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Voelker, Antje H L; Lebreiro, Susana Martin; Schönfeld, Joachim; Cacho, Isabel; Erlenkeuser, Helmut; Abrantes, Fatima F (2006): Stable isotope ratios of foraminifera, grain-size distribution and magnetic susceptibility record of sediment core MD99-2339 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.733094, Supplement to: Voelker, AHL et al. (2006): Mediterranean outflow strengthening during northern hemisphere coolings: A salt source for the glacial Atlantic? Earth and Planetary Science Letters, 245(1-2), 39-55, https://doi.org/10.1016/j.epsl.2006.03.014

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Abstract:
High-resolution grain size and magnetic susceptibility records from the eastern Gulf of Cadiz (site MD99-2339; 1170m water depth) reveal contourites formed by the Mediterranean Outflow (MOW) during the last 47kyr BP. Oscillations in the MOW's intensity occurred in phase with Greenland temperature variations with a stronger outflow during northern hemisphere coolings such as Dansgaard-Oeschger stadials, Heinrich events, and the Younger Dryas. Benthic delta13C data implies the Western Mediterranean Deep Water as one of the main sources feeding the outflow current, while differential changes in the properties of the Mediterranean source and entrained North Atlantic Central Water largely control the MOW's strength. Detailed studies for Heinrich events 1, 4 and 5 show that the flow strength peaked only when subtropical surface waters prevailed in the eastern Gulf of Cadiz, while incursions of icebergs and subpolar surface water were not favorable for the MOW's intensification. As the MOW was strong when the Atlantic's thermohaline circulation (THC) was weakened, the heat and salt injected by the MOW into the intermediate North Atlantic waters might have preconditioned the THC to switch from the stadial to the interstadial mode.
Project(s):
International Marine Global Change Study (IMAGES)
Coverage:
Latitude: 35.885500 * Longitude: -7.527833
Date/Time Start: 1999-09-15T10:18:00 * Date/Time End: 1999-09-15T10:18:00
Event(s):
MD99-2339 (94a) * Latitude: 35.885500 * Longitude: -7.527833 * Date/Time: 1999-09-15T10:18:00 * Elevation: -1177.0 m * Penetration: 26 m * Recovery: 18.54 m * Location: Gulf of Cádiz, Atlantic Ocean * Campaign: MD114 (IMAGES V) * Basis: Marion Dufresne (1995) * Method/Device: Calypso Corer (CALYPSO)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
13 datasets

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Datasets listed in this publication series

  1. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Table 1) Age determination of sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465021
  2. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 5f) Carbon isotopes on benthic foraminifera of sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465022
  3. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 5e) Oxygen isotopes on benthic foraminifera of sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465023
  4. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 4, 5b) Stable oxygen isotopes of Globigerina bulloides from sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465024
  5. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 8) Ice rafted debris of sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465026
  6. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 5d) Magnetic susceptibility (post-cruise remeasured) of sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465034
  7. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 5c) Mean grain size of <63 µm fraction of sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465025
  8. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 8) Summer Sea-Surface Temperature (SST) from planktonic foraminifera assemblages of sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465032
  9. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 2) Stable oxygen and carbon isotopes of Cibicides lobatulus from sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465027
  10. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 2) Stable oxygen and carbon isotopes of Cibicidoides pachyderma from sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465028
  11. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 2) Stable oxygen and carbon isotopes of Cibicidoides robertsonianus from sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465029
  12. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 2) Stable oxygen and carbon isotopes of Cibicidoides wuellerstorfi from sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465030
  13. Voelker, AHL; Lebreiro, SM; Schönfeld, J et al. (2006): (Fig. 2) Stable oxygen and carbon isotopes on Uvigerina sp. and U. mediterranea from sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.465031