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dc.contributor.authorDevendra, Dhanushka
dc.contributor.authorŁącka, Magdalena
dc.contributor.authorTelesiński, Maciej M.
dc.contributor.authorRasmussen, Tine Lander
dc.contributor.authorSztybor, Kamila
dc.contributor.authorZajączkowski, Marek
dc.date.accessioned2022-10-03T07:02:38Z
dc.date.available2022-10-03T07:02:38Z
dc.date.issued2022-09-10
dc.description.abstractThe flow of the Atlantic Water (AW) via the Return Atlantic Current (RAC) regulates the oceanographical conditions in the Northwestern (NW) Greenland Sea in the Fram Strait. As the intensity of the RAC might significantly influence both deep-water formation in the area and the stability of the Northeast Greenland Ice Sheet (NE GIS), knowledge of its variability in the past is important. Here we present a reconstruction of the paleoceanographic forcing of the AW on climatic conditions and associated environmental changes in the NW Greenland Sea by means of foraminiferal assemblages, stable (oxygen and carbon) isotopes, and various sedimentological parameters from sediment core GR02-GC retrieved from NE Greenland continental slope (1170 m water depth). Our data indicate an almost continuous presence of AW in the NW Greenland Sea during the last 35 kyr BP. Two peaks of low planktic δ<sup>18</sup>O values at ~34.5 and 33 kyr BP are interpreted as meltwater signals associated with warm AW-induced melting of the adjacent NE GIS. The NE GIS advanced between 32 and 29 kyr BP, resulting in reduced meltwater influx to the NW Greenland Sea. Increased iceberg calving and melting after 29 kyr BP, were probably linked to surface warming and glacier advance to the shelf-break lasting until 23.5 kyr BP. During the Last Glacial Maximum, the extensive sea ice cover was associated with the presence of subsurface AW at the study site. During the Bølling–Allerød (B/A, ~14.6–12.7 kyr BP) strong melting of glaciers and sea ice was probably caused by the combined effect of the B/A warming and the flow of warm AW. The RAC was weakened during the Younger Dryas (~12.8–11.7 kyr BP), which reduced the advection of warm AW to the NW Greenland Sea. After 11.7 kyr BP, the RAC reached its modern strength, whereas, during the Holocene Thermal Maximum, it reached its maximum strength for the study period. In addition, short-term weakening of AW inflow to the core site was observed, especially at 10.5, 8.5, and 5.8 kyr BP.en_US
dc.identifier.citationDevendra, Łącka M, Telesiński MM, Rasmussen TLR, Sztybor K, Zajączkowski M. Paleoceanography of the Northwestern Greenland Sea and Return Atlantic Current evolution, 35–4 kyr BP. Global and Planetary Change. 2022;217en_US
dc.identifier.cristinIDFRIDAID 2052961
dc.identifier.doi10.1016/j.gloplacha.2022.103947
dc.identifier.issn0921-8181
dc.identifier.issn1872-6364
dc.identifier.urihttps://hdl.handle.net/10037/26956
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalGlobal and Planetary Change
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titlePaleoceanography of the Northwestern Greenland Sea and Return Atlantic Current evolution, 35–4 kyr BPen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution 4.0 International (CC BY 4.0)