Dimitra Denaxa^1,2, Gerasimos Korres¹, Sofia Darmaraki³ and Dr. Maria Hatzaki², (1)Hellenic Centre for Marine Research, Anavyssos, Greece, (2)National and Kapodistrian University of Athens, Department of Geology and Geoenvironment, Athens, Greece, (3)Foundation for Research and Technology (FORTH), Crete, Greece