Abstract
This work presents original results in the applications of laser-induced fluorescence techniques, including the remote modification of total luminescent spectroscopy (TLS) proposed by some of the authors earlier, to field studies of spatial distributions of marine organic matter. Descriptions of measuring technologies and of the results obtained are given. Periodic structures in spatial distributions of the sea surface phytoplankton have been found. Two-dimensional TLS diagrams have been used to differentiate different water types containing various components of dissolved organic matter (DOM) and phytoplankton. Field experiments in support of the development of the technique as well as early spatial variability measurements were made during the Baltic and the North Sea cruises of the research vessel (RV) Arnold Veimer in 1985-1988. The latest measurements of the small-scale variability and seasonal dynamics of phytoplankton were carried out onboard RV Jan Mayen on the North Norwegian shelf in May, June and September 1995.
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