Vol. 31, issue 05, article # 11

Akulova O.B., Bukatyi V.I., Popov K.P. Variability of light absorption by yellow substance in surface water of Lake Teletskoy. // Optika Atmosfery i Okeana. 2018. V. 31. No. 05. P. 417–422 [in Russian].
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Abstract:

Experimental data on variability of light absorption by yellow substance in the surface layer of Lake Teletskoye (Gorny Altai) received during field hydrophysical studies carried out in the summer of 2017 are presented. The indices of light absorption by yellow substance calculated in the spectral range 400–800 nm (at natural logarithmic base) are within 0.1–2.1 m–1. The yellow substance concentration in Lake Teletskoye determined by the optical method from the measured light absorption by yellow substance varies from 2.9 to 5.1 g/m3. To assess the effect of light absorption by yellow substance on the total attenuation, the relative spectral contribution of major optically active components of the lake water (yellow substance, suspended matter, chlorophyll, and pure water) to the spectral attenuation index for the water area under study is calculated. It is found that just the yellow substance makes the maximum contribution at all sampling points (21) of the lake.

Keywords:

light absorption and attenuation indices, spectral transparency of water, dissolved organic matter, yellow substance, chlorophyll, suspended matter, physical model, correlation

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