a
b
c
d
Fig. 10. Contours of glaciers No. 77 − 80 (clichi), No. 81 − 84: a − on a topographic map, b − according to the Landsat 7 ETM+ sensor image of August 31, 2010, c − according to the Landsat 7 ETM+ sensor image of September 6, 2015, d − according to the Landsat 8 OLI TIRS sensor image of September 11, 2020.
