RT Book, Section T1 Multiparametric in-situ spectroscopic measuring system for coastal monitoring employed under field conditions in the Gulf of Gdansk (Baltic Sea). A1 Esteban Martínez, Óscar A1 Navarrete Fernández, María Cruz A1 Díaz Herrera, Natalia A1 González Cano, Agustín A1 Bernabeu Martínez, Eusebio AB A new type of multiparametric optical sensor system for in-situ measurements in seawater was tested under real conditions. Central to the system is an underwater core instrument (CI) which contains light sources and a multichannel spectrometer with CCD detector. The three optical sensors were connected to the instrument via optical fibres: a SERS optode for detection of organic compounds, a dissolved oxygen optode and a salinity sensor. We here present the first results of the sensors of the cruise. During the two week field trial in the Gulf of Gdansk the three different deployment scenarios were performed: stationary measurements, depth profiles and towing experiments. In addition, conventional oceanographic data were measured with commercial probes. PB International Society Offshore & Polar Engineers SN 1-880653-62-1 YR 2004 FD 2004 LK https://hdl.handle.net/20.500.14352/53322 UL https://hdl.handle.net/20.500.14352/53322 NO ©2004 International Society Offshore & Polar Engineers.International Offshore and Polar Engineering Conference (ISOPE) (14ª. 2004. Toulon, Francia). DS Docta Complutense RD 10 abr 2025