Article
Article name The Impact of Global Warming on Permafrost in the Conditions of Transbaikal Region
Authors Stetyukha V.. ,
Bibliographic description Stetyukha V. A. The Impact of Global Warming on Permafrost in the Conditions of Transbaikal Region // Transbaikal State University Journal. 2025. Vol. 31, no. 2. P. 41–51. DOI: 10.21209/2227-9245-2025-31-2-41-51
Category Earth and Environmental Sciences
DOI 551.583: 551.345
DOI 10.21209/2227-9245-2025-31-2-41-51
Article type Original article
Annotation The relevance of the problem is due to the influence of changes in outdoor air temperature on the temperature fields of permafrost and the ecological state of natural and man-made systems. The object of the study is a soil massif including permafrost. The subject of the study is soil temperature fields under conditions of increasing average annual air temperature. The purpose of the work is to predict changes in the temperature fields of permafrost under conditions of global warming in Transbaikal region. The objectives of the study are to analyze changes in air and soil temperature in the region during warming, to predict the effect of soil temperature and humidity on changes in the temperature of permafrost using a numerical method. The methodology and methods implement the assessment of the global warming impact on permafrost, the analysis of changes in air and soil temperature and the prediction of permafrost degradation using a numerical method. The distribution of temperature fields in the soil is determined by solving nonlinear heat and mass transfer problems. As a result of the studies, patterns of changes in soil temperature fields with an increase in air temperature depending on the humidity and temperature of permafrost in the Transbaikal region are established. The position of the upper boundary of permafrost is determined under global warming conditions taking into account the specified factors. The analysis of the results of the studies allows us to identify soils that are most susceptible to changes in their occurrence conditions with a change in atmospheric air temperature. The most dangerous combinations of factors causing permafrost degradation in the area of the facilities are established. The scope of the results is to determine the state of soils to ensure the sustainability and environmental safety of construction and mining facilities under construction and adjacent to them.
Key words permafrost, air temperature, seasonally thawed layer, soil temperature, environmental safety, thawing depth, warming, humidity, heat and mass transfer, heat balance
Article information
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