HYDROLOGY OF THE VANCH RIVER THE TRIBUTARY OF THE TRANSBOUNDARY PYANJ RIVER UNDER CLIMATE CHANGE
Ключевые слова:
Mountain Pamir, Pyanj river basin,, snow, runoff, orography, Vanch river, climate, hydrograph.Аннотация
For the period 1958-2018, the atmospheric precipitation in the Vanch river basin remained almost
unchanged, due to the free penetration of wet masses of Mediterranean and Caucasian cyclones and the relatively
weak influence of orography of the mountainous area. The average annual temperature of the considered period is
characterized by weak increases of 3·10-3 о
С/year. The effect of climate change on river runoff was determined by
comparing their values in the two periods 1940-1970 and 1986-2016, which showed a significant increase for the
period 1986-2018. The Vanch river hydrograph in the corresponding periods showed the shift of maximum runoff
value to the left, which indicates an early period of melting of the snow cover and glaciers on the river upstream.
