Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Galaasen, Eirik Vinje; Ninnemann, Ulysses S; Irvalı, Nil; Kleiven, Helga F; Rosenthal, Yair; Kissel, Catherine; Hodell, David A (2014): Epibenthic foraminifera stable isotope and planktic foraminifera Ba/Ca data of sediment core MD03-2664 [dataset publication series]. Bjerknes Centre for Climate Research, PANGAEA, https://doi.org/10.1594/PANGAEA.830081, Supplement to: Galaasen, EV et al. (2014): Rapid Reductions in North Atlantic Deep Water During the Peak of the Last Interglacial Period. Science, 343(6175), 1129-1132, https://doi.org/10.1126/science.1248667

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Deep ocean circulation has been considered relatively stable during interglacial periods, yet little is known about its behavior on submillennial time scales. Using a subcentennially resolved epibenthic foraminiferal d13C record we show that North Atlantic Deep Water (NADW) influence was strong at the onset of the last interglacial period and then interrupted by several prominent, centennial-scale reductions. These NADW transients occurred during periods of increased ice rafting and southward expansions of polar water influence, suggesting that a buoyancy threshold for convective instability was triggered by freshwater and circum-Arctic cryosphere changes. The deep Atlantic chemical changes were similar in magnitude to those associated with glaciations, implying that the canonical view of a relatively stable interglacial circulation may not hold for conditions warmer/fresher than at present.
Coverage:
Latitude: 57.439000 * Longitude: -48.605800
Date/Time Start: 2003-06-12T04:32:00 * Date/Time End: 2003-06-12T04:32:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Galaasen, EV; Ninnemann, US; Irvalı, N et al. (2014): Ba/Ca ratios of N. pachyderma (s) from sediment core MD03-2664. https://doi.org/10.1594/PANGAEA.830080
  2. Galaasen, EV; Ninnemann, US; Irvalı, N et al. (2014): Stable isotope ratios of C. wuellerstorfi from sediment core MD03-2664. https://doi.org/10.1594/PANGAEA.830079