Marion Lagarde¹, Nolwenn Lemaitre^2,3, Hélène Planquette⁴, Melanie Grenier⁵, Moustafa Belhadj⁶, Quoc Viet Pham⁶ and Catherine Jeandel⁷, (1)LEGOS, University Paul Sabatier (IRD, CNES, CNRS, UPS), Toulouse, France, (2)Vrije Universiteit Brussel, Brussels, Belgium, (3)ETH Zurich, Zurich, Switzerland, (4)IUEM Institut Universitaire Européen de la Mer, LEMAR, CNRS, Plouzané, France, (5)LEGOS/CNRS, Toulouse, France, (6)LEGOS/CNRS, TIM, Toulouse, France, (7)LEGOS, Université de Toulouse, (IRD, CNES, CNRS, UPS), Toulouse, France