a
b
c
d
Fig. 43. Contours of glaciers No. 287 − 290 (Khalde): a − according to the topographic map, b − according to the Landsat 5 TM sensor image of August 24, 2010, c − according to the Landsat 8 OLI TIRS sensor image of September 12, 2017, d − according to the Landsat 8 OLI TIRS sensor image of September 20, 2020.
