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Tesi, Tommaso; Asioli, Alessandra; Minisini, Daniel; Maselli, Vittorio; Dalla Valle, Giacomo; Gamberi, Fabiano; Langone, Leonardo; Cattaneo, Antonio; Montagna, Paolo; Trincardi, Fabio (2017): Geochemistry of sapropel S1 deposits in the Adriatic Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.875699, Supplement to: Tesi, T et al. (2017): Large-scale response of the Eastern Mediterranean thermohaline circulation to African monsoon intensification during sapropel S1 formation. Quaternary Science Reviews, 159, 139-154, https://doi.org/10.1016/j.quascirev.2017.01.020

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Abstract:
The formation of Eastern Mediterranean sapropels has periodically occurred during intensification of northern hemisphere monsoon precipitation over North Africa. However, the large-scale response of the Eastern Mediterranean thermohaline circulation during these monsoon-fuelled freshening episodes is poorly constrained. Here, we investigate the formation of the youngest sapropel (S1) along an across-slope transect in the Adriatic Sea. Foraminifera-based oxygen index, redox-sensitive elements and biogeochemical parameters reveal - for the first time - that the Adriatic S1 was synchronous with the deposition of south-eastern Mediterranean S1 beds. Proxies of paleo thermohaline currents indicate that the bottom-hugging North Adriatic Dense Water (NAdDW) suddenly decreased at the sapropel onset simultaneously with the maximum freshening of the Levantine Sea during the African Humid Period. We conclude that the lack of the "salty" Levantine Intermediate Water hampered the preconditioning of the northern Adriatic waters necessary for the NAdDW formation prior to the winter cooling. Consequently, a weak NAdDW limited in turn the Eastern Mediterranean Deep Water (EMDWAdriatic) formation with important consequences for the ventilation of the Ionian basin as well. Our results highlight the importance of the Adriatic for the deep water ventilation and the interdependence among the major eastern Mediterranean water masses whose destabilization exerted first-order control on S1 deposition.
Coverage:
Median Latitude: 41.937353 * Median Longitude: 16.482453 * South-bound Latitude: 41.457670 * West-bound Longitude: 14.750190 * North-bound Latitude: 42.850220 * East-bound Longitude: 17.517500
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
12 datasets

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Datasets listed in this publication series

  1. Tesi, T; Asioli, A; Minisini, D et al. (2017): Benthonic foraminifera of sediment core AMC99-1. https://doi.org/10.1594/PANGAEA.875780
  2. Tesi, T; Asioli, A; Minisini, D et al. (2017): Geochemistry of sediment core AMC99-1. https://doi.org/10.1594/PANGAEA.875696
  3. Tesi, T; Asioli, A; Minisini, D et al. (2017): Planktonic foraminifera of sediment core AMC99-1. https://doi.org/10.1594/PANGAEA.875744
  4. Tesi, T; Asioli, A; Minisini, D et al. (2017): XRF analysis of sediment core AMC99-1. https://doi.org/10.1594/PANGAEA.875698
  5. Tesi, T; Asioli, A; Minisini, D et al. (2017): Geochemistry of sediment core INVAS12-10. https://doi.org/10.1594/PANGAEA.875718
  6. Tesi, T; Asioli, A; Minisini, D et al. (2017): XRF analysis of sediment core INVAS12-10. https://doi.org/10.1594/PANGAEA.875715
  7. Tesi, T; Asioli, A; Minisini, D et al. (2017): Benthonic foraminifera of sediment core SA03-1. https://doi.org/10.1594/PANGAEA.875781
  8. Tesi, T; Asioli, A; Minisini, D et al. (2017): Planktonic foraminifera of sediment core SA03-1. https://doi.org/10.1594/PANGAEA.875783
  9. Tesi, T; Asioli, A; Minisini, D et al. (2017): Benthonic foraminifera of sediment core ST04-1. https://doi.org/10.1594/PANGAEA.875782
  10. Tesi, T; Asioli, A; Minisini, D et al. (2017): Geochemistry of sediment core ST04-1. https://doi.org/10.1594/PANGAEA.875719
  11. Tesi, T; Asioli, A; Minisini, D et al. (2017): Planktonic foraminifera of sediment core ST04-1. https://doi.org/10.1594/PANGAEA.875784
  12. Tesi, T; Asioli, A; Minisini, D et al. (2017): XRF analysis of sediment core ST04-1. https://doi.org/10.1594/PANGAEA.875716