Seemingly divergent sea surface temperature proxy records in the central Mediterranean during the last deglaciation
- 1Laboratoire des Sciences du Climat et de l'Environnement, Domaine du CNRS – UMR8212, Avenue de la Terrasse, Gif-sur-Yvette Cedex, France
- 2Université Paris-Sud XI, Faculté des Sciences d'Orsay, 91405 Orsay, France
- 3Faculté de Sfax, Faculté des Sciences de Sfax, Unité GEOGLOB, BP. 802, 3038, Sfax, Tunisia
- 4Université de Gabès, Faculté des Sciences de Gabès, Gabès, Tunisia
Abstract. Sea surface temperatures (SSTs) were reconstructed over the last 25 000 yr using alkenone paleothermometry and planktonic foraminifera assemblages from two cores of the central Mediterranean Sea: the MD04-2797 core (Siculo–Tunisian channel) and the MD90-917 core (South Adriatic Sea). Comparison of the centennial scale structure of the two temperature signals during the last deglaciation period reveals significant differences in timing and amplitude. We suggest that seasonal changes likely account for seemingly proxy record divergences during abrupt transitions from glacial to interglacial climates and for the apparent short duration of the Younger Dryas (YD) depicted by the alkenone time series, a feature that has already been stressed in earlier studies on the Mediterranean deglaciation.