Age model, radiocarbon dates and dinoflagellate cyst measurements from sediment core DA06-139G
A marine sediment core from Vaigat in Disko Bugt, West Greenland, has been analysed in terms of lithology, dinoflagellate cysts and foraminifera in order to evaluate the influence of oceanographic variability on West Greenland glacier stability. The data show that during the past 5200 years the Atla...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.785470 2023-05-15T16:01:06+02:00 Age model, radiocarbon dates and dinoflagellate cyst measurements from sediment core DA06-139G Andresen, Camilla S McCarthy, David J Dylmer, Christian Valdemar Seidenkrantz, Marit-Solveig Kuijpers, Antoon Lloyd, Jerry M LATITUDE: 70.000000 * LONGITUDE: -52.000000 * DATE/TIME START: 2006-01-01T00:00:00 * DATE/TIME END: 2006-01-01T00:00:00 2010-07-04 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.785470 https://doi.org/10.1594/PANGAEA.785470 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.785470 https://doi.org/10.1594/PANGAEA.785470 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Andresen, Camilla S; McCarthy, David J; Dylmer, Christian Valdemar; Seidenkrantz, Marit-Solveig; Kuijpers, Antoon; Lloyd, Jerry M (2010): Interaction between subsurface ocean waters and calving of the Jakobshavn Isbræ during the late Holocene. The Holocene, 21(2), 211-224, https://doi.org/10.1177/0959683610378877 DA06-139G GC Gravity corer Vaigat Strait West Greenland Dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.785470 https://doi.org/10.1177/0959683610378877 2023-01-20T07:32:35Z A marine sediment core from Vaigat in Disko Bugt, West Greenland, has been analysed in terms of lithology, dinoflagellate cysts and foraminifera in order to evaluate the influence of oceanographic variability on West Greenland glacier stability. The data show that during the past 5200 years the Atlantic foraminiferal abundance in the subsurface waters of the West Greenland Current (WGC) episodically increased, indicating periods of increases in the inflow of subsurface warm Atlantic water at 2000 - 1500 cal. yr BP and 1300 cal. yr BP as well as periods of less pronounced increased bottom-water temperatures around 4700 - 4000 cal. yr BP, 3100 - 2800, 2600, 1000 - 800, 500 - 400, and at 200 cal. yr. The sedimentological and dinoflagellate cyst data indicate that these episodes with enhanced advection of Irminger Sea-derived waters are accompanied by increased iceberg rafting, which we link to increased iceberg calving in relation to destabilization of the Jakobshavn Isbrae. The long-term trend in the data documents the end of a late-Holocene Thermal Maximum between 5200 and 4300 cal. yr BP and a final onset of the Neoglaciation at 3500 cal. yr BP. Increased responses of the iceberg rafting after 3500 cal. yr BP, reflects a westward/seaward advance of the glacier margin in relation to onset of Neoglaciation and a development of the glacier into a floating tongue after 2000 cal. yr BP. A comparison of our record with a record from the eastern North Atlantic indicates that a NAO-like anomaly pattern between subsurface waters in West Greenland and atmospheric temperature in the Eastern North Atlantic may have been operating during most of the late Holocene. However, during the past 1000 years the NAO signal may have weakened as some other mode of climate variability overprints the anti-phase climate signal in this region. Dataset Disko bugt glacier Greenland Jakobshavn North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Greenland Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) Vaigat ENVELOPE(-52.947,-52.947,70.200,70.200) ENVELOPE(-52.000000,-52.000000,70.000000,70.000000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
DA06-139G GC Gravity corer Vaigat Strait West Greenland |
spellingShingle |
DA06-139G GC Gravity corer Vaigat Strait West Greenland Andresen, Camilla S McCarthy, David J Dylmer, Christian Valdemar Seidenkrantz, Marit-Solveig Kuijpers, Antoon Lloyd, Jerry M Age model, radiocarbon dates and dinoflagellate cyst measurements from sediment core DA06-139G |
topic_facet |
