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  • Articles  (56)
  • 2015-2019  (56)
  • 2015  (56)
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  • Articles  (56)
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  • 2015-2019  (56)
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  • 11
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    Evaluating the runoff of global-fallout cesium-137 from landscapes of the Ob river basin (2015)
    Springer
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    Publication Date: 2015-12-25
    Description: The activity of cesium-137 from global atmospheric fallouts was studied in the soils of three 1 st order catchment basins in the taiga, subtaiga, and forest-steppe zones in the Ob basin. Cesium-137 runoff from those catchment basins was evaluated to give 0.48–5.0 in the taiga, 14.9–15.3 in the subtaiga, and 14.1–15.7 mCi km –2 . in the forest-steppe zones. The published data on sediment delivery coefficients and the leveloped typification of river basins were used to extrapolate the obtained data on 137 Cs runoff to the area of developed semihumid and humid river basins under natural vegetation. The runoff of global-fallout 137 Cs from the Ob Basin never exceeds 4% of its total reserves.
    Print ISSN: 0097-8078
    Electronic ISSN: 1608-344X
    Topics: Biology , Geography , Geosciences
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  • 12
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    Hydrogeological prerequisites for industrial waste injection during the development of priority area of the Yurubcheno–Tokhomo field (2015)
    Springer
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    Publication Date: 2015-12-25
    Description: Detailed analysis of the geological and hydrogeological conditions in the Yurubcheno–Tokhomo zone of oil and gas accumulations showed the osinskii horizon of the Lower Cambrian to be of greatest interest for the disposal of large volumes of bottom and effluent water. Numerical physicochemical simulation of hydrogeochemical processes using a 3D model of groundwater flow between the injection well and the reservoir gave an estimate of the effect of industrial waste injection. The resulting changes in the mineralogical composition of the reservoir rock and its porosity-permeability are shown to be most considerable in the case of disposal of treated effluent water. The zone of technogenic metasomatosis, developing in the reservoir bed under the effect of waste disposal, was found to reach 800–840 m by the end of the fifth year of disposal site operation.
    Print ISSN: 0097-8078
    Electronic ISSN: 1608-344X
    Topics: Biology , Geography , Geosciences
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  • 13
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    Geoenvironmental response of the Yenisei Siberia mid-taiga landscapes to global warming during late XX–early XXI centuries (2015)
    Springer
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    Publication Date: 2015-12-25
    Description: The response of middle boreal landscapes in the Yenisei Siberia to climate warming is considered. Changes in the systems of exodynamics, natural permafrost and nonpermafrost landscapes are analyzed based on a series of studies. Permafrost landscapes are ranked by their susceptibility to climate warming. Changes in the habitats were identified. The aggravating problems of the local population in the sphere of the use of taiga resources, characterizing the current stage of changes in the environment and climate are demonstrated.
    Print ISSN: 0097-8078
    Electronic ISSN: 1608-344X
    Topics: Biology , Geography , Geosciences
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  • 14
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    Assessment of the environmental effect of placer gold mining in the Amur river basin (2015)
    Springer
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    Publication Date: 2015-12-25
    Description: Data of remote sensing of the Earth surface were used to carry out thematic mapping of watercourses affected by gold mining in the Amur R. basin and to evaluate their characteristics. GIS-technology underlay an attempt to give an overall estimate of the extent and distribution of the impact of gold-mining activities and to determine potential managerial actions to minimize it. The obtained data were used to construct a pioneer estimate of the effect of placer gold mining in the Far East region. Input data on gold mining for different river basins are given.
    Print ISSN: 0097-8078
    Electronic ISSN: 1608-344X
    Topics: Biology , Geography , Geosciences
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  • 15
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    Response of saturated soft soils to dynamic impact accompanying earthquakes (2015)
    Springer
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    Publication Date: 2015-12-25
    Description: The response of soft soils to intense earthquakes is discussed. A decrease or increase of the surface response depends on the joint effect of nonlinear and resonance processes in soft soils. The behavior of soft soils during strong earthquakes is exemplified. The possibility to predict their response to strong impacts based on calculations by computer programs is considered.
