LONG-TERM CHANGES IN SNOW AVALANCHE CHARACTERISTICS IN THE REGIONS OF THE KAMCHIK PASS AND THE CHIMGAN VALLEY (WESTERN TIAN SHAN)
Authors
- Eleonora R. Semakova Ulugh beg Astronomical Institute of the Uzbekistan Academy of Sciences, Tashkent, Uzbekistan
- Victor P. Safronov Center of Hydrometeorological Service of the Republic of Uzbekistan, Tashkent, Uzbekistan
- Albert S. Popov Center of Hydrometeorological Service of the Republic of Uzbekistan, Tashkent, Uzbekistan
DOI:
https://doi.org/10.34753/HS.2022.4.3.267+ Keywords
+ Abstract
Information about changes in snow avalanche activity due to ongoing climate change is necessary for reasonable reliable protection in mountain regions especially in areas with developed economic and recreational activities. The changes in the maximum snow depth at the meteorological site during the winter period, the number of days with snow cover, the number of avalanches per year, the duration of the avalanche period, the number of avalanche periods, the maximum and total volume of avalanches were considered for two regions located in the spurs of the Chatkal and the Kuraminsky Ridges, the Western Tien-Shan. The dynamics of these characteristics was compared with the indicators of the average monthly air temperature and the precipitation sum for the entire observation period since 1980-s and for some individual periods in which multidirectional changes in some indicators were identified. An assessment of current changes was compared to the 30-year WMO climate normal for 1981–2010. The previously identified indicative climate characteristics which determine the regime of snow accumulation and avalanching in these areas were refined. The most important indicators to assess the maximum values of avalanche characteristics are the average air temperature in January and the temperature and precipitation sums from November to March / April. Changes in meteorological conditions in April play an important role in assessing changes in the duration of the avalanche period. The resulting dependences can serve as a basis for estimating avalanche indicators for the future taking into account possible climate change scenarios.
+ Author Biographies
eLibrary (РИНЦ) ORCID ID Scopus ID Прочие 8420-6855 0000-0002-0407-2373 54421062400 G-5396-2019 ORCID ID 0009-0007-5393-1975 eLibrary (РИНЦ) ORCID ID Scopus ID Прочие
Eleonora R. Semakova, Ulugh beg Astronomical Institute of the Uzbekistan Academy of Sciences, Tashkent, Uzbekistan
SPIN-код
Victor P. Safronov, Center of Hydrometeorological Service of the Republic of Uzbekistan, Tashkent, Uzbekistan
Albert S. Popov, Center of Hydrometeorological Service of the Republic of Uzbekistan, Tashkent, Uzbekistan
SPIN-код
+ References
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