Last Interglacial (MIS5e) hydrographic shifts linked to meltwater discharges from the East Greenland margin
Proximal evidence of the surface ocean response to size reduction of the Greenland Ice Sheet (GIS) during the Last Interglacial (MIS5e) and preceding glacial termination (T2) remains largely elusive. Using a new sediment record from the western Iceland Sea, the behavior of the northeastern GIS and i...
Published in: | Quaternary Science Reviews |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/8bb8655a-8f59-4f1a-b42f-fbf8ab409599 2023-12-31T10:06:20+01:00 Last Interglacial (MIS5e) hydrographic shifts linked to meltwater discharges from the East Greenland margin Zhuravleva, Anastasia Bauch, Henning A. Van Nieuwenhove, Nicolas 2017-05-15 https://pure.au.dk/portal/da/publications/last-interglacial-mis5e-hydrographic-shifts-linked-to-meltwater-discharges-from-the-east-greenland-margin(8bb8655a-8f59-4f1a-b42f-fbf8ab409599).html https://doi.org/10.1016/j.quascirev.2017.03.026 eng eng https://pure.au.dk/portal/da/publications/last-interglacial-mis5e-hydrographic-shifts-linked-to-meltwater-discharges-from-the-east-greenland-margin(8bb8655a-8f59-4f1a-b42f-fbf8ab409599).html info:eu-repo/semantics/restrictedAccess Zhuravleva , A , Bauch , H A & Van Nieuwenhove , N 2017 , ' Last Interglacial (MIS5e) hydrographic shifts linked to meltwater discharges from the East Greenland margin ' , Quaternary Science Reviews , vol. 164 , pp. 95-109 . https://doi.org/10.1016/j.quascirev.2017.03.026 East Greenland Current (EGC) Greenland Ice Sheet (GIS) Last Interglacial MIS5e Nordic Seas article 2017 ftuniaarhuspubl https://doi.org/10.1016/j.quascirev.2017.03.026 2023-12-07T00:02:00Z Proximal evidence of the surface ocean response to size reduction of the Greenland Ice Sheet (GIS) during the Last Interglacial (MIS5e) and preceding glacial termination (T2) remains largely elusive. Using a new sediment record from the western Iceland Sea, the behavior of the northeastern GIS and its relation to the subpolar North Atlantic surface hydrography is examined. Extremely light oxygen isotopic (δ 18 O) values are found off central East Greenland during early MIS5e and point to enhanced meltwater release, potentially from the northeastern sector of the GIS. Data from downstream the cold East Greenland Current (EGC) and its eastward branches suggest a far-reaching effect of this meltwater not only in the Nordic Seas but also in the SE Labrador Sea. In particular, whereas an early MIS5e warming (at ∼128.5–126.5 ka) in the two regions coincided with the relative reduction of meltwater input into the EGC, the subsequent cooling noted at ∼126.5 ka followed a renewed major freshwater event off central East Greenland. Our data further indicate persistent freshwater influence from the East Greenland margin over the entire MIS5e interval and, in addition, also reveal a late MIS5e meltwater event. The latter event occurred just prior to the last glacial inception and emphasizes the importance of Greenland meltwater as forcing factor on Interglacial climates. Article in Journal/Newspaper East Greenland east greenland current Greenland Ice Sheet Iceland Labrador Sea Nordic Seas North Atlantic Aarhus University: Research Quaternary Science Reviews 164 95 109 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
East Greenland Current (EGC) Greenland Ice Sheet (GIS) Last Interglacial MIS5e Nordic Seas |
spellingShingle |
East Greenland Current (EGC) Greenland Ice Sheet (GIS) Last Interglacial MIS5e Nordic Seas Zhuravleva, Anastasia Bauch, Henning A. Van Nieuwenhove, Nicolas Last Interglacial (MIS5e) hydrographic shifts linked to meltwater discharges from the East Greenland margin |
topic_facet |
East Greenland Current (EGC) Greenland Ice Sheet (GIS) Last Interglacial MIS5e Nordic Seas |
description |
Proximal evidence of the surface ocean response to size reduction of the Greenland Ice Sheet (GIS) during the Last Interglacial (MIS5e) and preceding glacial termination (T2) remains largely elusive. Using a new sediment record from the western Iceland Sea, the behavior of the northeastern GIS and its relation to the subpolar North Atlantic surface hydrography is examined. Extremely light oxygen isotopic (δ 18 O) values are found off central East Greenland during early MIS5e and point to enhanced meltwater release, potentially from the northeastern sector of the GIS. Data from downstream the cold East Greenland Current (EGC) and its eastward branches suggest a far-reaching effect of this meltwater not only in the Nordic Seas but also in the SE Labrador Sea. In particular, whereas an early MIS5e warming (at ∼128.5–126.5 ka) in the two regions coincided with the relative reduction of meltwater input into the EGC, the subsequent cooling noted at ∼126.5 ka followed a renewed major freshwater event off central East Greenland. Our data further indicate persistent freshwater influence from the East Greenland margin over the entire MIS5e interval and, in addition, also reveal a late MIS5e meltwater event. The latter event occurred just prior to the last glacial inception and emphasizes the importance of Greenland meltwater as forcing factor on Interglacial climates. |
format |
Article in Journal/Newspaper |
author |
Zhuravleva, Anastasia Bauch, Henning A. Van Nieuwenhove, Nicolas |
author_facet |
Zhuravleva, Anastasia Bauch, Henning A. Van Nieuwenhove, Nicolas |
author_sort |
Zhuravleva, Anastasia |
title |
Last Interglacial (MIS5e) hydrographic shifts linked to meltwater discharges from the East Greenland margin |
title_short |
Last Interglacial (MIS5e) hydrographic shifts linked to meltwater discharges from the East Greenland margin |
title_full |
Last Interglacial (MIS5e) hydrographic shifts linked to meltwater discharges from the East Greenland margin |
title_fullStr |
Last Interglacial (MIS5e) hydrographic shifts linked to meltwater discharges from the East Greenland margin |
title_full_unstemmed |
Last Interglacial (MIS5e) hydrographic shifts linked to meltwater discharges from the East Greenland margin |
title_sort |
last interglacial (mis5e) hydrographic shifts linked to meltwater discharges from the east greenland margin |
publishDate |
2017 |
url |
https://pure.au.dk/portal/da/publications/last-interglacial-mis5e-hydrographic-shifts-linked-to-meltwater-discharges-from-the-east-greenland-margin(8bb8655a-8f59-4f1a-b42f-fbf8ab409599).html https://doi.org/10.1016/j.quascirev.2017.03.026 |
genre |
East Greenland east greenland current Greenland Ice Sheet Iceland Labrador Sea Nordic Seas North Atlantic |
genre_facet |
East Greenland east greenland current Greenland Ice Sheet Iceland Labrador Sea Nordic Seas North Atlantic |
op_source |
Zhuravleva , A , Bauch , H A & Van Nieuwenhove , N 2017 , ' Last Interglacial (MIS5e) hydrographic shifts linked to meltwater discharges from the East Greenland margin ' , Quaternary Science Reviews , vol. 164 , pp. 95-109 . https://doi.org/10.1016/j.quascirev.2017.03.026 |
op_relation |
https://pure.au.dk/portal/da/publications/last-interglacial-mis5e-hydrographic-shifts-linked-to-meltwater-discharges-from-the-east-greenland-margin(8bb8655a-8f59-4f1a-b42f-fbf8ab409599).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2017.03.026 |
container_title |
Quaternary Science Reviews |
container_volume |
164 |
container_start_page |
95 |
op_container_end_page |
109 |
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