The Uisu glacier system in: a) 1993, and b) 2019. Numbers 45 and 47 stand for two tributary glaciers according to the USSR glacier inventory (for explanation, see text)Source: own study based on the Landsat satellite imagery provided by the USGS Earth Explorer
Figure 3
Surface area of the Uisu glacier system in 1977–2019. Light grey bars: total area, white bars: area of the part without supraglacial cover, dark grey bars: area of supraglacial coverSource: own study
Figure 4
Surface velocity along the central line of the tongue of the Uisu glacier and Glacier No. 47 in the 1993–2019 periodSource: own study
Figure 5
Surface area of the supraglacial lakes in 1993–2019Source: own study
Figure 6
Geomorphological map of Uisu glacier forefieldSource: own study
Figure 7
Terminal zone of Uisu glacier: a) glacier front, b) supraglacial moraine with meltwater lakes and kettle holes, c) supraglacial material and outcrop of glacial ice with oblique foliation – view from the northern side of the valleySource: own study; aerial photos: Marcin Zegarek (a and b), terrestrial photo: Bogdan Gądek (c)
Figure 8
Fluvioglacial forefield of Uisu glacier: a) multi-channel bed of the Koksoy river, b) terrace in front of the glacier terminus. T1 – terrace 1, T2 – terrace 2Source: own study; aerial photos: Marcin Zegarek
Figure 9
Alluvial fans at the mouths of valleys located on the northern side of the terminal zone of the Uisu glacier: a) mouth of the eastern valley, b) mouth of the western valley (see Fig. 6). AF – alluvial fan, 1–4 old alluvial levels, RGm – rock glacier (rock-glacierised moraine), Gl – lateral edge of Uisu glacierSource: own study; aerial photo: Marcin Zegarek (a), terrestrial photo: Bogdan Gądek (b)
Figure 10
Geomorphology of the terminal zone of the Uisu glacier: a) slopes on the northern side; b) slopes on the southern side and forefield (Gl – front of the Uisu glacier, RGm – rock-glacierised moraine, RG – periglacial rock glacier, S – talus slope with solifluction lobes, AF – alluvial fan, 2–4 – old alluvial levels, LM – lateral moraine, T2 – fluvioglacial terrace 2; c) sorted polygons on the surface of terrace T2 (Fig. 10b)Source: own study; photos: Bogdan Gądek
List of Landsat satellite scenes used. MSS: MultiSpectral Scanner (Landsat 1), TM: Thematic Mapper (Landsat 5), ETM+: Enhanced Thematic Mapper + (Landsat 7), and OLI: Operational Land Imager (Landsat 8). “Date” shows day.month, and “P-R” shows path-row. Source: USGS Earth Explorer