Earth’s Cryosphere, 2023, Vol. XXVII, No. 4, p. 12-20.
SURFACE AND GROUND WATERS IN TERRESTRIAL PERMAFROST REGION
THE IMPACT OF THE PROCESSES OF THERMAL DENUDATION ON THE IONIC COMPOSITION OF SMALL LAKES IN CENTRAL YAMAL
N.Yu. Fakashchuk1,*, Yu.А. Dvornikov2,3, О.L. Оpokina1,4, А.V. Khomutov1
1 Earth Cryosphere Institute, Tyumen Scientific Centre of Siberian Branch of the Russian Academy of Sciences, Malygina St. 8, Tyumen, 625026 Russia
2 Department of Landscape Design and Sustainable Ecosystems, Agrarian and Technological Institute of the Peoples’ Friendship University of Russia, Moscow, Miklukho-Maklaya St. 8, Build. 2, Moscow, 117198 Russia
3 Arctic and Antarctic Research Institute, Bering St. 38, Saint-Petersburg, 199397 Russia
4 Tyumen Industrial University, Volodarskogo St. 38, Tyumen, 625000 Russia
*Corresponding author; e-mail: n.yu.fakashchuk@yandex.ru
Hydrochemical monitoring of inland waters makes it possible to obtain information about their state and to assess the influence of climatic factors on the regime of water reservoirs. In the recent decade, relevance of the research related to the impact of permafrost thaw on the state of small lakes in the Arctic has been growing. The influence of interannual fluctuations in air temperature and precipitation on the ionic composition of lakes has been statistically established for the contents of NO2, SO4, and NO3 ions. Active thermal denudation on the shores of these lakes increases water mineralization levels by an average of 42.8% and changes the concentrations of major ions Na, Ca, Mg, K, PO4, and HCO3.
Keywords: thermal denudation, small tundra lakes, hydrochemistry, ionic composition, climate changes, Yamal peninsula.
Recommended citation: Fakashchuk N.Yu., Dvornikov Yu.A., Opokina O.L., Khomutov A.V., 2023. The impact of the processes of thermal denudation on the ionic composition of small lakes in Central Yamal. Earth’s Cryosphere XXVII (4), 12–20.