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P. O. Zavialov P. N. Makkaveev B. V. Konovalov A. A. Osadchiev P. V. Khlebopashev V. V. Pelevin A. B. Grabovskiy A. S. Izhitskiy I. V. Goncharenko D. M. Soloviev A. A. Polukhin 《Oceanology》2014,54(3):265-280
This paper presents the results of long-term in situ and satellite measurements at shelf areas adjacent to the estuaries of the small rivers of the Russian coast of the Black Sea (Mezyb, Pshada, Vulan, Tuapse, Bitkha, Sochi, Cudepsta, Mzymta). The quantitative characteristics of the response of the hydrophysical and hydrochemical fields at the sea shelf on the influence of the continental river discharge are presented for each of these areas. A number of indicators of the water quality (the concentrations of the nitrate and nitrite forms of nitrogen, the phosphorus, the silica, the dissolved oxygen, the value of the total alkalinity and pH, the mineral and organic suspended matter, and the chlorophyll a) are considered in the context of the anthropogenic and terrigenous influence. In this paper, the emphasis was placed on the Mzymta River plume at the shelf area adjacent to the city of Sochi, where the measurements were repeatedly performed during the spring flooding conditions in the period from 2007 until 2012. The interannual variability of the water quality indicators and the seasonal and short-term variability of the area and the configuration of the plume, which transports suspended matter and anthropogenic pollution, were considered. 相似文献
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P. N. Makkaveev V. V. Gordeev P. O. Zav’yalov A. A. Polukhin P. V. Khlebopashev A. I. Kochenkova 《Water Resources》2018,45(2):188-198
The decrease in Aral Sea area, which started in the 1960s, caused considerable changes in the hydrological, chemical, and biological structure of sea water. Regular observations of Aral water chemistry ceased in the early 1990s. There were no observations of the concentrations of biogenic element compounds in water (the so-called “first-day analyses”). During expeditions of the Institute of Oceanology, RAS, in September 2012 and October 2013, integrated hydrochemical observations were carried out, including measuring the concentrations of biogenic element compounds, dissolved oxygen, hydrogen sulfide, and carbonate equilibrium components. An objective of this study was to develop methods of hydrochemical studies under high water salinity (mineralization). In addition to the standard hydrochemical complex, water samples were taken to determine total water mineralization and the concentration of dissolved and suspended metal forms. The results of these studies are given. 相似文献
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In 1993 and 2007 when the expeditions of the Shirshov Institute of Oceanology were performed in the Kara Sea, a significant
part of its aquatic area was occupied by lenses of desalinated water. The fresh-water is supplied by the runoff of the Ob
and Yenisei rivers, as well as by meltwaters. The report considers the features of the freshwater chemical transformation
in the sea. It is shown that the contribution of meltwaters is small in the highly desalinated lenses (with salinity below
15‰) and the freshwater is supplied by the riverine runoff. It is also shown that, under definite conditions, it is possible
to determine the relative shares of the Ob and Yenisei waters using the chemical parameters (the silicon and alkalinity).
The data of 1993 when two lenses as such were found in the sea were confirmed; at that, the waters of the Yenisei and Ob rivers
were prevailing in the western and northeastern lenses, respectively. In 2007, one lens was found in the treated area of the
sea. It is shown that the chemical characteristics of the freshwater in the lens appeared to be sufficiently different from
those of the Ob river but similar to the Yenisei river’s characteristics according to the data of 1993. A map of the Ob’s
and the Yenisei’s water spreading over the sea’s aquatic area is presented. 相似文献
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E. L. Vinogradova P. N. Makkaveev Z. G. Melnikova Yu. R. Nalbandov P. A. Stunzhas P. V. Khlebopashev 《Oceanology》2011,51(5):796-803
The Volga River discharge consists of the waters transferred by fast currents through channels and the waters which are passing
through the shallow areas of the delta overgrown by cane. Using the hydrochemical data, it is possible to track distribution
of the waters modified by “biofilters” of macrophytes in the delta shallows starting from the external edge of the delta.
The main distinctive features of these waters are the high content of dissolved oxygen, the abnormally high values of the
pH, and the low content of dissolved inorganic carbon (both total and as CO2). These waters extend in the shape of 1 to 3-km-wide strips at a distance of 20–40 km from the outer border of the delta.
The analysis of the data obtained during the expeditions run by the Institute of Oceanology of the Russian Academy of Sciences
in 2003–2009, along with archived and published data, show that such “modified” waters occur almost constantly along the outer
edge of the Volga River delta. 相似文献
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P. N. Makkaveev P. A. Stunzhas Z. G. Mel’nikova P. V. Khlebopashev Sh. Kh. Yakubov 《Oceanology》2010,50(5):688-697
Hydrochemical studies of the Kara Sea were included into the program of the integrated expedition during cruise 54 of the
R/V Akademik Mstislav Keldysh (September 9–30, 2007). In several sea areas quite different in their weather conditions, a large set of hydrochemical analyses
was carried out, including the determination of the primary nutrients (silicon and different forms of nitrogen and phosphorus),
the dissolved oxygen content, and the total alkalinity and pH values. The report presents the hydrochemical conditions in
the southwestern part of the Kara Sea and the most striking results from the authors’ viewpoint. The data were compared to
those of the integrated oceanographic expedition of cruise 49 of the R/V Dmitry Mendeleev in 1993. 相似文献
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Resulting from the surveys in the Blagopoluchiya and Techenii bays at the Novaya Zemlya Archipelago during cruise 54 of the R/V Akademik Mstislav Keldysh in September of 2007, it was shown that the waters supplied from the archipelago coasts contained considerable amounts of dissolved nitrogen and phosphorus. The pH values and total alkalinities were also considerably increased. The laboratory experiments confirmed that the rocks forming the coasts of the surveyed bays might be sources of nitrogen and phosphorus. The effect of the Novaya Zemlya runoff upon the hydrochemical structure of the upper 10-m layer of the seawaters was traced for 16–20 km from the coast during the period of the surveys. 相似文献
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Polukhin A. A. Zagovenkova A. D. Khlebopashev P. V. Sergeeva V. M. Osadchiev A. A. Dbar R. S. 《Oceanology》2021,61(1):15-24
Oceanology - The article presents the results of hydrochemical studies of the rivers of the Abkhazian coast of the Black Sea in April 2019. The Kodor River with its plume was the main object of the... 相似文献
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