Change in the Minimum Runoff of the Ural River Basin
https://doi.org/10.31857/S2587556621060133
Abstract
Features of transformation of the minimum runoff parameters in the Ural River basin are considered, taking into account modern trends in the water regime of rivers in the European part of Russia. The problem of spatial and temporal changes in river runoff (including minimum) is especially relevant for regions with insufficient and unstable moisture. Such territories include the Ural River basin, most of which is located within the steppe, semi-desert, and desert zones. The analysis of the dynamics of average monthly and 30-day water discharges during the period of minimum runoff for the rivers of the studied basin is carried out. Changes in the parameters of low water phases have been established, in particular, a shift in the dates of the onset of the period of the minimum 30-day runoff of the summer–autumn and winter low-water periods. Statistical characteristics of the minimum runoff of the winter season in the Ural River basin in various railings are presented. A steady decrease in the variability of the minimum runoff of low-water phases, primarily of the winter low-water period, was noted. In conclusion, the need to consider the modern dynamics of the minimum runoff for solving the problems of the integrated use of water resources of transboundary river basins of the steppe zone is updated.
Keywords
water regime,
steppe zone,
minimum runoff,
dry weather runoff,
dry period,
zero f low,
use of water resources
Supporting agencies: This work was prepared within the framework of a state project no. АААА-А21-121011190016-1 of the Institute of the Steppe, Ural Branch, Russian Academy of Sciences.
About the Authors
Zh. T. Sivokhip
Institute of Steppe, Ural Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Orenburg
V. M. Pavleichik
Institute of Steppe, Ural Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Orenburg
Yu. A. Padalko
Institute of Steppe, Ural Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Orenburg
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For citations:
Sivokhip Zh.T., Pavleichik V.M., Padalko Yu.A. Change in the Minimum Runoff of the Ural River Basin. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2021;85(6):900-913. (In Russ.) https://doi.org/10.31857/S2587556621060133
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