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Salgueiro, Emilia; Naughton, Filipa; Voelker, Antje H L; de Abreu, Lucia; Alberto, Ana; Rossignol, Pascale E; Duprat, Josette M; Magalhães, Vitor H; Vaqueiro, Sandra; Turon, Jean-Louis; Abrantes, Fatima F (2014): Past circulation along the western Iberian margin [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.857162, Supplement to: Salgueiro, E et al. (2014): Past circulation along the western Iberian margin: a time slice vision from the Last Glacial to the Holocene. Quaternary Science Reviews, 106, 316-329, https://doi.org/10.1016/j.quascirev.2014.09.001

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Abstract:
Fifteen Iberian margin sediment cores, distributed between 43°12'N and 35°53'N, have been used to reconstruct spatial and temporal (sub)surface circulation along the Iberian margin since the Last Glacial period. Time-slice maps of planktonic foraminiferal derived summer sea surface temperature (SST) and export productivity (Pexp) were established for specific time intervals within the last 35 ky: the Holocene (Recent and last 8 ky), Younger Dryas (YD), Heinrich Stadials (HS) 1, 2a, 2b, 3, and the Last Glacial Maximum (LGM). The SST during the Holocene shows the same latitudinal gradient along the western Iberian margin as present-day with cold but productive areas that reflect the influence of coastal upwelling centers. The LGM appears as a slightly less warm, but more productive period relative to the Holocene and present-day conditions, suggesting that sea-level minima forced a westward displacement of the coastal upwelling centers possibly accompanied by a strengthening of northward winds. During the YD, a longitudinal thermal front is depicted at 10°W, with cold polar waters offshore and warmer subtropical waters inshore, suggesting that the subtropical Paleo-Iberian Poleward Current more likely flowed at a more inshore location masking the local SST signal and amplitude of variation. A substantial cooling and drop in productivity is observed during all HS, in particular HS1 and HS3, reflecting the penetration of icebergs-derived meltwater. These most extreme southward extensions of very cold waters define a strong SST gradient that marks a possible Paleo-Azores Front. Higher production south of this front was likely fed by frontal nutrient advection.
Further details:
Data for Figure 5 and Figure 6
Coverage:
Median Latitude: 40.324552 * Median Longitude: -10.282889 * South-bound Latitude: 35.885500 * West-bound Longitude: -12.624000 * North-bound Latitude: 43.195800 * East-bound Longitude: -7.527833
Date/Time Start: 1989-11-15T00:00:00 * Date/Time End: 1999-09-15T10:18:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
21 datasets

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Datasets listed in this publication series

  1. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Age versus depth correlation of sediment core D11957P. https://doi.org/10.1594/PANGAEA.857135
  2. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core D11957P. https://doi.org/10.1594/PANGAEA.857144
  3. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core M39029-7. https://doi.org/10.1594/PANGAEA.857145
  4. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core MD01-2446. https://doi.org/10.1594/PANGAEA.857146
  5. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core MD03-2697. https://doi.org/10.1594/PANGAEA.857147
  6. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core MD95-2039. https://doi.org/10.1594/PANGAEA.857148
  7. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core MD95-2040. https://doi.org/10.1594/PANGAEA.857149
  8. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Age versus depth correlation of sediment core MD95-2041. https://doi.org/10.1594/PANGAEA.857136
  9. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core MD95-2041. https://doi.org/10.1594/PANGAEA.857150
  10. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core MD95-2042. https://doi.org/10.1594/PANGAEA.857151
  11. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core MD99-2331. https://doi.org/10.1594/PANGAEA.857161
  12. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core MD99-2339. https://doi.org/10.1594/PANGAEA.857153
  13. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Age versus depth correlation of sediment core N3KF24. https://doi.org/10.1594/PANGAEA.857142
  14. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core N3KF24. https://doi.org/10.1594/PANGAEA.857154
  15. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Age versus depth correlation of sediment core OMEXII-5K. https://doi.org/10.1594/PANGAEA.857143
  16. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core OMEXII-5K. https://doi.org/10.1594/PANGAEA.857155
  17. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Age versus depth correlation of sediment core OMEXII-9K. https://doi.org/10.1594/PANGAEA.857139
  18. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core OMEXII-9K. https://doi.org/10.1594/PANGAEA.857156
  19. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Age versus depth correlation of sediment core POS200/10_28-1. https://doi.org/10.1594/PANGAEA.857140
  20. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core POS200/10_28-1. https://doi.org/10.1594/PANGAEA.857157
  21. Salgueiro, E; Naughton, F; Voelker, AHL et al. (2014): Summer sea surface temperature and export production sediment core SU92-03. https://doi.org/10.1594/PANGAEA.857158