Distribution and Dynamics of Icings in the Selenga Middle Mountains
https://doi.org/10.31857/S0869607124020055
EDN: MOPXIJ
Abstract
The paper presents the results of the study on icings in the Selenga middle mountains (Western Transbaikalia). Current and retrospective maps of their distribution have been drawn up, relevant data on the main morphometric characteristics, interannual spatial dynamics, and area variability have been obtained. Comparison of vector data on the location of the icings in different years, together with the materials obtained during field expedition studies, allowed us to preliminary assess their belonging to different genetic types. It has been established that in the Selenga Middle Mountains, the predominant icings are formed as a result of groundwater rise to the surface during the seasonal freezing of rocks. About 30% of the icings are associated with groundwater sources coming from deep aquifers (key icings), river water icings are very rare.
The interannual variability of the size of icings is in sync with the hydration cycles, at the same time, there is a tendency for an increase in the total number of icings. At the same time, the number of very large icings has decreased 2 times as compared to 1990, while the number of medium and small icings has increased. These trends are a consequence of changes in the state of the natural environment under the influence of climatic processes (increase in air temperature) and anthropogenic factors, which influence on the intensity of the icing formation processes in the Selenga Middle Mountains is significant.
Keywords
About the Author
V. N. Chernykh
Baikal Institute of Nature Management SB RAS
Russian Federation
Russian Federation
Vladimir Nikolaevich Chernykh, junior researcher Laboratory of Geoecology
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For citations:
Chernykh V.N. Distribution and Dynamics of Icings in the Selenga Middle Mountains. Proceedings of the Russian Geographical Society. 2024;156(2):155-168. (In Russ.) https://doi.org/10.31857/S0869607124020055. EDN: MOPXIJ
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