研究目的
To study the environmental status of marine coastal areas by obtaining detailed data about water constituents and their distribution using a shipborne semiautomatic passive optical complex.
研究成果
The developed semiautomatic complex EMMA is efficient for obtaining information about the distribution of different water types over the area of interest. The original calibration method WASM allows for the suppression of negative influences of weather and measurement conditions, enabling the estimation of suspended matter and other natural water constituents' concentration. The complex is robust and cheap, useful for operative monitoring of coastal marine areas and inland seas, as well as for ground truth measurements.
研究不足
The measurements are affected by weather conditions (wind, cloudiness, and sea surface roughness) and experiment conditions, which can introduce uncertainties in the data.
1:Experimental Design and Method Selection:
The study utilized a three-channel passive optical complex (EMMA) for ecological monitoring of marine areas, operating from board a vessel to measure sea radiance coefficient spectra.
2:Sample Selection and Data Sources:
Measurements were carried out in the Feodosia Bay, the Black Sea, with data collected from approximately 15,000 sea radiance coefficient spectra over more than 4 hours.
3:List of Experimental Equipment and Materials:
The EMMA complex, consisting of three STS-VIS spectrometers, was used for remote sensing.
4:Experimental Procedures and Operational Workflow:
The complex operated automatically from board a moving vessel at 1 Hz frequency, with data processed using the Water Absorption Step Method (WASM) to estimate water constituents' absorption spectra.
5:Data Analysis Methods:
The absorption spectra were analyzed to quantify the concentrations of suspended matter, coloured dissolved organic matter, and phytoplankton pigments.
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