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Glaciers of Abramov.
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Abramov Glacier is located in the Chon-Alai region of the Osh region in the Alai Range. The length of the glacier is 9.0 kilometers, with an area of 25.2 kilometers square) located at the headwaters of the Kek-Suu River (Kyzyl-Suu River).
Since 1967, observations on the MHD program began on this glacier. The glacier's feeding area lies in a vast circus framed by steep snow-covered ridges. A wide, relatively clear glacier with one middle moraine descends to an altitude of 3620 meters above sea level.
Power of ice 2 kilometers from end of 160 - 170 meters. Between 1967 and 1976, the mass balance of the glacier fluctuated from + 82.2 to - 100.0 g / cm square, averaged -31.6 g / cm square per year. The average annual accumulation was 161.6 g / cm2 square, ablation -193.2 g / cm2 square.
The duration of the ablation period is from 100 to 160 days. Up to 90% of the melting of snow and ice occurred due to solar radiation. In the next 5 years (1967 - 1980), the average mass balance was also negative (-104.8 g / cm2 per year).
The speed of ice movement on the Abramov glacier usually does not exceed 20 - 30 centimeters per day. However, on this glacier, once every 10 to 11 years, ice is accelerated to 2 meters per day and the end of the glacier is advanced.
So, during the movement of the glacier in 1972 - 1973. the end of the glacier advanced 625 meters (Abramova Glacier. 1980; Fluctuations. 1985).
Authority:
"Glaciers." L.D. Dolgushin, G.B. Osipova. Series "Nature of the world." Moscow, the publishing house "Thought". 1989.