Some results of long-term variability of avalanche activity of CIS mountains

Abstract

The work present the analysis of the long variation of avalanche activity of former USSR (CIS) mountains by the data of regular observations. There were determined the periods of activigation and reduction of avalanche formation with different synchronization of separate groups of regions. The common territorial time curves of the avalanche activity were derive for 11 of 13 mountains areas of CIS being analyzed. For Tien Shan and Caucasus the generel tendencies of the long-term variation of avalanche formation was differentiated in more details. For some regions the relationship is established between the avalanche formation and climatic factors (air temperature, winter precipitation).The tendency to the avalanche activity decrease on the course of the last few years, revealed on the basis of the analysis is testified by the independent observational data.