Hydrochemical Regime of the River Chernaya (Crimea): Environmental Aspects

Ovsyany, E. I.; Orekhova, N. A.

doi:10.22449/1573-160x-2018-1-77-88

Cited by 8 publications

(3 citation statements)

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“…According to the long-term monitoring (2007-2017) of the Chernaya River hydrological and hydrochemical characteristics, the average content of total dissolved inorganic carbon in the Khmelnytsky gauging station is 3488 µmol·kg -1 . Thus, the contribution of river flux (57.1•10 6 m 3 ·year -1 [9]) to the total budget of inorganic carbon in the waters of the Sevastopol Bay is 310 t·year -1 according to the equation…”

Section: Results and Their Discussionmentioning

confidence: 99%

“…1). This is manifested in the desalination of the bay surface waters, a significant intake of mineral and organic matters, including nutrients and dissolved forms of inorganic carbon, especially during the flood period [8,9]. According to its characteristics, the Sevastopol Bay ecosystem can be attributed to an estuarine type (with the exception of tidal fluctuations) [10,11].…”

Section: Methodsmentioning

confidence: 99%

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Features of Inorganic Carbon Regional Balance in Marine Ecosystems under Anthropogenic Pressure

Orekhova¹,

Konovalov²,

Medvedev³

2019

PhO

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Purpose. Global changes in the ocean biogeochemical structure are mostly pronounced on a regional scale. They are caused by the increased carbon flux to the aquatic ecosystems that is a result of its growing emission from the atmosphere, coastal sinks as well as and the primary production and degradation processes taking place in marine environments. It seems reasonable to separate the enumerated sources to the natural climatic factors and the anthropogenic ones which are considered in the studies of a carbon cycle. To assess the quantitative characteristics of the factor leading to natural carbon cycle transformation, it is necessary to reconstruct its budget, which is governed by the carbon intake and removal, as well as by the processes resulting in its redistribution between various forms. Methods and Results. The carbon budget in the Sevastopol Bay ecosystem (the Black Sea) is assessed, and contribution of the anthropogenic component is analyzed based on the long-term research (2007-2018) of hydrochemical and geochemical characteristics. The following results of the sediment carbonate system studies, namely the vertical profile of dissolved inorganic carbon (DIC), total alkalinity (ТА) and pH, and the dissolved inorganic carbon and alkalinity ratio show that the organic matter oxidation occurs mainly under the anaerobic conditions. It has been also revealed that the dissolved inorganic carbon flux (J DIC ) at the "water -sediment" boundary is directed from sediments to the bottom waters and amounts 0.42-0.61 mol•m -2 •year -1 . Conclusions. Different components of the inorganic carbon budget showed that the anthropogenic sources were the most important: their contribution constituted not less than 75% of the total inorganic carbon inflow. Based on the value of the dissolved inorganic carbon total reserve and its removal to the open sea, the time of complete renewal of the Sevastopol Bay waters is assumed to be 2 years and 4 months.

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Section: Results and Their Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Features of Inorganic Carbon Regional Balance in Marine Ecosystems under Anthropogenic Pressure

Orekhova¹,

Konovalov²,

Medvedev³

2019

PhO

Self Cite

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“…There are even fewer studies of atmospheric air pollution within the basins of the Zapadnyy Bulganak, Alma, Kacha, Belbek, and Chernaya rivers; here, the majority of attention is paid instead to the study of pollution of river waters [51][52][53][54], as well as marine waters [55,56], into which rivers carry out a large quantity of pollutants. There are only a few studies of air pollution within the river basins under consideration.…”

Section: Introductionmentioning

confidence: 99%

Unveiling Air Pollution in Crimean Mountain Rivers: Analysis of Sentinel-5 Satellite Images Using Google Earth Engine (GEE)

2023

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This article presents an assessment of atmospheric pollutant concentrations based on state-of-the-art geoinformation research methods that utilize Sentinel-5 satellite imagery, the cloud computing platform Google Earth Engine (GEE), and ArcGIS 10.8 software. The spatial distributions of some pollutants (nitrogen dioxide, sulfur dioxide, formaldehyde, carbon monoxide, methane) in the atmosphere are analyzed on the example of the basins of the Zapadnyy Bulganak, Alma, Kacha, Belbek, and Chernaya rivers on the north-western slope of the Crimean Mountains. The concentrations of the average annual and average monthly values of pollutants for each catchment area are compared. The GEE (Google Earth Engine) platform is used for extracting annual and monthly average rasters of pollutant substances, while ArcGIS is utilized for enhanced data visualization and in-depth analytical processing. Background concentrations of pollutants within protected natural areas are calculated. By comparing the spatial and temporal distribution of pollutant values with the background concentrations within these protected areas, a complex index of atmospheric pollution is constructed. The spatial and temporal variability of nitrogen dioxide (NO2) concentrations has been thoroughly examined. Based on the regression analysis (R > 0.85), the field of values of the total amount of emissions (which are analyzed for only six points in the study area and in the surrounding areas) was restored on the basis of the spatial and temporal heterogeneity of the field of distribution of nitrogen dioxide values (NO2). Since air pollution can have negative consequences, both for human health and for the ecosystem as a whole, this study is of great importance for assessing the ecological situation within the river basins of the north-western slope of the Crimean Mountains. This work also contributes to a general understanding of the problem of gas emissions, whose study is becoming increasingly relevant. The aim of this research is to assess the potential application of Sentinel-5 satellite imagery for air quality assessment and pollution analysis within the river basins of the north-western slopes of the Crimean Mountains. The significance of this study lies in the innovative use of Sentinel-5 satellite imagery to investigate air pollution in extensive regions where a regular network of observation points is lacking.

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Origin of hydrocarbons in the water of the river–sea mixing zone: A case study from the Chernaya River — The Sevastopol bay, Black Sea

Soloveva

Tikhonova

Миронов

et al. 2021

Regional Studies in Marine Science

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Hydrochemical Regime of the River Chernaya (Crimea): Environmental Aspects

Cited by 8 publications

References 0 publications

Features of Inorganic Carbon Regional Balance in Marine Ecosystems under Anthropogenic Pressure

Features of Inorganic Carbon Regional Balance in Marine Ecosystems under Anthropogenic Pressure

Unveiling Air Pollution in Crimean Mountain Rivers: Analysis of Sentinel-5 Satellite Images Using Google Earth Engine (GEE)

Origin of hydrocarbons in the water of the river–sea mixing zone: A case study from the Chernaya River — The Sevastopol bay, Black Sea

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