Geography

Demographic situation in Saratov region (2010–2021)

Authors: Ustavshchikova S. V.

The analysis of the current demographic situation is relevant since both demographic and migration growth are negative in the region. This article analyzes the main indicators of the demographic development of the region in the context of the COVID-19 pandemic against the background of previous years.

The impact of the COVID-19 pandemic on alcohol consumption in Russia (territorial aspect)

Authors: Samonina S. S.

The analysis of changes in alcohol consumption by the population of Russia for the period from January 2019 to December 2020 in the context of the development of the COVID-19 pandemic was made. The main psychological and social reasons for the increase in the amount and frequency of alcohol consumption during this period are considered, and a discrepancy between the annual dynamics of alcoholic beverages sales and the development of the epidemic is revealed.

Dust load on ground air and street roads in the central (historical) part of Saratov

Authors: Nevryuev A. M., Makarov V. Z.

The article presents the results of atmochemical and lithochemical analysis of dust particles in the surface air layer and dust estimates along road curbs in the main types of urban landscape areas in the central part of Saratov.

Estimation of frequency response of the global temperature to change in radiative forcing

Authors: Bogdanov M. B., Chervyakov M. Y.

The Earth’s climate system (ECS) is considered as a linear system whose input is a change in the solar constant ΔI( t) and the output is an anomaly of the globally averaged surface temperature ΔT( t). The system input can be affected by other factors, and at the output their own temperature fluctuations and a random noise manifest themselves. All these factors are assumed to be independent of ΔI( t). The spectral analysis of monthly mean values of ΔI( t) and ΔT( t) shows the existence of statistically significant coherence.

The effect of changes in cosmic ray flux on general atmospheric circulation

Authors: Bogdanov M. B., Morozova S. V.

A comparison of average daily values time series of the axial component of the global wind angular moment and galactic cosmic ray (GCR) flux was made. Using the superposed epoch method it is shown that the Forbush decreases of the GCR flux are accompanied by an increase in the average angular velocity of atmospheric circulation and, accordingly, by an increase in the zonal transfer.

Mineral composition and pollutant content in the bed load of watercourses on the territory of the city of Volsk

Authors: Sheshnev A. S., Majeed D., Reshetnikov M. V.

The article deals with the studies of the bed load of watercourses on the territory of the city of Volsk (Saratov region). The research shows that quartz to be the most widespread rock-forming mineral. As the proportion of quartz decreases, the calcite content increases. Ecologicalgeochemical state of the bed load in spring worsens as compared to summer due to the arrival of pollutants with melting snow from the urban watershed. The bed load with a high content of pollutants should be considered as an object of accumulated environmental damage.

Demographic development of the Volga-Ural macroregion as a determinant of social development

Authors: Ustavshchikova S. V.

The formation and development of agglomeration zones in the Volga-Ural macroregion should contribute to the preservation and development of the demographic resource. Economic and social changes during the development of the agglomeration are likely to help the formation of the migration attractiveness of the territory.

The current state of dust content in the atmospheric air of Yerevan

Authors: Margaryan V. G., Khachatryan G. A.

This article discusses the state of atmospheric air. Based on the results of the analysis, an assessment of its pollution levels in the city of Yerevan was carried out. It is shown that the concentration of dust in the atmospheric air has a well-defined annual course. The maximum values of dust concentration are typical for the warm period of the year. The greatest proportion of air pollution is observed in the administrative district of Kentron, the excess of dust content in relation to MPC. 

The use of Earth remote sensing data in the study of mountain glaciers (on the example of the Alibek glacier in Karachay-Cherkessia)

Authors: Makarov V. Z., Tyukov D. V., Shlapak P. A.

The article presents the results of studying the dynamics of changes in the Alibek glacier according to space images of different years. Methods for processing remote sensing data (ERS) of the Earth to determine the structural elements of the glacial surface are considered. The obtained data are compared with ground meteorological parameters.

Geological assessing artificial water bodies of the influence zone of metallurgical plants

Authors: Antsiferova G. A., Kulnev V. V., Shevyrev S. L., Mezhova L. A.

On the basis of the results interpretation of hydrochemical indicators change dynamics and the application of bioindication method by phytoplankton communities the geoecological state of two artificial reservoirs located in the zones of influence of metallurgical works objects and tested rehabilitation by introducing two strains of algae chlorella: the Matyrsky reservoir (Chlorella vulgaris ИФР No. C-111) and Balandinsky pond (Chlorella kessleri ВКПМ A1-11 ARW) is given. The positive role of using the method of correction of algocenosis is shown.

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