Gerber, Lukas; Lippold, Jörg; Süfke, Finn; Valk, Ole; Testorf, Pierre; Ehnis, Manuel; Tautenhahn, Saskia; Max, Lars; Chiessi, Cristiano Mazur; Regelous, Marcel; Szidat, Sönke; Friedrich, Oliver; Pöppelmeier, Frerk (2025): Holocene 231Pa/230Th ratios, Uranium isotopes and biogenic Opal concentrations from four North Atlantic sediment cores and Generalized Additive Model [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.980736
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Published: 2025-08-12 • DOI registered: 2025-08-13
Abstract:
To investigate the variability of the Atlantic Meridional Overturning Circulation (AMOC) during the Holocene in the North Atlantic, we analyzed radioisotopes (230Th, 231Pa, 232Th, 234U, and 238U) in sediment samples from four core sites (ODP 172-1063, ODP 172-1059, ODP 162-983, and GeoB18529-2) with millennial-scale temporal resolution. From these measurements, we calculated 231Pa/230Th ratios. The isotope analyses were conducted using three instruments: a Neptune Plus MC-ICP-MS equipped with a retarding potential quadrupole filter at the Geozentrum Nordbayern, Friedrich–Alexander University, Erlangen; an ELEMENT ICP-MS at the Alfred Wegener Institute (AWI), Bremerhaven; and an iCAP TQe ICP-MS at the Institute of Earth Sciences, Heidelberg University.
To assess the influence of biogenic opal (bOpal) concentrations on the 231Pa/230Th ratios, we measured bOpal concentrations from the same samples. These measurements followed an automated protocol for dissolved silica analysis using molybdate-blue spectrophotometry, conducted at Heidelberg University.
The dataset includes estimates of mean sub-millennial AMOC strength in the North Atlantic, derived from the combined sedimentary 231Pa/230Th data. Using AMOC- 231Pa/230Th relationships from the Bern3D Earth system model, we converted the 231Pa/230Th ratios from all cores into a unified time series of past AMOC strength (expressed in Sverdrups, Sv) and applied a generalized additive model (GAM) fit for trend analysis.
Supplement to:
Gerber, Lukas; Lippold, Jörg; Süfke, Finn; Valk, Ole; Testorf, Pierre; Ehnis, Manuel; Tautenhahn, Saskia; Max, Lars; Chiessi, Cristiano Mazur; Regelous, Marcel; Szidat, Sönke; Friedrich, Oliver; Pöppelmeier, Frerk (2025): Low variability of the Atlantic Meridional Overturning Circulation throughout the Holocene. Nature Communications, 16(1), 6748, https://doi.org/10.1038/s41467-025-61793-z
Related to:
Barker, Stephen (2021): Planktic foraminiferal and Ice Rafted Debris (IRD) counts from ODP Site 983 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.929721
Lippold, Jörg; Pöppelmeier, Frerk; Süfke, Finn; Gutjahr, Marcus; Goepfert, Tyler J; Blaser, Patrick; Friedrich, Oliver; Link, Jasmin M; Wacker, Lukas; Rheinberger, Stefan; Jaccard, Samuel L (2019): Constraining the variability of the Atlantic Meridional Overturning Circulation during the Holocene. Geophysical Research Letters
Süfke, Finn; Pöppelmeier, Frerk; Goepfert, Tyler J; Regelous, Marcel; Koutsodendris, Andreas; Blaser, Patrick; Gutjahr, Marcus; Lippold, Jörg (2019): Constraints on the northwestern Atlantic deep water circulation from 231Pa/230Th during the last 30,000 years. Paleoceanography and Paleoclimatology, https://doi.org/10.1029/2019PA003737
Waelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; Pedro, Joel B; Dokken, Trond; Hajdas, Irka; Wacker, Lukas; Abbott, Peter M; Dumoulin, Jean-Pascal; Thil, François; Eynaud, Frédérique; Rossignol, Linda; Fersi, Wiem; Albuquerque, Ana Luiza Spadano; Arz, Helge Wolfgang; Austin, William EN; Came, Rosemarie E; Carlson, Anders Eskil; Collins, James A; Dennielou, Bernard; Desprat, Stéphanie; Dickson, Alex; Elliot, Mary; Farmer, Christa; Giraudeau, Jacques; Gottschalk, Julia; Henderiks, Jorijntje; Hughen, Konrad A; Jung, Simon; Knutz, Paul Cornils; Lebreiro, Susana Martin; Lund, David C; Lynch-Stieglitz, Jean; Malaizé, Bruno; Marchitto, Thomas M; Martínez-Méndez, Gema; Mollenhauer, Gesine; Naughton, Filipa; Nave, Silvia Osorio; Nürnberg, Dirk; Oppo, Delia W; Peck, Victoria L; Peeters, Frank J C; Penaud, Aurélie; Portilho-Ramos, Rodrigo Costa; Repschläger, Janne; Roberts, Jenny; Rühlemann, Carsten; Salgueiro, Emilia; Sanchez Goñi, Maria Fernanda; Schönfeld, Joachim; Scussolini, Paolo; Skinner, Luke C; Skonieczny, Charlotte; Thornalley, David J R; Toucanne, Samuel; Van Rooij, David; Vidal, Laurence; Voelker, Antje H L; Wary, Mélanie; Weldeab, Syee; Ziegler, Martin (2019): Consistently dated Atlantic sediment cores over the last 40 thousand years. Scientific Data, 6(1), 165, https://doi.org/10.1038/s41597-019-0173-8
Funding:
Coordenação de Aperfeicoamento de Pessoal de Nível Superior (CAPES), grant/award no. 8881.712022/2022-1
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. 277128673: Quantitative Rekonstruktion der Ozeanzirkulation
European Commission (EC), grant/award no. 101023443: Comprehensive Climate Modeling of the Mid-Pleistocene Transition
Coverage:
Median Latitude: 44.597743 * Median Longitude: -50.865868 * South-bound Latitude: 31.674190 * West-bound Longitude: -75.418770 * North-bound Latitude: 60.403300 * East-bound Longitude: -23.640600
Date/Time Start: 1995-07-21T11:58:00 * Date/Time End: 2014-06-14T03:32:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2 datasets
Download Data
Datasets listed in this bundled publication
- Gerber, L; Lippold, J; Süfke, F et al. (2025): Mean sub-millennial AMOC strength in the North Atlantic during the Holocene. https://doi.org/10.1594/PANGAEA.980738
- Gerber, L; Lippold, J; Süfke, F et al. (2025): Holocene 231Pa/230Th ratios, Uranium isotopes and biogenic Opal concentrations from four North Atlantic sediment cores. https://doi.org/10.1594/PANGAEA.980737