a
b
c
d
Fig. 1. Contours of glaciers No. 1 (Psire) − 3 (Psishi): a − on a topographic map, b − according to the image of the Landsat 7 ETM+ sensor of August 31, 2010, c − according to the image of the Landsat 8 OLI sensor of September 5, 2015 and d − according to the image of the Landsat 8 OLI TIRS sensor of September 11, 2020.
