Natural Water Fluorescence Characteristics Based on Lidar Investigations of a Surface Water Layer Polluted by an Oil Film; the Baltic Cruise-May 2000

The Polish-Russian experiments (sea and laboratory) were carried out to detect and determine the fluorescence characteristics of seawater and its natural fluorescing components and to analyse the influence of oil in the surface water layer on the lidar-induced return signal. In Poland , during laboratory investigations was created a database of different natural water types and of water polluted with Petrobaltic oil. During the r/v `Oceania' cruise in the southern Baltic Sea two lidar methods were applied simultaneously to detect and analyse the influence of the fluorescence emission of oil on the fluorescence spectrum of seawater. Detection of oil pollution can be used to correct the fluorescent factors of fluorescing components on the basis of natural seawater fluorescence spectra.