4 research outputs found

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

    No full text
    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

    Methods of reconstruction of a zonal runoff in Western Siberia in Holocene

    No full text
    The relevance of the research is determined by the necessity to study paleohydrological conditions, which play an important role in formation of geochemical anomalies. The methodology of such studies is currently not sufficiently developed, that affects the reasonableness and effectiveness of searches of minerals. The aim of the research is to develop and substantiate the methods of paleohydrological reconstructions for determining the total runoff caused by the zonal climate. Methods: geographical and hydrological and statistical methods, mathematical modeling of hydrological processes. Results and conclusions. The authors have developed the mathematical model of formation of total zonal runoff. On its basis the methodology of paleohydrological reconstructions was proposed and tested. By means of the model the authors determined the non-synchronous change in the zonal water runoff in northern and central parts of Western Siberia, caused by different trends of climatic changes and geo-ecological conditions. It was shown that more abrupt and differently directed of water runoff fluctuations during the Holocene are more typical for northern regions, currently corresponding to the northern taiga subzone, forest tundra and tundra zones. The changes in of water runoff are less pronounced and more closely associated with wetland processes in the subzone of the southern and middle taiga. The authors made the conclusions that the increase in the water runoff variability as a whole would lead to a certain growth in the variability of the contents of a number of dissolved substances and consequently the probability of formation of hydrogeochemical anomalies. In the medium term the increase in forested catchments should be expected with continued warming. At the same time the increase in total water runoff is probable in areas with less than 40 % swamping

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

    No full text
    Актуальность. Знание палеогидрогеологических условий является важным фактором в решении задач оценки ресурсов подземных вод и их качества, поисков полезных ископаемых, проектировании полигонов бытовых и промышленных отходов, а также необходимым условием разработки методов долгосрочного прогноза изменений окружающей среды. В решении ряда таких задач для исследуемого региона определяющую роль играют процессы водообмена (общего и подземного). Цель исследования: разработка и обоснование методики палеогидрологических реконструкций подземного стока, построение математической модели на ее основе и выявление долгосрочных изменений подземного стока в Западной Сибири и факторов, их определяющих. Методы: географогидрологический и статистические методы, математическое моделирование гидрологических и гидрогеологических процессов. Результаты и выводы. Предложена методика палеогидрологических реконструкций подземного стока. На основе опубликованных среднемноголетних данных построена математическая модель. Получены выводы о вероятностных изменениях суммарного и подземного стока при пяти различных сценариях изменения температуры воздуха и атмосферного увлажнения. Выявлена зависимость между годовым подземным стоком от суммы атмосферных осадков за тёплый период и коэффициента суммарного стока; на основе этой зависимости разработана и апробирована методика реконструкции подземного стока на примере водосборов рек Чузик (южнотаёжная подзона, элемент речной сети Оби) и Турухан (граница северной тайги и лесотундры, приток Енисея); показано, что увеличение подземного стока возможно при росте атмосферных осадков и при похолодании; уменьшение подземного стока определяется, прежде всего, уменьшением атмосферного увлажнения и ростом заболоченности.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

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

    No full text
    Актуальность. Знание палеогидрогеологических условий является важным фактором в решении задач оценки ресурсов подземных вод и их качества, поисков полезных ископаемых, проектировании полигонов бытовых и промышленных отходов, а также необходимым условием разработки методов долгосрочного прогноза изменений окружающей среды. В решении ряда таких задач для исследуемого региона определяющую роль играют процессы водообмена (общего и подземного). Цель исследования: разработка и обоснование методики палеогидрологических реконструкций подземного стока, построение математической модели на ее основе и выявление долгосрочных изменений подземного стока в Западной Сибири и факторов, их определяющих. Методы: географогидрологический и статистические методы, математическое моделирование гидрологических и гидрогеологических процессов. Результаты и выводы. Предложена методика палеогидрологических реконструкций подземного стока. На основе опубликованных среднемноголетних данных построена математическая модель. Получены выводы о вероятностных изменениях суммарного и подземного стока при пяти различных сценариях изменения температуры воздуха и атмосферного увлажнения. Выявлена зависимость между годовым подземным стоком от суммы атмосферных осадков за тёплый период и коэффициента суммарного стока; на основе этой зависимости разработана и апробирована методика реконструкции подземного стока на примере водосборов рек Чузик (южнотаёжная подзона, элемент речной сети Оби) и Турухан (граница северной тайги и лесотундры, приток Енисея); показано, что увеличение подземного стока возможно при росте атмосферных осадков и при похолодании; уменьшение подземного стока определяется, прежде всего, уменьшением атмосферного увлажнения и ростом заболоченности.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
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