Prysov D.A., Musokhranova A.V. - The Influence of Climatic Factors on the Annual flow of the Rivers of the Permafrost Zone of Siberia

Written by Erkin Turdibaev

Tuesday, 12 July 2016

The article is devoted to the question of the influence of climatic factors on the annual flow of the rivers. The relevance of the results of the examination of the annual rivers runoff in the permafrost zone of Central Siberia due to the scale and intensity of impacts of climate change on the hydrological regime of the territories of permafrost. The aim of the study was to analyze the dependence of changes of annual runoff of rivers of the permafrost zone of Central Siberia from climatic factors. Stock materials of the hydro meteorological service administration were used they were long-term observations of runoff at hydrological stations and the precipitation at the meteorological stations of the study area and reference data. The duration of observations at individual facilities is more than 50 years and includes years with different hydro-climatic setting. In the processing and analysis of data for construction of the dependence of the annual runoff from climatic factors was used the method of multiple regression analysis. A study of the annual flow of rivers on the territory of the nine catchments in the permafrost zone of Middle Siberia was performed. Equations reflecting the dependence of annual runoff of rivers from the complex hydro-climatic parameters were obtained. Despite the fact that the role of climatic factors in the formation of annual runoff in the cryolithic zone is leading, other factors such as forest vegetation, soils, sizes and geological features of the watershed, are also important. Analysis of hydrological models suggests that their annual runoffs are strongly associated with a complex of hydro-climatic parameters. For all watercourses, increased runoff was associated with the increase in annual values of precipitation and decreases with increasing may temperatures. The increase in annual runoff is also associated with the growth of air temperature in June and September, which indirectly indicates that in the formation of the river flow a certain part adopts cryogenic moisture of periodically thawed upper soil horizons. Download (in Russian) (pdf, 1,93 Mb) Source: http://cyberleninka.ru/

 

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