Abstract
The paper presents a generalized algorithm for the simulation of multiyear cycles in variations of the chemical composition of lake waters with regard for the seasonal specifics of hydrogeochemical processes. Data were obtained on the behavior of the hydrogeological system during a time span of 500–1000 years. Each of the simulated model cycles involved a successively alternating “summer-winter” time periods. Terrestrial exchange fluxes between reservoirs, groundwater inflow, falls of atmospheric precipitate, and the evaporation of lake water were taken into account for summer periods, whereas winter conditions were simulated as corresponding to the development of the ice phase, the absence of water exchange fluxes, a change from oxidizing to reducing conditions, and the burial of solid phases in the sediments. The results of our physicochemical simulations with the use of data on the composition of natural hydrogeological systems are in good agreement with natural observations and make it possible to realistically predict the evolution of small lakes in the Ol’khon area.
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Original Russian Text © O.A. Sklyarova, K.V. Chudnenko, V.A. Bychinskii, 2011, published in Geokhimiya, 2011, Vol. 49, No. 8, pp. 875–885.
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Sklyarova, O.A., Chudnenko, K.V. & Bychinskii, V.A. Physicochemical simulation of the evolution of small lakes in a cold climate. Geochem. Int. 49, 827–837 (2011). https://doi.org/10.1134/S0016702911080088
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DOI: https://doi.org/10.1134/S0016702911080088