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| Sepulcre, S.; Vidal, L.; Tachikawa, K.; Rostek, F.; Bard, E.. |
| By reconstructing past hydrologic variations in the Northern Caribbean Sea and their influence on the stability of the Atlantic Meridional Overturning Circulation (AMOC) during the last 940 ka, we seek to document climate changes in this tropical area in response to the Mid-Pleistocene Transition (MPT). Using core MD03-2628, we estimated past changes in sea surface salinity (SSS) using Delta delta O-18, the difference between the modern, and the past delta O-18 of seawater (obtained by combining alkenone thermometer data with the delta O-18 of the planktonic foraminifera Globigerinoides ruber (white) and corrected for ice-sheet volume effects). Today, the lowest SSS values in the area studied are associated with the northernmost location of the... |
| Tipo: Text |
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| Ano: 2011 |
URL: https://archimer.ifremer.fr/doc/00228/33887/32232.pdf |
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| Vidal, L.; Menot, G.; Joly, C.; Bruneton, H.; Rostek, F.; Cagatay, M. N.; Major, C.; Bard, E.. |
| Sediments deposited under lacustrine and marine conditions in the Sea of Marmara hold a Late Quaternary record for water exchange between the Black Sea and the Mediterranean Sea. Here we report a multiproxy data set based on oxygen and strontium isotope results obtained from carbonate shells, major and trace elements, and specific organic biomarker measurements, as well as a micropaleontological study from a (14)C-dated sediment core retrieved from the Sea of Marmara. Pronounced changes occurred in delta(18)O and (87)Sr/(86)Sr values at the fresh and marine water transition, providing additional information in relation to micropaleontological data. Organic biomarker concentrations documented the marine origin of the sapropelic layer while changes in... |
| Tipo: Text |
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| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00231/34243/32642.pdf |
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