Alkenone data from sediment cores MSM343310 and MSM343300 in Disko Bugt used to reconstruct palaeoceanographic conditions during the middle to late Holocene
We present new surface water proxy records of meltwater production (alkenone derived), relative sea surface temperature (diatom, alkenones) and sea ice (diatoms) changes from the Disko Bugt area off central West Greenland. We combine these new surface water reconstructions with published proxy recor...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.900274 2023-05-15T16:01:05+02:00 Alkenone data from sediment cores MSM343310 and MSM343300 in Disko Bugt used to reconstruct palaeoceanographic conditions during the middle to late Holocene Moros, Matthias Lloyd, Jeremy M Perner, Kerstin Krawczyk, Diana Blanz, Thomas de Vernal, Anne Ouellet‐Bernier, Marie‐Michèle Kuijpers, Antoon Jennings, Anne E Witkowski, Andrzej Schneider, Ralph R Jansen, Eystein MEDIAN LATITUDE: 69.748425 * MEDIAN LONGITUDE: -54.594045 * SOUTH-BOUND LATITUDE: 68.471850 * WEST-BOUND LONGITUDE: -55.186110 * NORTH-BOUND LATITUDE: 71.025000 * EAST-BOUND LONGITUDE: -54.001980 2019-04-09 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.900274 https://doi.org/10.1594/PANGAEA.900274 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.900274 https://doi.org/10.1594/PANGAEA.900274 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Moros, Matthias; Lloyd, Jeremy M; Perner, Kerstin; Krawczyk, Diana; Blanz, Thomas; de Vernal, Anne; Ouellet‐Bernier, Marie‐Michèle; Kuijpers, Antoon; Jennings, Anne E; Witkowski, Andrzej; Schneider, Ralph R; Jansen, Eystein (2016): Surface and sub-surface multi-proxy reconstruction of middle to late Holocene palaeoceanographic changes in Disko Bugt, West Greenland. Quaternary Science Reviews, 132, 146-160, https://doi.org/10.1016/j.quascirev.2015.11.017 alkenones Holocene multiproxy reconstructions sea-ice Sea surface temperature West Greenland Current Dataset 2019 ftpangaea https://doi.org/10.1594/PANGAEA.900274 https://doi.org/10.1016/j.quascirev.2015.11.017 2023-01-20T07:34:19Z We present new surface water proxy records of meltwater production (alkenone derived), relative sea surface temperature (diatom, alkenones) and sea ice (diatoms) changes from the Disko Bugt area off central West Greenland. We combine these new surface water reconstructions with published proxy records (benthic foraminifera - bottom water proxy; dinocyst assemblages – surface water proxy), along with atmospheric temperature from Greenland ice core and Greenland lake records. This multi-proxy approach allows us to reconstruct centennial scale middle to late Holocene palaeoenvironmental evolution of Disko Bugt and the Western Greenland coastal region with more detail than previously available. Combining surface and bottom water proxies identifies the coupling between ocean circulation (West Greenland Current conditions), the atmosphere and the Greenland Ice Sheet. Centennial to millennial scale changes in the wider North Atlantic region were accompanied by variations in the West Greenland Current (WGC). During periods of relatively warm WGC, increased surface air temperature over western Greenland led to ice sheet retreat and significant meltwater flux. In contrast, during periods of cold WGC, atmospheric cooling resulted in glacier advances. We also identify potential linkages between the palaeoceanography of the Disko Bugt region and key changes in the history of human occupation. Cooler oceanographic conditions at 3.5 ka BP support the view that the Saqqaq culture left Disko Bugt due to deteriorating climatic conditions. The cause of the disappearance of the Dorset culture is unclear, but the new data presented here indicate that it may be linked to a significant increase in meltwater flux, which caused cold and unstable coastal conditions at ca. 2 ka BP. The subsequent settlement of the Norse occurred at the same time as climatic amelioration during the Medieval Climate Anomaly and their disappearance may be related to harsher conditions at the beginning of the Little Ice Age. Highlights • Ocean temperature has ... Dataset Disko bugt Dorset culture glacier Greenland Greenland ice core ice core Ice Sheet North Atlantic Saqqaq Saqqaq culture Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Greenland ENVELOPE(-55.186110,-54.001980,71.025000,68.471850) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
alkenones Holocene multiproxy reconstructions sea-ice Sea surface temperature West Greenland Current |
spellingShingle |
alkenones Holocene multiproxy reconstructions sea-ice Sea surface temperature West Greenland Current Moros, Matthias Lloyd, Jeremy M Perner, Kerstin Krawczyk, Diana Blanz, Thomas de Vernal, Anne Ouellet‐Bernier, Marie‐Michèle Kuijpers, Antoon Jennings, Anne E Witkowski, Andrzej Schneider, Ralph R Jansen, Eystein Alkenone data from sediment cores MSM343310 and MSM343300 in Disko Bugt used to reconstruct palaeoceanographic conditions during the middle to late Holocene |
topic_facet |
alkenones Holocene multiproxy reconstructions sea-ice Sea surface temperature West Greenland Current |
