Академическое издательство «Гео»

Dendrochronology, Earth remote sensing, glacier fluctuations, lichenometry

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«Earth`s Cryosphere», 2016, Vol. XX, № 3, p. 87-95

Fluctuations of Terskol Glacier, Northern Caucasus, Russia

I.S. Bushueva1, O.N. Solomina1,2, N.A. Volodicheva3

1Institute of Geography, RAS, 29, Staromonetniy per., Moscow, 119017, Russia
2Tomsk State University, 36, Lenina ave., 634050, Tomsk, 634050, Russia
3Lomonosov Moscow State University, Department of Geography,
1, Leninskie Gory, Moscow, 119991, Russia; irinasbushueva@gmail.com

Reconstruction of fluctuations of Terskol Glacier situated on the south-western slope of Elbrus is presented. The reconstruction is based on remote sensing images of 1957, 1971, 1987, 1997, 2001, 2007 and 2009, maps, plans and photographs of the late 19th–20th centuries, as well as on modern photographs of the late 20th – the beginning of 21st centuries. As a result, 13 positions of the glacier’s edge have been created, and 10 moraines have been identified. Behind the last moraine complex (at the height of 2,550 m), indistinct remnants of the older moraines partly covered by a debris-flow have been revealed. Dating of junipers growing on these surfaces demonstrated that over the last 300 years Terskol Glacier had not moved below these levels. Therefore, over the last 300 years Terskol Glacier has fluctuated not more than 1,150 m in plane and 460 m in elevation. The glacier’s area has decreased over this time by 0.74 km2.

Dendrochronology, Earth remote sensing, glacier fluctuations, lichenometry
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