Abstract:
In this work historical investigations and modern results of classification of the Krasnoyarsk Reservoir are presented.
The paper presents results of studying the dynamics of phytopigments and other optically active components, using
multispectral satellite data. Several approaches to interpreting satellite data for optically complex inland water bodies
are offered. Based on results of historical investigations it is shown that the spatial distribution of phytoplankton in
the reservoir stems back to the time of its formation. Color index in the red spectral region (CIR) is introduced. A
relationship between the color index and chlorophyll concentration is investigated. The CIR, derived from the
AVHRR data, has been found to be related to chlorophyll concentration. Based on MODIS data, the waters of the
Krasnoyarsk Reservoir have been classified in accordance with their optical spectral variability, using the technique
of unsupervised ISO data classification. An empirical relationship between multispectral MODIS data and the
ground-truth measurements of chlorophyll concentration has been found.
