Gerber, Lukas; Lippold, Jörg; Repschläger, Janne; Friedrich, Oliver; Testorf, Pierre; Ehnis, Manuel; Süfke, Finn; Blaser, Patrick; Pöppelmeier, Frerk; Jaccard, Samuel L: 231Pa/230Th ratios, Uranium isotopes and biogenic Opal concentrations of five North Atlantic sediment cores [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993370 (dataset in review)
Abstract:
To examine the influence of the Atlantic Meridional Overturning Circulation (AMOC) on 231Pa/230Th in the North Atlantic from the Last Glacial Maximum (LGM) to the Holocene, we analyzed radioisotopes (230Th, 231Pa, 232Th, 234U, and 238U) in sediment samples from five core sites (IODP U1313, MSM58-13-2, MSM58-28-4, SU90-03 and ODP 983). From these measurements, we calculated 231Pa/230Th ratios and mass fluxes. The isotope analyses were conducted using two instruments: a Thermo Scientific Neptune XT MC-ICP-MS equipped with a retarding potential quadrupole filter at the Institute of Earth Sciences, University of Lausanne 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. Combined with the radioisotope data, biogenic opal fluxes were calculated.
Source:
Barker, Stephen; Zhang, Xu; Jonkers, Lukas; Lordsmith, Sian; Conn, Stephen; Knorr, Gregor (2021): Strengthening Atlantic Inflow Across the Mid-Pleistocene Transition. Paleoceanography and Paleoclimatology, 36(4), e2020PA004200, https://doi.org/10.1029/2020PA004200
Gerber, Lukas; et al. (submitted): Water-depth-dependent 231Pa/230Th responses in the central North Atlantic since the Last Glacial Maximum.
Lippold, Jörg; Gutjahr, Marcus; Blaser, Patrick; Christner, Emanuel; de Carvalho, Maria Luiza; Mulitza, Stefan; Christl, Marcus; Wombacher, Frank; Böhm, Evelyn; Antz, Benny; Cartapanis, Olivier; Vogel, Hendrik; Jaccard, Samuel L (2016): Deep water provenance and dynamics of the (de)glacial Atlantic meridional overturning circulation. Earth and Planetary Science Letters, 445, 68-78, https://doi.org/10.1016/j.epsl.2016.04.013
Missiaen, Lise; Waelbroeck, Claire; Pichat, Sylvain; Jaccard, Samuel L; Eynaud, Frédérique; Greenop, Rosanna; Burke, Andrea (2019): Improving North Atlantic marine core chronologies using 230Th-normalization. Paleoceanography and Paleoclimatology, https://doi.org/10.1029/2018PA003444
Naafs, Bernhard David A; Hefter, Jens; Gruetzner, Jens; Stein, Ruediger (2013): Warming of surface waters in the mid-latitude North Atlantic during Heinrich Events. Paleoceanography, 28(1), 153-163, https://doi.org/10.1029/2012PA002354
Scheen, Jeemijn; Lippold, Jörg; Pöppelmeier, Frerk; Süfke, Finn; Stocker, Thomas F (2025): Promising Regions for Detecting the Overturning Circulation in Atlantic 231 Pa/ 230 Th: A Model-Data Comparison. Paleoceanography and Paleoclimatology, 40(3), e2024PA004869, https://doi.org/10.1029/2024PA004869
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
Project(s):
Earth System Critical Thresholds (EarthCriSys)
Funding:
Horizon Europe (HorizonEU), grant/award no. 101065424: Quantitative reconstruction of past seawater oxygen concentrations (OxyQuant)
Horizon Europe (HorizonEU), grant/award no. 101137601: Climate Tipping Points: Uncertainty-aware quantification of Earth system tipping potential from observations and models and assessment of associated climatic, ecological, and socioeconomic impacts (ClimTip)
Swiss National Science Foundation (SNF), grant/award no. 111588: Quantifying changes in the rate of North Atlantic Deep and Intermediate Water formation associated with abrupt climate changes during the late Quaternary
Coverage:
Median Latitude: 43.648724 * Median Longitude: -31.370624 * South-bound Latitude: 38.583330 * West-bound Longitude: -35.535830 * North-bound Latitude: 60.403300 * East-bound Longitude: -23.640600
Date/Time Start: 1990-01-01T00:00:00 * Date/Time End: 2016-09-24T12:05:00
Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 1.47 m
Event(s):
162-983A * Latitude: 60.403300 * Longitude: -23.640600 * Date/Time Start: 1995-07-21T11:58:00 * Date/Time End: 1995-07-22T09:29:00 * Elevation: -1983.0 m * Penetration: 254.4 m * Recovery: 264.42 m * Location: North Atlantic Ocean * Campaign: Leg162 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 254.4 m cored; 0 m drilled; 103.9 % recovery
306-U1313B * Latitude: 41.000023 * Longitude: -32.957300 * Elevation: -3413.5 m * Recovery: 306.54 m * Campaign: Exp306 (North Atlantic Climate 2) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 32 cores; 300.4 m cored; 102 % recovered; 2 m drilled; 302.4 m penetrated
306-U1313C * Latitude: 41.000022 * Longitude: -32.957010 * Elevation: -3412.7 m * Recovery: 305.79 m * Campaign: Exp306 (North Atlantic Climate 2) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 32 cores; 293.4 m cored; 104.2 % recovered; 0 m drilled; 293.4 m penetrated
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
3008 data points
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