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The monitoring of state of the Leviy Aktru Glacier by means of hydrometry
https://doi.org/10.7868/S2412376525040041
Abstract
The formation of runoff is a multifactorial process which is revealed in different ways under the influence of natural and climatic conditions. This is particularly evident in conditions of the high heterogeneity characteristic of mountain-glacial basins. Measurements of glacier runoff do not allow for full control of glaciological monitoring data, but they make it possible to understand better the physical processes that connect local meteorological conditions and ice melting. Hydrological observations during the summers of 2022 and 2023 demonstrated that the runoff hydrograph from the Leviy Aktru Glacier is primarily formed by liquid precipitation and glacier ablation over the previous 48 hours. To extend the series of mean summer temperatures and precipitation totals, constraint equations were applied using data from the Aktru–Goluboe Ozero weather station (operational since August 2019) and the Kara-Tyurek meteorological station. Based on the obtained dependencies, the series of water flow from the Leviy Akhtru glacier in June–August was extended, and the gaps in the observations of ablation were restored. A comparative analysis of the restored and measured values revealed that the calculated dependencies overestimate the values of ablation in years with lower summer temperatures, which are characterized by summer snowfalls. According to the Kara-Tyurek weather station, the critical average summer temperature above which the probability of snowfall decreases and the intensity of melting of the Leviy Aktru glacier increases is +5.8 ˚C.
About the Authors
S. G. KopysovRussian Federation
Tomsk
D. A. Vershinin
Russian Federation
Tomsk
A. A. Erofeev
Russian Federation
Tomsk
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Supplementary files
For citation: Kopysov S.G., Vershinin D.A., Erofeev A.A. The monitoring of state of the Leviy Aktru Glacier by means of hydrometry. Ice and Snow. 2025;65(4):573-583. https://doi.org/10.7868/S2412376525040041
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