Geochemical investigations of sediment profiles in the Norwegian-Greenland Sea

DOI

High-, i.e. 15-140-yr-resolution climate records from sediment cores 23071, 23074, and PS2644 from the Nordic Seas were used to recon:;truct changes in the surface and deep water circulation during marine isotope stages 1-5.1, i.e. the last 82 000 yr. From this the causal links between the paleoceanographic signals and the Dansgaard-Oeschger events 1-21 revealed in 0180-ice-core records from Greenland were determined. The stratigraphy of the cores is based on the planktic 0180 curves, the minima of which were directly correlated with the GISP2-0180 record, numerous AMS 14C ages, and some ash layers.The planktic d18O and dl3C curves of all three cores reveal numerous meltwater events, the most pronounced of which were assigned to the Heinrich events 1-6. The meltwater events, among other things also accompanied by cold sea surface temperatures and high IRD concentration, correlate with the stadial phases of the Dansgaard-Oeschger cycles and in the western Iceland Sea also to colder periods or abrupt drops in 0180 within a few longer interstadials. Besides being more numerous, the meltwater events also show isotope values lighter in the Iceland Sea than in the central Norwegian Sea, especially if compared to core 23071. This implies a continuous inflow of relative warm Atlantic water into the Norwegian Sea and a cyclonic circulation regime.

Supplement to: Voelker, Antje H L (1999): Zur Deutung der Dansgaard-Oeschger Ereignisse in ultra-hochauflösenden Sedimentprofilen aus dem Europäischen Nordmeer (Dansgaard-Oeschger events in ultra-high resolution sediment records from the Nordic Seas). Berichte-Reports, Institut für Geowissenschaften, Universität Kiel, 9, 278 pp

Identifier
DOI https://doi.org/10.1594/PANGAEA.771756
Related Identifier https://doi.org/10.2312/reports-ifg.1999.9
Related Identifier https://doi.org/10.2312/reports-sfb313.1989.15
Related Identifier https://doi.org/10.1007/978-3-642-56876-3_21
Related Identifier https://doi.org/10.2312/reports-gpi.1995.73
Related Identifier https://doi.org/10.1017/S0033822200030368
Related Identifier https://doi.org/10.2312/reports-sfb313.1990.23
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.771756
Provenance
Creator Voelker, Antje H L ORCID logo
Publisher PANGAEA
Publication Year 2011
Funding Reference Fourth Framework Programme https://doi.org/10.13039/100011105 Crossref Funder ID MAS3980185 https://cordis.europa.eu/project/id/MAS3980185 Quaternary Environment of the Eurasian North
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 48 datasets
Discipline Geosciences; Natural Sciences
Spatial Coverage (-21.765W, 66.667S, 4.907E, 75.005N); Norwegian Sea; Arctic Ocean; Norwegian-Greenland Sea; Denmark Strait
Temporal Coverage Begin 1986-07-12T00:00:00Z
Temporal Coverage End 1994-09-19T19:45:00Z