Paleotemperatures and paleosalinities from the Celtic Margin (Bay of Biscay), supplement to: Eynaud, Frédérique; Malaizé, Bruno; Zaragosi, Sebastien; de Vernal, Anne; Scourse, James D; Pujol, Claude; Cortijo, Elsa; Grousset, Francis E; Penaud, Aurélie; Toucanne, Samuel; Turon, Jean-Louis; Auffret, Gérard A (2012): New constraints on European glacial freshwater releases to the North Atlantic Ocean. Geophysical Research Letters, 39(15), L15601

During the late Quaternary, both external and internal forcings have driven major climatic shifts from glacial to interglacial conditions. Nonlinear climatic steps characterized the transitions leading to these extrema, with intermediate excursions particularly well xpressed in the dynamics of the N...

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Bibliographic Details
Main Authors: Eynaud, Frédérique, Malaizé, Bruno, Zaragosi, Sebastien, de Vernal, Anne, Scourse, James D, Pujol, Claude, Cortijo, Elsa, Grousset, Francis E, Penaud, Aurélie, Toucanne, Samuel, Turon, Jean-Louis, Auffret, Gérard A
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 2012
Subjects:
Calypso Corer
MD101
Marion Dufresne 1995
Climate Change Learning from the past climate Past4Future
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.810296
https://doi.pangaea.de/10.1594/PANGAEA.810296
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Summary:During the late Quaternary, both external and internal forcings have driven major climatic shifts from glacial to interglacial conditions. Nonlinear climatic steps characterized the transitions leading to these extrema, with intermediate excursions particularly well xpressed in the dynamics of the Northern Hemisphere cryosphere. Here we document the impact of these dynamics on the north-eastern North Atlantic Ocean, focussing on the 35-10 ka interval. Sea-surface salinities have been reconstructed quantitatively based on two independent methods from core MD95-2002, recovered from the northern Bay of Biscay adjacent to the axis of the Manche paleoriver outlet and thus in connection with proximal European ice sheets and glaciers. Quantitative reconstructions deriving from dinocyst and planktonic foraminiferal analyses have been combined within a robust chronology to assess the amplitude and timing of hydrological changes in this region. Our study evidences strong pulsed freshwater discharges which may have impacted the North Atlantic Meridional Overturning Circulation.

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