Consistently dated Atlantic sediment cores over the last 40 thousand years

Claire Waelbroeck (1) , Bryan C. Lougheed (2) , Natalia Vázquez Riveiros (2) , Lise Missiaen (2) , Joel Pedro , Trond Dokken , Irka Hajdas (3) , Lukas Wacker (4) , Peter Abbott , Jean-Pascal Dumoulin (5) , François Thil , Frédérique Eynaud (6) , Linda Rossignol (6) , Wiem Fersi (2) , Ana Luiza Spadano Albuquerque (7) , Helge W. Arz , William Austin , Rosemarie Came , Anders E. Carlson (8) , James Collins (9) , Bernard Dennielou (10) , Stéphanie Desprat (6) , Alex Dickson , Mary Elliot (11) , Christa Farmer , Jacques Giraudeau (6) , Julia Gottschalk , Jorijntje Henderiks (12) , Konrad Hughen (13) , Simon Jung , Paul Knutz , Susana Lebreiro , David Lund , Jean Lynch-Stieglitz , Bruno Malaizé (6) , Thomas Marchitto , Gema Martínez-Méndez , Gesine Mollenhauer (14) , Filipa Naughton , Silvia Nave (15) , Dirk Nürnberg , Delia W. Oppo (16) , Victoria L. Peck , Frank J. C. Peeters (17) , Aurélie Pénaud (18) , Rodrigo da Costa Portilho-Ramos , Janne Repschläger , Jenny Roberts (19) , Carsten Rühlemann , Emilia Salgueiro , Maria Fernanda Sanchez Goni (6) , Joachim Schönfeld , Paolo Scussolini , Luke C. Skinner , Charlotte Skonieczny (20) , David Thornalley , Samuel Toucanne (21) , David Van Rooij , Laurence Vidal (22) , Antje Voelker , Mélanie Wary (6) , Syee Weldeab , Martin Ziegler (23)

1 PALEOCEAN - Paléocéanographie
2 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
3 ETH Zürich - Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich]
4 Institute for Particle Physics
5 LMC14 - UMS 2572 - Laboratoire de mesure du carbone 14
6 EPOC - Environnements et Paléoenvironnements OCéaniques
7 UFF - Universidade Federal Fluminense [Rio de Janeiro]
8 CEOAS - College of Earth, Ocean and Atmospheric Sciences [Corvallis]
9 GFZ - German Research Centre for Geosciences - Helmholtz-Centre Potsdam
10 IFREMER - Institut Français de Recherche pour l'Exploitation de la Mer
11 LPG - Laboratoire de Planétologie et Géodynamique [UMR 6112]
12 Paleobiology Program
13 WHOI - Department of Marine Chemistry and Geochemistry
14 AWI - Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine
15 Laboratorio Nacional de Energia e Geologia
16 WHOI - Woods Hole Oceanographic Institution
17 VU - Vrije Universiteit Amsterdam [Amsterdam]
18 LDO - Domaines Océaniques
19 Agricultural and Resource Economics Department
20 GEOPS - Géosciences Paris Sud
21 GM - Unité Géosciences Marines
22 CEREGE - Centre européen de recherche et d'enseignement des géosciences de l'environnement
23 Mathematisches institut

Rapid changes in ocean circulation and climate have been observed in marine-sediment and ice cores over the last glacial period and deglaciation, highlighting the non-linear character of the climate system and underlining the possibility of rapid climate shifts in response to anthropogenic greenhouse gas forcing. To date, these rapid changes in climate and ocean circulation are still not fully explained. One obstacle hindering progress in our understanding of the interactions between past ocean circulation and climate changes is the difficulty of accurately dating marine cores. Here, we present a set of 92 marine sediment cores from the Atlantic Ocean for which we have established age-depth models that are consistent with the Greenland GICC05 ice core chronology, and computed the associated dating uncertainties, using a new deposition modeling technique. This is the first set of consistently dated marine sediment cores enabling paleoclimate scientists to evaluate leads/lags between circulation and climate changes over vast regions of the Atlantic Ocean. Moreover, this data set is of direct use in paleoclimate modeling studies.

Mots clés: deep-water; north-atlantic; greenland ice-cores; sea-surface temperature; marine isotopic stage-3; western tropical atlantic; glacial period; productivity changes

Mots clés: c-14 reservoir ages; millennial-scale changes

Domaines: Planète et Univers [physics]; Sciences de la Terre

Claire Waelbroeck, Bryan C. Lougheed, Natalia Vázquez Riveiros, Lise Missiaen, Joel Pedro, et al.. Consistently dated Atlantic sediment cores over the last 40 thousand years. Scientific Data , 2019, 6 (1), pp.1-12. ⟨10.1038/s41597-019-0173-8⟩. ⟨hal-02292112⟩