Hydrochemistry of the Tumen River Estuary, Sea of Japan

The hydrological and hydrochemical parameters of the Tumen River estuary were collected at 13 stations in May and October 2015. Vertical temperature, conductivity, dissolved oxygen, chlorophyll fluorescence, and turbidity profiles were obtained. Water was sampled from the surface and bottom layer. T...

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Bibliographic Details
Published in:Oceanology (Washington. 1965) 2018-03, Vol.58 (2), p.175-186
Main Authors: Tishchenko, P. Ya, Semkin, P. Yu, Pavlova, G. Yu, Tishchenko, P. P., Lobanov, V. B., Marjash, A. A., Mikhailik, T. A., Sagalaev, S. G., Sergeev, A. F., Tibenko, E. Yu, Khodorenko, N. D., Chichkin, R. V., Shvetsova, M. G., Shkirnikova, E. M.
Format: Article
Language:English
Subjects:
Biodegradation
Blooms
Chlorophyll
Chlorophylls
Dissolved organic carbon
Dissolved oxygen
Earth and Environmental Science
Earth Sciences
Estuaries
Estuarine dynamics
Fluorescence
Flushing time
Hydrochemistry
Hydrology
Hypoxia
Ions
Isotopes
Marine Chemistry
Mineral nutrients
Nutrients
Oceanography
Parameters
Phytoplankton
Profiles
Rivers
Salinity
Salinity effects
Turbidity
Water analysis
Water sampling
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Summary:The hydrological and hydrochemical parameters of the Tumen River estuary were collected at 13 stations in May and October 2015. Vertical temperature, conductivity, dissolved oxygen, chlorophyll fluorescence, and turbidity profiles were obtained. Water was sampled from the surface and bottom layer. The water samples were analyzed for major ions, pH, salinity, concentrations of dissolved oxygen, major nutrients, dissolved organic carbon, humic matter, and δ 18 О and δD isotopes. This estuary is attributed to microtidal type with a flushing time of about 10 h. A phytoplakton bloom occurred in the top layer of the estuary. For surface horizons, the hydrochemical parameters show a linear correlation with salinity. In the bottom horizons, all these parameters, except for major ions and δ 18 О and δD isotopes, reveal substantial nonconservative behavior. The nonconservative behavior of the hydrochemical parameters in the bottom waters was mainly caused by degradation of the phytoplankton biomass at the water/sediment interface. Hypoxic conditions were established in the bottom waters of the estuary in May.
ISSN:0001-4370
1531-8508
DOI:10.1134/S0001437018010149