A. A. Mol’kov1, D. V. Kalinskaya2, I. A. Kapustin1, E. N. Korchemkina2, V. A. Osokina3, V. V. Pelevin3
1 Institute of Applied Physics of RAS, Nizhny Novgorod, Russia
2 Marine Hydrophysical Institute of RAS, Sevastopol, Russia
3 P.P. Shirshov Institute of Oceanology RAS, Moscow, Russia
Abstract
The presented results of pilot expedition work are aimed to assess the bioproductivity of inland fresh water areas based on data from space color scanners. The goal was to develop the methodology of gathering, evaluation and analyze the set of physical parameters of reservoir and atmosphere above it, which are necessary to verify the regional algorithms for processing of optical satellite images. The measurements were carried out at the Gorky water reservoir, which is part of eight reservoirs cascade located on the main waterway of Central Russia the Volga River, and is an example of an internal freshwater reservoir characterized by high biological productivity.
The maps of concentration of chlorophyll "a", total organic carbon and total suspended matter with high spatial resolution in the waters of the south reservoir are presented for three days: June 21 – 23, 2016. The variability of these parameters under the influence of rains, wind and currents is recorded and analyzed. The luminance coefficient of the water column was measured at 38 points of the reservoir at different concentrations of blue-green algae from August 1 to 6, 2016 and the parameters of the atmosphere above for the first time. A conclusion about the accuracy and features of the restoration of biooptical water parameters from the measured luminance coefficient was drawn.
Based on the results obtained, the possibilities of using satellite methods for remote monitoring of water quality in inland freshwater reservoirs are analyzed.
Keywords
remote measurements, fluorescent lidar UFL-9, brightness of the sea, water inherent optical properties, optical parameters of the atmosphere, freshwater reservoir, eutrophication