DA06-139G GC Gravity corer Vaigat Strait West Greenland |
description |
A marine sediment core from Vaigat in Disko Bugt, West Greenland, has been analysed in terms of lithology, dinoflagellate cysts and foraminifera in order to evaluate the influence of oceanographic variability on West Greenland glacier stability. The data show that during the past 5200 years the Atlantic foraminiferal abundance in the subsurface waters of the West Greenland Current (WGC) episodically increased, indicating periods of increases in the inflow of subsurface warm Atlantic water at 2000 - 1500 cal. yr BP and 1300 cal. yr BP as well as periods of less pronounced increased bottom-water temperatures around 4700 - 4000 cal. yr BP, 3100 - 2800, 2600, 1000 - 800, 500 - 400, and at 200 cal. yr. The sedimentological and dinoflagellate cyst data indicate that these episodes with enhanced advection of Irminger Sea-derived waters are accompanied by increased iceberg rafting, which we link to increased iceberg calving in relation to destabilization of the Jakobshavn Isbrae. The long-term trend in the data documents the end of a late-Holocene Thermal Maximum between 5200 and 4300 cal. yr BP and a final onset of the Neoglaciation at 3500 cal. yr BP. Increased responses of the iceberg rafting after 3500 cal. yr BP, reflects a westward/seaward advance of the glacier margin in relation to onset of Neoglaciation and a development of the glacier into a floating tongue after 2000 cal. yr BP. A comparison of our record with a record from the eastern North Atlantic indicates that a NAO-like anomaly pattern between subsurface waters in West Greenland and atmospheric temperature in the Eastern North Atlantic may have been operating during most of the late Holocene. However, during the past 1000 years the NAO signal may have weakened as some other mode of climate variability overprints the anti-phase climate signal in this region. |
format |
Dataset |
author |
Andresen, Camilla S McCarthy, David J Dylmer, Christian Valdemar Seidenkrantz, Marit-Solveig Kuijpers, Antoon Lloyd, Jerry M |
author_facet |
Andresen, Camilla S McCarthy, David J Dylmer, Christian Valdemar Seidenkrantz, Marit-Solveig Kuijpers, Antoon Lloyd, Jerry M |
author_sort |
Andresen, Camilla S |
title |
Age model, radiocarbon dates and dinoflagellate cyst measurements from sediment core DA06-139G |
title_short |
Age model, radiocarbon dates and dinoflagellate cyst measurements from sediment core DA06-139G |
title_full |
Age model, radiocarbon dates and dinoflagellate cyst measurements from sediment core DA06-139G |
title_fullStr |
Age model, radiocarbon dates and dinoflagellate cyst measurements from sediment core DA06-139G |
title_full_unstemmed |
Age model, radiocarbon dates and dinoflagellate cyst measurements from sediment core DA06-139G |
title_sort |
age model, radiocarbon dates and dinoflagellate cyst measurements from sediment core da06-139g |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.785470 https://doi.org/10.1594/PANGAEA.785470 |
op_coverage |
LATITUDE: 70.000000 * LONGITUDE: -52.000000 * DATE/TIME START: 2006-01-01T00:00:00 * DATE/TIME END: 2006-01-01T00:00:00 |
long_lat |
ENVELOPE(-34.041,-34.041,63.054,63.054) ENVELOPE(-52.947,-52.947,70.200,70.200) ENVELOPE(-52.000000,-52.000000,70.000000,70.000000) |
geographic |
Greenland Irminger Sea Vaigat |
geographic_facet |
Greenland Irminger Sea Vaigat |
genre |
Disko bugt glacier Greenland Jakobshavn North Atlantic |
genre_facet |
Disko bugt glacier Greenland Jakobshavn North Atlantic |
op_source |
Supplement to: Andresen, Camilla S; McCarthy, David J; Dylmer, Christian Valdemar; Seidenkrantz, Marit-Solveig; Kuijpers, Antoon; Lloyd, Jerry M (2010): Interaction between subsurface ocean waters and calving of the Jakobshavn Isbræ during the late Holocene. The Holocene, 21(2), 211-224, https://doi.org/10.1177/0959683610378877 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.785470 https://doi.org/10.1594/PANGAEA.785470 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.785470 https://doi.org/10.1177/0959683610378877 |
_version_ |
1766397101998080000 |