Establishment of modern circulation pattern at c. 6000 cal a BP in Disko Bugt, central West Greenland: opening of the Vaigat Strait
ABSTRACT Variations in the Holocene circulation of the West Greenland Current (WGC) in the Disko Bugt region have been reconstructed from a suite of sediment cores. Palaeoceanographic proxies include magnetic susceptibility (MS) and X‐ray fluorescence titanium counts, which document a major shift in...
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crwiley:10.1002/jqs.2638 2024-06-02T08:05:46+00:00 Establishment of modern circulation pattern at c. 6000 cal a BP in Disko Bugt, central West Greenland: opening of the Vaigat Strait PERNER, KERSTIN MOROS, MATTHIAS SNOWBALL, IAN LLOYD, JEREMY M. KUIJPERS, ANTOON RICHTER, THOMAS 2013 http://dx.doi.org/10.1002/jqs.2638 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2638 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2638 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 28, issue 5, page 480-489 ISSN 0267-8179 1099-1417 journal-article 2013 crwiley https://doi.org/10.1002/jqs.2638 2024-05-03T11:43:21Z ABSTRACT Variations in the Holocene circulation of the West Greenland Current (WGC) in the Disko Bugt region have been reconstructed from a suite of sediment cores. Palaeoceanographic proxies include magnetic susceptibility (MS) and X‐ray fluorescence titanium counts, which document a major shift in circulation at c . 6000 cal a BP. Before this date, sediments in southern Disko Bugt were characterized by high terrigeneous and basaltic input, suggesting widespread influence of meltwater plumes. Our data show that the WGC re‐circulated in the southern Disko Bugt area because a potential northern pathway, the narrow Vaigat Strait, was blocked by icebergs that calved from marine outlet glaciers in eastern Disko Bugt. Sediments in southern Disko Bugt deposited after c . 6000 cal a BP have significantly lower terrestrial and basaltic sediment input, which coincides with minimum Holocene ice sheet extent. The reduced meltwater and iceberg discharge to the embayment caused the Vaigat Strait to become free of blocking icebergs and terrigenous input was partly diverted to the outer shelf. Thus, the modern circulation pattern of the WGC was established in the Disko Bugt region through the opening of the Vaigat Strait c . 6000 cal a BP. Article in Journal/Newspaper Disko bugt Greenland Ice Sheet Wiley Online Library Greenland Vaigat ENVELOPE(-52.947,-52.947,70.200,70.200) Journal of Quaternary Science 28 5 480 489 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
ABSTRACT Variations in the Holocene circulation of the West Greenland Current (WGC) in the Disko Bugt region have been reconstructed from a suite of sediment cores. Palaeoceanographic proxies include magnetic susceptibility (MS) and X‐ray fluorescence titanium counts, which document a major shift in circulation at c . 6000 cal a BP. Before this date, sediments in southern Disko Bugt were characterized by high terrigeneous and basaltic input, suggesting widespread influence of meltwater plumes. Our data show that the WGC re‐circulated in the southern Disko Bugt area because a potential northern pathway, the narrow Vaigat Strait, was blocked by icebergs that calved from marine outlet glaciers in eastern Disko Bugt. Sediments in southern Disko Bugt deposited after c . 6000 cal a BP have significantly lower terrestrial and basaltic sediment input, which coincides with minimum Holocene ice sheet extent. The reduced meltwater and iceberg discharge to the embayment caused the Vaigat Strait to become free of blocking icebergs and terrigenous input was partly diverted to the outer shelf. Thus, the modern circulation pattern of the WGC was established in the Disko Bugt region through the opening of the Vaigat Strait c . 6000 cal a BP. |
format |
Article in Journal/Newspaper |
author |
PERNER, KERSTIN MOROS, MATTHIAS SNOWBALL, IAN LLOYD, JEREMY M. KUIJPERS, ANTOON RICHTER, THOMAS |
spellingShingle |
PERNER, KERSTIN MOROS, MATTHIAS SNOWBALL, IAN LLOYD, JEREMY M. KUIJPERS, ANTOON RICHTER, THOMAS Establishment of modern circulation pattern at c. 6000 cal a BP in Disko Bugt, central West Greenland: opening of the Vaigat Strait |
author_facet |
PERNER, KERSTIN MOROS, MATTHIAS SNOWBALL, IAN LLOYD, JEREMY M. KUIJPERS, ANTOON RICHTER, THOMAS |
author_sort |
PERNER, KERSTIN |
title |
Establishment of modern circulation pattern at c. 6000 cal a BP in Disko Bugt, central West Greenland: opening of the Vaigat Strait |
title_short |
Establishment of modern circulation pattern at c. 6000 cal a BP in Disko Bugt, central West Greenland: opening of the Vaigat Strait |
title_full |
Establishment of modern circulation pattern at c. 6000 cal a BP in Disko Bugt, central West Greenland: opening of the Vaigat Strait |
title_fullStr |
Establishment of modern circulation pattern at c. 6000 cal a BP in Disko Bugt, central West Greenland: opening of the Vaigat Strait |
title_full_unstemmed |
Establishment of modern circulation pattern at c. 6000 cal a BP in Disko Bugt, central West Greenland: opening of the Vaigat Strait |
title_sort |
establishment of modern circulation pattern at c. 6000 cal a bp in disko bugt, central west greenland: opening of the vaigat strait |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1002/jqs.2638 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2638 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2638 |
long_lat |
ENVELOPE(-52.947,-52.947,70.200,70.200) |
geographic |
Greenland Vaigat |
geographic_facet |
Greenland Vaigat |
genre |
Disko bugt Greenland Ice Sheet |
genre_facet |
Disko bugt Greenland Ice Sheet |
op_source |
Journal of Quaternary Science volume 28, issue 5, page 480-489 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.2638 |
container_title |
Journal of Quaternary Science |
container_volume |
28 |
container_issue |
5 |
container_start_page |
480 |
op_container_end_page |
489 |
_version_ |
1800750650487734272 |