Mariona Claret¹, Arantza Ugalde², Anda Vladoiu³, Ethan F Williams⁴, Kraig B Winters⁵, Hugo F Martins⁶, Pedro J. Vidal-Moreno⁷, Joaquin Salvador⁸, Nina Hoareau⁹, Miguel Gonzalez-Herraez¹⁰ and Josep L Pelegrí⁸, (1)NorthWest Research Associates, Seattle, United States, (2)Institut de Ciències del Mar (ICM) - CSIC, Barcelona, Spain, (3)Applied Physics Laboratory, University of Washington, Seattle, United States, (4)University of California Santa Cruz, Department of Earth & Planetary Sciences, Santa Cruz, United States, (5)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (6)Instituto de Optica, CSIC, Madrid, Spain, (7)Universidad de Alcalá, Polytechnic School, Department of Electronics, Madrid, Spain, (8)ICM-CSIC, Barcelona, Spain, (9)Institut of Marine Sciences, ICM-CSIC, Barcelona, Spain, (10)University of Alcala, Polytechnic School, Department of Electronics, Alcala de Henares, Spain