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Sessford, Evangeline; Tisserand, Amandine; Risebrobakken, Bjørg; Andersson, Carin; Dokken, Trond; Jansen, Eystein (2018): Paleoceanography data of sediment core GS15-198-36-CC in the Denmark Strait. PANGAEA, https://doi.org/10.1594/PANGAEA.888443, Supplement to: Sessford, E et al. (in press): High-Resolution Benthic Mg/Ca Temperature Record of the Intermediate Water in the Denmark Strait Across D-O Stadial-Interstadial Cycles. Paleoceanography and Paleoclimatology, https://doi.org/10.1029/2018PA003370

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Abstract:
The GS15-198-36CC sediment core, retrieved from the northern bank of the Greenland-Iceland Ridge, exhibits a 30-year temporal resolution during the Dansgaard-Oeschger events 8-5 (40-30 ka). Multiple proxy records were measured for this time period: magnetic susceptibility, oxygen and carbon isotopes for N. pachyderma and C. neoteretis, absolute abundance of benthic species C. neoteretis and E. excavatum, and trace element ratios of benthic species C. neoteretis.
The age model for GS15-198-46CC relies on the published age model established for core PS2644-5 by using magnetic susceptibility tie points (https://doi.org/10.1594/PANGAEA.846287). The chronology is refined by stratigraphically tuning the marine magnetic record to the NGRIP δ18O record.
The Mg/Ca record, which is the first for benthic species during this time period in this region, indicate warm intermediate water in the Denmark Strait during stadials and cooler water during interstadials. However, while the stadials are quite stable periods, the interstadials exhibit an instability of the water column, rapidly warming and cooling within the first half of the interstadial, and gradually warming throughout the second half. These data are supported by the stable isotopes and absolute abundance counts of the same species, C. neoteretis.
Further details:
Strømsøe, Jørund Raukleiv; Jansen, Eystein; (ed.) (2015): Cruise report from ice2ice cruise GS15-198 with RV G.O. Sars in the western Nordic Seas, 19 July - 15 August 2015. Uni Research and Bjerknes Centre for Climate Research, Norway, hdl:10013/epic.51301.d001
Coverage:
Latitude: 68.031944 * Longitude: -22.116111
Date/Time Start: 2015-07-26T13:35:00 * Date/Time End: 2015-07-26T13:35:00
Event(s):
GS15-198-36-CC * Latitude: 68.031944 * Longitude: -22.116111 * Date/Time: 2015-07-26T13:35:00 * Elevation: -770.0 m * Recovery: 19.53 m * Location: Nordic Seas * Campaign: 58GS20150719 (GS15-198) * Basis: G. O. Sars (2003) * Device: Calypso Corer (CALYPSO)
Size:
7 datasets

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