Abstract
In order to evaluate the contribution of snow avalanches, coming from outside the glacier limits, into the seasonal accumulation, an original algorithm is proposed for glaciers with ongoing terrestrial mass balance programme. It was tested on the Djankuat Glacier, Caucasus. A case study was realized for 1998/99 balance year when accumulation value was the closest to its long-term mean over the 46-year-long monitoring period. Snow avalanche feeding turned out to be only 2.8 per cent of total accumulation that is about an order of magnitude smaller than assumed hitherto.
Highlights
Avalanche feeding of the Djankuat GlacierСтатья принята к печати 16 декабря 2014 г
In order to evaluate the contribution of snow avalanches, coming from outside the glacier limits, into the seasonal accumulation, an original algorithm is proposed for glaciers with ongoing terrestrial mass balance programme
Snow avalanche feeding turned out to be only 2.8 per cent of total accumulation that is about an order of magnitude smaller than assumed hitherto
Summary
Статья принята к печати 16 декабря 2014 г. Аккумуляция, лавинное питание, ледник, снегомерная съёмка, снежная лавина. Лавинное питание относится к основным компонентам приходной статьи вещественного баланса ледника. На которых возможны прямые наземные масс-балансовые измерения, предлагается расчётная схема, позволяющая выделить из всей массы накопившегося сезонного снега объём лавинного питания, поступающего из-за пределов ледника. Экспериментальный алгоритм был получен на леднике Джанкуат в сезон 1998/99 г., когда аккумуляция минимально отличалась от своего медианного значения за весь 46‐летний ряд наблюдений. In order to evaluate the contribution of snow avalanches, coming from outside the glacier limits, into the seasonal accumulation, an original algorithm is proposed for glaciers with ongoing terrestrial mass balance programme. It was tested on the Djankuat Glacier, Caucasus. Snow avalanche feeding turned out to be only 2.8 per cent of total accumulation that is about an order of magnitude smaller than assumed hitherto
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