Abstract
Over the period of more than 30 years the mass balance observations have been carried on the several representative glaciers of the Tien Shan. But these data are not sufficient to explain the asynchronous degradation of the glaciation in different parts of the mountains. Special field observations were undertaken to study asynchronous changes in mass balance. The programme used an imitation model of the mass balance monitoring (Dyurgerov 1988). According to the model the annual values of glacier mass balance bn and equilibrium line altitude ELAn were replaced by the current values of bt and ELAt measured during the ablation season. The imitation model was evaluated on Tuyuksu Glacier in 1987–1989. The results showed that the function bn(ELAn) can be replaced by bt(ELAt) which is nonlinear and can be approximated by the hypsographic curve of the glacier. After these tests the similar measurements were accomplished in summer of 1989 on the Tuyuksu Glacier, Sary-Tor and Glacier No. 1. It was established that the asynchronous changes in mass balance were primarily due to the increase of summer snow accumulation eastward the Tien Shan. The second reason was the difference in the altitudinal position of the glaciers.
Similar content being viewed by others
References
Ageta, Y.; Higuchi, K.: Estimation of mass balance components of a summer-accumulation type glacier in Nepal Himalaya. Geogr. Annaler 66A, 3, 249–255 (1984)
Braithwaite, R.: Can the mass balance of a glacier be estimated from its equilibrium line altitude? J. Glaciol. 30, 106, 364–368 (1984)
Dyurgerov, M. B.: Cause and mechanism of fluctuation of Alpine glaciers. J. Glaciol & Geocryol. 13, 2, 95–106 (1991) (in Chinese with English summary)
Dyurgerov, M. B.: The methods and programme of observations of the fluctuations external mass-exchange and mass balance of glaciers. Data of Glaciol. Studies 64, 153–163 (1988) (in Russian with English summary)
Glacier mass balance bulletin. Bulletin No. 1 (1988–1989). Ed. by W. Haeberli and E. Herren. IAHS(ICSI)-UNEP-UNESCO 1991.
Haeberli, W. (ed.): Fluctuations of glaciers 1975–1980 (Vol. IV). ICSI/IAHS and UNESCO, Paris 1980.
Haeberli, W.; Muller, P. (eds.): Fluctuations of glaciers 1980–1985 (Vol. V). ICSI/IAHS and UNESCO, Paris 1988.
Kasser, P. (ed.): Fluctuations of glaciers 1965–1970 (Vol. II). ICSI/IAHS and UNESCO, Paris 1967.
Kuhn, M.; Markl, G.; Kasser, G.; Nickus, U.; Obleitner, F.; Schneider, H.: Fluctuations of climate and mass balance: different responses of two adjacent glaciers. Zeit. für Gletscherkunde und Glazialgeologie 21, 409–416 (1985)
Kunakhovitch, M. G.: Mountain glacier mass balance: similarity and numerical computation. Summary of the doctoral dissertation. Moscov 1991. (in Russian)
Makarevich, K. G.; Vilesov, E. N.; Shabanov, P. F.; Golovkova, R. G.; Denisova, T. Ja.: Glacier regime of the Northern Tian Shan for the last 25 years (from 1956 to 1981). Data of Glaciol. Studies 54, 60–68 (1985) (in Russian with English summary)
Meier, M. F.: Proposed definitions for glacier mass budget terms. J. Glaciol. 4, 33, 252–261 (1962)
Mikhalenko, V. N.: The base glacier use for mass balance studies of glacier systems. Summary of the doctoral dissertation. Moscow 1990. (in Russian)
Müller, F. (ed.): Fluctuations of glaciers 1970–1975 (Vol. III). ICSI/IAHS and UNESCO, Paris 1977.
Palgov, N. N.: The firn line as an indicator of the hydrological regime of glaciers. Thermal and water regime of the Kazakhstan glaciers. 141–147. Nauka Press, Alma-Ata 1969 (in Russian)
Shumskii, P. A.: Principles of structural glaciology. New York 1964.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Dyurgerov, M.B., Mikhalenko, V.N., Kunakhovitch, M.G. et al. On the cause of glacier mass balance variations in the Tian Shan Mountains. GeoJournal 33, 311–317 (1994). https://doi.org/10.1007/BF00812879
Issue Date:
DOI: https://doi.org/10.1007/BF00812879