30 research outputs found

    A model of intra-annual flow distribution with scanty observational data

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    A model of intra-annual (mean annual and mean monthly) flow distribution and methods of its application to reconstructing the zonal runoff in West Siberia Plain are developed with scanty initial information. Analysis of the results shows that the model allows us to satisfactorily describe the observable changes in the total runoff and its groundwater component. The observed increase in the groundwater levels in the taiga zone of Western Siberia may occur even with decreasing annual precipitation. Increasing air temperature at the beginning and end of the winter period leads to an increase in the underground runoff. In addition, during the winter period the average air temperature increases and, as a consequence, the soil ice content decreases and the filtration properties of the soil increase

    Basin Model of Total Dissolved Salts Transformation in Water of a Small River (the Kirgizka River, Tomsk, Russia)

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    The basin model of total dissolved salt transformation in river water has been developed. It was tested in the Kirgizka River, the right tributary of the Tom River (Russia, Western Siberia, Tomsk). It was shown that the river system has the capacity of selfpurification and is characterized by rather stable salt composition. It is explained by the fact that the growth in dissolved salt concentration in river water is limited to some extent by, firstly, dilution of more mineralized groundwaters drained by rivers, and, secondly, relatively low solubility of some compounds

    Water–rock interaction within the oligotrophic peat bog (part of the Vasyugan Swamp, Western Siberia)

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    Geochemical conditions of the formation of various minerals were studied within the oligotrophic pine-shrub and sphagnum peat bog. It was shown that at least two complex barriers function within the peat deposit. These barriers correspond to the changes in the advective and diffusion transfer of substances and promote the immobilization of Fe and a number of other chemical elements. The upper complex geochemical (redox, sulfide and sorption) barrier occurs approximately at the depths of 0.40 to 1.25 m. The lower complex geochemical (alkaline and sorption) and mechanical barriers are located at the bottom part of the peat deposit (the depth of 2.25–2.50 m)

    Method of calculation and potential changes in groundwater flow in Western Siberia in holocene

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    The relevance of the research. Knowledge of paleohydrogeological conditions is the important factor in solving the problems of groundwater resources assessment, mineral exploration, engineering domestic and industrial wastes landfill and prerequisite for development of longterm predicting methods of environmental changes. The aim of research is to develop and substantiate the methods of paleohydrogeological reconstructions of underground water flow and to identify longterm changes of groundwater flow in Western Siberia and the factors that determine them. Methods: geographical and hydrological and statistical methods, mathematical modeling of hydrological and hydrogeological processes. Results and conclusions. The authors have proposed the technique of groundwater runoff paleohydrogeological reconstructions and determined the relationship between the annual underground runoff from amount of precipitation for the warm period and the coefficient of the total flow. Based on this relationship they developed the method of the underground runoff reconstruction and tested it by the example of watersheds of the rivers Chuzik (South taiga subzone, the element of the Ob river synodic) and Turukhan (border of northern taiga and forest tundra, tributary of the Yenisei). It was shown that the increase in groundwater runoff is possible at growth of atmospheric precipitation and climatic cooling. Decrease groundwater runoff is determined by the reduction in atmospheric moistening and growth of waterlogging