Küssner, Kevin; Sarnthein, Michael; Michel, Elisabeth; Mollenhauer, Gesine; Ronge, Thomas A; Siani, Giuseppe; Tiedemann, Ralf (2020): Glacial to deglacial reservoir ages of surface waters in the southern South Pacific [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.922671
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Abstract:
Ocean sediment records document abrupt changes in glacial-to-deglacial circulation and mixing of the ocean, recorded as changes in 14C reservoir ages of surface waters. Here we present 14C-based high-resolution age records of four sediment cores from the western and eastern continental margins of the South Pacific. Global correlation of centennial-scale ocean variability requires centennial-scale precision in age control which can be established by means of 14C plateau tuning. The accuracy and precision of plateau tuning are now confirmed in two sediment cores off Chile; in one core by independent land-based age control of four tephra layers, in a second core by a suite of peak glacial sediment varves. The results from the cores support the model of a bipolar seesaw at the onset of fast deglacial Antarctic warming, moreover, they show that the Antarctic Cold Reversal immediately preceded the onset of the Younger Dryas cold spell. During peak glacial times, high reservoir ages reaching up to ~1500 yr and paired ice-rafted debris and sediment laminations may reflect seasonal sea ice and/or a melt water lid at high latitudes off southern Chile, likewise east of Southern New Zealand.
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Supplement to:
Sarnthein, Michael; Küssner, Kevin; Grootes, Pieter Meiert; Ausín, Blanca; Eglinton, Timothy Ian; Muglia, Juan; Muscheler, Raimund; Schlolaut, Gordon (2020): Plateaus and jumps in the atmospheric radiocarbon record – Potential origin and value as global age markers for glacial-to-deglacial paleoceanography, a synthesis. Climate of the Past, 16, 2547–2571, https://doi.org/10.5194/cp-16-2547-2020
Related to:
Sarnthein, Michael; Balmer, Sven; Grootes, Pieter Meiert; Mudelsee, Manfred (2015): Planktic and benthic 14C reservoir ages for three ocean basins, calibrated by a suite of 14C plateaus in the glacial-to-deglacial Suigetsu atmospheric 14C record. Radiocarbon, 57(1), 129-151, https://doi.org/10.2458/azu_rc.57.17916
Siani, Giuseppe; Michel, Elisabeth; De Pol-Holz, Ricardo; DeVries, Tim; Lamy, Frank; Carel, Mélanie; Isguder, Gulay; Dewilde, Fabien; Lourantou, Anna (2013): Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation. Nature Communications, 4, 1-9, https://doi.org/10.1038/ncomms3758
Project(s):
Coverage:
Median Latitude: -47.429242 * Median Longitude: -128.688582 * South-bound Latitude: -52.659500 * West-bound Longitude: 174.525500 * North-bound Latitude: -44.769170 * East-bound Longitude: -75.564830
Date/Time Start: 2007-02-11T18:32:00 * Date/Time End: 2016-04-02T21:09:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
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4 datasets
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Datasets listed in this bundled publication
- Küssner, K; Sarnthein, M; Michel, E et al. (2020): Radiocarbon chronology of sediment core MD07-3088. https://doi.org/10.1594/PANGAEA.922667
- Küssner, K; Sarnthein, M; Michel, E et al. (2020): Radiocarbon chronology of sediment core PS75/104-1. https://doi.org/10.1594/PANGAEA.922668
- Küssner, K; Sarnthein, M; Michel, E et al. (2020): Radiocarbon chronology of sediment core PS97/137-1. https://doi.org/10.1594/PANGAEA.922669
- Küssner, K; Sarnthein, M; Michel, E et al. (2020): Radiocarbon chronology of sediment core SO213/2_76-2. https://doi.org/10.1594/PANGAEA.922670