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Moiseeva N. A., Churilova T. Ya., Efimova T. V., Artemiev V. A., Skorokhod E. Yu. Spectral bio-optical properties of water of Atlantic sector of Antarctic. Marine Biological Journal 2020, vol. 5, no. 4, pp. 69-78. https://doi.org/10.21072/mbj.2020.05.4.06

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Abstract

Studies of variability of spectral bio-optical properties of water of Atlantic sector of Antarctic were carried out during the 79th cruise of the RV “Akademik Mstislav Keldysh” (11.01.2020–04.02.2020). Chlorophyll a and phaeopigment concentration varied in the layer studied from 0.1 to 1.8 mg·m−3, except for two stations with content reaching 2.2 and 4.4 mg·m−3. The relationship was revealed between light absorption coefficient by phytoplankton and chlorophyll a concentration at a wavelength, corresponding to spectrum maxima: aph(438) = 0.044 × Ca1.2, r2 = 0.84 (n = 117); aph(678) = 0.021 × Ca1.1, r2 = 0.89 (n = 117). Spectral distribution of light absorption coefficient by non-algal particles and colored dissolved organic matter was described by exponential function. Absorption parameterization coefficients were retrieved: (1) light absorption coefficient by non-algal particles (0.001–0.027 m−1) and by colored dissolved organic matter (0.016–0.19 m−1) at a wavelength of 438 nm; (2) spectral slope coefficients of these components (0.005–0.016 and 0.009–0.022 nm−1, respectively).

Authors

N. A. Moiseeva
junior researcher

https://orcid.org/0000-0003-1356-7981

https://elibrary.ru/author_items.asp?id=959717

T. Ya. Churilova
leading researcher, PhD

http://orcid.org/0000-0002-0045-7284

https://elibrary.ru/author_items.asp?id=888565

T. V. Efimova
junior researcher

http://orcid.org/0000-0003-3908-4160

https://elibrary.ru/author_items.asp?id=766926

V. A. Artemiev
senior researcher, PhD

https://elibrary.ru/author_items.asp?id=611644

E. Yu. Skorokhod
junior researcher

http://orcid.org/0000-0002-3057-3964

https://elibrary.ru/author_items.asp?id=1034485

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