    Print ISSN: 0097-8078
    Electronic ISSN: 1608-344X
    Topics: Biology , Geography , Geosciences
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  • 16
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    Winter runoff variations in European Russia (2015)
    Springer
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    Publication Date: 2015-11-04
    Description: The space and time variations of winter low-water runoff and its major characteristics are considered. The study area includes the basins of major rivers in European Russia: the Northern Dvina, the Onega, the Mezen, the Volga, and Don, etc. Variations of the minimal, mean, and maximal runoff values in winter low-water season are evaluated against the background of climate changes in recent decades. The extent of such changes over period 1978–2010 is given and compared with period 1946–1977.
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    Electronic ISSN: 1608-344X
    Topics: Biology , Geography , Geosciences
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  • 17
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    Assessing the adverse load in two artificial water bodies of the Dubna C.: Diatom analysis (2015)
    Springer
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    Publication Date: 2015-11-04
    Description: Diatom complexes from two ponds and one lake were compared and analyzed. The samples were taken from modern bottom sediments. All water bodies are situated in Moscow oblast. The ponds in the boundaries of Dubna C. are of artificial origin, while Lake Glubokoe is a natural water body. The degree of adverse changes in the structure of diatom complexes does not depend on the origin of the water body but is determined by the overall level of anthropogenic load. The study suggests the conclusion that the results of studies of diatom complexes from natural lakes and artificial ponds can be combined.
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    Electronic ISSN: 1608-344X
    Topics: Biology , Geography , Geosciences
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  • 18
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    Changes in the hydrochemical characteristics of Eastern-Donbass rivers in the context of mass closing down of unprofitable coal producers (2015)
    Springer
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    Publication Date: 2015-11-04
    Description: The results of integrated studies have been used to give a hydrochemical estimate of river water in Eastern Donbass. The technogenic waters of liquidated mines have been shown to contribute much to the changes in river water chemistry in the region.
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    Electronic ISSN: 1608-344X
    Topics: Biology , Geography , Geosciences
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  • 19
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    Hydrodynamic basis of formation of large-scale water circulation in the caspian sea: 1. asymptotic theory (2015)
    Springer
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    Publication Date: 2015-11-04
    Description: Hydrodynamic asymptotic theory of formation of large-scale circulation of Caspian Sea water is proposed. Seasonally averaged mean annual currents are studied; the problem is formulated under a linear baroclinic model of steady currents. The vertical Ekman number E V = A /Ω H 2 ( A is the kinematic coefficient of vertical turbulent exchange, Ω = 2ω sinφ is the Coriolis parameter, H is the mean sea depth) is a small parameter E V ≪ 1which allows the method of matched asymptotic expansions to be used. Depressions in the Middle and Southern Caspian are shown to play the principal role in the formation of the structure of large-scale water circulation. According to the proposed theory, the isobath passing through the saddle point on the Apsheron step (separatrix isobath) plays an important part in the dynamics of currents.
    Print ISSN: 0097-8078
    Electronic ISSN: 1608-344X
    Topics: Biology , Geography , Geosciences
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  • 20
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    Physically based simulating long-term dynamics of diurnal variations of river runoff and snow water equivalent in the Kolyma River Basin (2015)
    Springer
    Details
    Publication Date: 2015-11-04
    Description: The potentialities of the technique, developed previously for simulating the runoff hydrographs of northern rivers, as applied to the Kolyma R., flowing under the severe conditions of the Northeastern Siberia, are examined. The technique is based on a land surface model SWAP with input data based on meteorological forcing data derived from observations from meteorological stations and on global data sets of land surface parameters. The ability of the SWAP model to reproduce the long-term dynamics of basin-averaged snow depth and snow water equivalent was also studied.
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    Electronic ISSN: 1608-344X
    Topics: Biology , Geography , Geosciences
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