Paleoceanographic data from core M23351 (GIK23351-1)
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2017
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| _version_ | 1867168570221264896 |
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| author | Zhuravleva, Anastasia Bauch, Henning A Van Nieuwenhove, Nicolas |
| author_facet | Zhuravleva, Anastasia Bauch, Henning A Van Nieuwenhove, Nicolas |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Proximal evidence of the surface ocean response to the 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 (delta18O) 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 | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_877368 |
| institution | PANGAEA |
| language | en |
| publishDate | 2017 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Paleoceanographic data from core M23351 (GIK23351-1) Zhuravleva, Anastasia Bauch, Henning A Van Nieuwenhove, Nicolas Arctic Ocean; GIK23351-1; KAL; Kasten corer; M7/5; Meteor (1986) Proximal evidence of the surface ocean response to the 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 (delta18O) 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. |
| title | Paleoceanographic data from core M23351 (GIK23351-1) |
| topic | Arctic Ocean; GIK23351-1; KAL; Kasten corer; M7/5; Meteor (1986) |
| url | https://doi.org/10.1594/PANGAEA.877368 |