anne E. Moros, Matthias Andrews, John T. Wacker, Lukas Interaction between warm Atlantic‐sourced waters and the East Greenland Current in northern Denmark Strait (68°N) during the last 10 600 cal a BP |
author_facet |
Perner, Kerstin Jennings, Anne E. Moros, Matthias Andrews, John T. Wacker, Lukas |
author_sort |
Perner, Kerstin |
title |
Interaction between warm Atlantic‐sourced waters and the East Greenland Current in northern Denmark Strait (68°N) during the last 10 600 cal a BP |
title_short |
Interaction between warm Atlantic‐sourced waters and the East Greenland Current in northern Denmark Strait (68°N) during the last 10 600 cal a BP |
title_full |
Interaction between warm Atlantic‐sourced waters and the East Greenland Current in northern Denmark Strait (68°N) during the last 10 600 cal a BP |
title_fullStr |
Interaction between warm Atlantic‐sourced waters and the East Greenland Current in northern Denmark Strait (68°N) during the last 10 600 cal a BP |
title_full_unstemmed |
Interaction between warm Atlantic‐sourced waters and the East Greenland Current in northern Denmark Strait (68°N) during the last 10 600 cal a BP |
title_sort |
interaction between warm atlantic‐sourced waters and the east greenland current in northern denmark strait (68°n) during the last 10 600 cal a bp |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1002/jqs.2872 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2872 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2872 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Denmark Strait East Greenland east greenland current Greenland Ice Sheet |
genre_facet |
Denmark Strait East Greenland east greenland current Greenland Ice Sheet |
op_source |
Journal of Quaternary Science volume 31, issue 5, page 472-483 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.2872 |
container_title |
Journal of Quaternary Science |
container_volume |
31 |
container_issue |
5 |
container_start_page |
472 |
op_container_end_page |
483 |
_version_ |
1811637792691716096 |