description |
We present new surface water proxy records of meltwater production (alkenone derived), relative sea surface temperature (diatom, alkenones) and sea ice (diatoms) changes from the Disko Bugt area off central West Greenland. We combine these new surface water reconstructions with published proxy records (benthic foraminifera - bottom water proxy; dinocyst assemblages – surface water proxy), along with atmospheric temperature from Greenland ice core and Greenland lake records. This multi-proxy approach allows us to reconstruct centennial scale middle to late Holocene palaeoenvironmental evolution of Disko Bugt and the Western Greenland coastal region with more detail than previously available. Combining surface and bottom water proxies identifies the coupling between ocean circulation (West Greenland Current conditions), the atmosphere and the Greenland Ice Sheet. Centennial to millennial scale changes in the wider North Atlantic region were accompanied by variations in the West Greenland Current (WGC). During periods of relatively warm WGC, increased surface air temperature over western Greenland led to ice sheet retreat and significant meltwater flux. In contrast, during periods of cold WGC, atmospheric cooling resulted in glacier advances. We also identify potential linkages between the palaeoceanography of the Disko Bugt region and key changes in the history of human occupation. Cooler oceanographic conditions at 3.5 ka BP support the view that the Saqqaq culture left Disko Bugt due to deteriorating climatic conditions. The cause of the disappearance of the Dorset culture is unclear, but the new data presented here indicate that it may be linked to a significant increase in meltwater flux, which caused cold and unstable coastal conditions at ca. 2 ka BP. The subsequent settlement of the Norse occurred at the same time as climatic amelioration during the Medieval Climate Anomaly and their disappearance may be related to harsher conditions at the beginning of the Little Ice Age. Highlights • Ocean temperature has ... |
format |
Dataset |
author |
Moros, Matthias Lloyd, Jeremy M Perner, Kerstin Krawczyk, Diana Blanz, Thomas de Vernal, Anne Ouellet‐Bernier, Marie‐Michèle Kuijpers, Antoon Jennings, Anne E Witkowski, Andrzej Schneider, Ralph R Jansen, Eystein |
author_facet |
Moros, Matthias Lloyd, Jeremy M Perner, Kerstin Krawczyk, Diana Blanz, Thomas de Vernal, Anne Ouellet‐Bernier, Marie‐Michèle Kuijpers, Antoon Jennings, Anne E Witkowski, Andrzej Schneider, Ralph R Jansen, Eystein |
author_sort |
Moros, Matthias |
title |
Alkenone data from sediment cores MSM343310 and MSM343300 in Disko Bugt used to reconstruct palaeoceanographic conditions during the middle to late Holocene |
title_short |
Alkenone data from sediment cores MSM343310 and MSM343300 in Disko Bugt used to reconstruct palaeoceanographic conditions during the middle to late Holocene |
title_full |
Alkenone data from sediment cores MSM343310 and MSM343300 in Disko Bugt used to reconstruct palaeoceanographic conditions during the middle to late Holocene |
title_fullStr |
Alkenone data from sediment cores MSM343310 and MSM343300 in Disko Bugt used to reconstruct palaeoceanographic conditions during the middle to late Holocene |
title_full_unstemmed |
Alkenone data from sediment cores MSM343310 and MSM343300 in Disko Bugt used to reconstruct palaeoceanographic conditions during the middle to late Holocene |
title_sort |
alkenone data from sediment cores msm343310 and msm343300 in disko bugt used to reconstruct palaeoceanographic conditions during the middle to late holocene |
publisher |
PANGAEA |
publishDate |
2019 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.900274 https://doi.org/10.1594/PANGAEA.900274 |
op_coverage |
MEDIAN LATITUDE: 69.748425 * MEDIAN LONGITUDE: -54.594045 * SOUTH-BOUND LATITUDE: 68.471850 * WEST-BOUND LONGITUDE: -55.186110 * NORTH-BOUND LATITUDE: 71.025000 * EAST-BOUND LONGITUDE: -54.001980 |
long_lat |
ENVELOPE(-55.186110,-54.001980,71.025000,68.471850) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Disko bugt Dorset culture glacier Greenland Greenland ice core ice core Ice Sheet North Atlantic Saqqaq Saqqaq culture Sea ice |
genre_facet |
Disko bugt Dorset culture glacier Greenland Greenland ice core ice core Ice Sheet North Atlantic Saqqaq Saqqaq culture Sea ice |
op_source |
Supplement to: Moros, Matthias; Lloyd, Jeremy M; Perner, Kerstin; Krawczyk, Diana; Blanz, Thomas; de Vernal, Anne; Ouellet‐Bernier, Marie‐Michèle; Kuijpers, Antoon; Jennings, Anne E; Witkowski, Andrzej; Schneider, Ralph R; Jansen, Eystein (2016): Surface and sub-surface multi-proxy reconstruction of middle to late Holocene palaeoceanographic changes in Disko Bugt, West Greenland. Quaternary Science Reviews, 132, 146-160, https://doi.org/10.1016/j.quascirev.2015.11.017 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.900274 https://doi.org/10.1594/PANGAEA.900274 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.900274 https://doi.org/10.1016/j.quascirev.2015.11.017 |
_version_ |
1766397090060042240 |