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Eynaud, Frédérique; de Abreu, Lucia; Voelker, Antje H L; Schönfeld, Joachim; Salgueiro, Emilia; Turon, Jean-Louis; Penaud, Aurélie; Toucanne, Samuel; Naughton, Filipa; Sanchez Goñi, Maria Fernanda; Malaizé, Bruno; Cacho, Isabel (2009): Stable isotope record, and abundances of ice rafted debris and Neogloboquadrina pachyderma in sediments of the Iberian margin. PANGAEA, https://doi.org/10.1594/PANGAEA.738148, Supplement to: Eynaud, F et al. (2009): Position of the Polar Front along the western Iberian margin during key cold episodes of the last 45 ka. Geochemistry, Geophysics, Geosystems, 10(7), Q07U05, https://doi.org/10.1029/2009GC002398

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Abstract:
This paper documents the migration of the Polar Front (PF) over the Iberian margin during some of the cold climatic extremes of the last 45 ka. It is based on a compilation of robust and coherent paleohydrological proxies obtained from eleven cores distributed between 36 and 42°N. Planktonic delta18O (Globigerina bulloides), ice-rafted detritus concentrations, and the relative abundance of the polar foraminifera Neogloboquadrina pachyderma sinistral were used to track the PF position. These three data sets, compared from core to core, show a consistent evolution of the sea surface paleohydrology along the Iberian margin over the last 45 ka. We focused on five time slices representative of cold periods under distinct paleoenvironmental forcings: the 8.2 ka event and the Younger Dryas (two recent cold events occurring within high values of summer insolation), Heinrich events 1 and 4 (reflecting major episodes of massive iceberg discharges into the North Atlantic), and the Last Glacial Maximum (typifying the highest ice volume accumulated in the Northern Hemisphere). For each event, we generated schematic maps mirroring past sea surface hydrological conditions. The maps revealed that the Polar Front presence along the Iberian margin was restricted to Heinrich events. The sea surface conditions during the Last Glacial Maximum were close to those at present day, except for the northern sites which briefly experienced subarctic conditions.
Coverage:
Median Latitude: 38.562940 * Median Longitude: -9.155535 * South-bound Latitude: 35.885500 * West-bound Longitude: -10.348500 * North-bound Latitude: 42.150000 * East-bound Longitude: -7.065667
Date/Time Start: 1981-01-01T00:00:00 * Date/Time End: 1999-09-15T20:25:00
Event(s):
M39/1_08-3 (M39008-3) * Latitude: 36.380000 * Longitude: -7.071667 * Date/Time: 1997-04-24T14:30:00 * Elevation: -577.0 m * Recovery: 5.77 m * Campaign: M39/1 * Basis: Meteor (1986) * Method/Device: Gravity corer (Kiel type) (SL)
MD01-2444 * Latitude: 37.565000 * Longitude: -10.134000 * Elevation: -2656.0 m * Campaign: MD123 (GEOSCIENCES, MARMARCORE) * Basis: Marion Dufresne (1995) * Method/Device: Calypso Corer (CALYPSO)
MD03-2697 * Latitude: 42.150000 * Longitude: -9.700000 * Elevation: -2164.0 m * Location: Vigo * Campaign: MD134 (PICABIA) * Basis: Marion Dufresne (1995) * Method/Device: Calypso Corer (CALYPSO)
Size:
14 datasets

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Datasets listed in this publication series

  1. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 1) Stable oxygen isotope record of Globigerina bulloides, and abundances of Neogloboquadrina pachyderma and ice-rafted debris in sediment core MD95-2042. https://doi.org/10.1594/PANGAEA.738125
  2. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 10) Stable oxygen isotope record of Globigerina bulloides, and abundance of ice-rafted debris in sediment core M39008-3. https://doi.org/10.1594/PANGAEA.738147
  3. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 2) Abundances of Neogloboquadrina pachyderma and ice-rafted debris in sediment core SU81-18. https://doi.org/10.1594/PANGAEA.738127
  4. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 3) Abundance of ice-rafted debris in sediment core MD99-2341. https://doi.org/10.1594/PANGAEA.738128
  5. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 3) Stable oxygen isotope record of Globigerina bulloides and abundance of Neogloboquadrina pachyderma in sediment core MD99-2341. https://doi.org/10.1594/PANGAEA.738131
  6. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 4) Stable oxygen isotope record of Globigerina bulloides and abundances of Neogloboquadrina pachyderma and ice-rafted debris in sediment core MD95-2040. https://doi.org/10.1594/PANGAEA.738133
  7. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2006): (Appendix 5) Abundances of ice-rafted debris in sediment core MD95-2039. https://doi.org/10.1594/PANGAEA.738134
  8. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 5) Stable oxygen isotope record of Globigerina bulloides, and abundances of Neogloboquadrina pachyderma and ice-rafted debris in sediment core MD95-2039. https://doi.org/10.1594/PANGAEA.738135
  9. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 6) Abundance of ice-rafted debris in sediment core MD95-2041. https://doi.org/10.1594/PANGAEA.738137
  10. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 6) Stable oxygen isotope record of Globigerina bulloides and abundance of Neogloboquadrina pachyderma in sediment core MD95-2041. https://doi.org/10.1594/PANGAEA.738136
  11. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 7) Abundance of Neogloboquadrina pachyderma in sediment core MD01-2444. https://doi.org/10.1594/PANGAEA.738138
  12. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 8) Stable oxygen isotope record of Globigerina bulloides, and abundances of Neogloboquadrina pachyderma and ice-rafted debris in sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.738142
  13. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 9) Stable oxygen isotope record of Globigerina bulloides, and abundances of Neogloboquadrina pachyderma and ice-rafted debris in sediment core MD03-2697. https://doi.org/10.1594/PANGAEA.738145
  14. Eynaud, F; de Abreu, L; Voelker, AHL et al. (2009): (Appendix 9) Stable oxygen isotope record of Globigerina bulloides, and abundances of Neogloboquadrina pachyderma and ice-rafted debris in sediment core MD99-2331. https://doi.org/10.1594/PANGAEA.738146