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geoj486-sup-0001-figures1.tif3470K

Figure S1 Topographic map with the 1910 Carruthers Royal Geographic Society expedition route to the Turgen Mountains

Source: Carruthers (1912)

geoj486-sup-0002-figures2.tif537K

Figure S2 The repeated photograph from 2010 at photo point PP04 captures two glaciers converging in a medial moraine around a nunatak to the east of East Turgen Glacier. Calculations of the distance between the top of the nunatak and the glacier surface revealed that the glacier down-wasted by around 70 m from 1910 to 2010

Source: photo by Kevin McManigal (July 2010)

geoj486-sup-0003-figures3.tif2260K

Figure S3 Photo point PP07, looking southeast, is located within the moraine of West Turgen Glacier. In this photograph from 2010 the glacier tongue is completely absent, changing the structure of the moraines noticeably

Source: photo by Kevin McManigal (July 2010)

geoj486-sup-0004-figures4.tif3227K

Figure S4 Identification of glaciers in the Turgen Mountains using Landsat TM 5 band ratios. In 2010, glaciers covered 31.8 km2

geoj486-sup-0005-figures5.tif2329K

Figure S5 Photo point PP05, looking south, is located on the ridge above East Turgen Glacier that forms the divide between the Turgen and Tsagaan watersheds. In this 2010 photograph, the area of label ‘A’ shows a substantial ablation of ice behind the horn. The glacier has melted down to exposed moraine and appears to no longer flow around the south side of the horn. There is also a significant loss of ice on the slopes of the background peak labelled ‘B’ and ‘C,’ with considerably more exposed rock in 2010. Label ‘1’ on the high slopes of the peak looks similar in both photographs; however, the 2010 photograph shows bare ice in this area, indicating that the equilibrium line may have risen high onto the peak over the last century. The slope also looks to be steeper in the 2010 photograph, indicating a loss of volume

Source: photo by Kevin McManigal (July 2010)

geoj486-sup-0006-figures6.tif2285K

Figure S6 Photo point PP06, looking east, is close to PP05 on the ridge above East Turgen Glacier that forms the divide between the Turgen and Tsagaan watersheds. In the 2010 repeat photograph, the steep glacier in area ‘A’ has wasted severely in the preceding hundred years and no longer flows into the glacier below it. The snow and ice on the slopes in areas ‘B’ and ‘C’ have completely ablated exposing bare rock and moraines. Again, the area of label ‘1’ on the high slopes looks similar between the years, but the ice appears to be bare and steeper in the 2010 photograph, indicating that the ice there has at least begun to recede

Source: photo by Kevin McManigal (July 2010)

geoj486-sup-0007-figures7.tif2255K

Figure S7 Photo point PP02 is located on the slope just east of Advanced Base Camp, looking south towards Turgen Peak and the end moraine of West Turgen Glacier to the left. In this 2010 photograph, the summit ice cap looks unchanged compared with 1910, but the small glacier descending from the cirque on the right has retreated, along with a reduction of ice in the centre frame seracs. The debris-covered ice in the centre of the moraine has also completely ablated

Source: photo by Kevin McManigal (July 2010)

geoj486-sup-0008-figures8.tif2140K

Figure S8 Photo point PP08, looking south at Turgen Peak, is located within the moraine of West Turgen Glacier. In this photograph from 2010, the debris-covered ice is completely absent from the moraine in 2010, but the summit appears almost identical compared with 1910

Source: photo by Kevin McManigal (July 2010)

geoj486-sup-0009-figures9.tif2098K

Figure S9 Photo point PP03, looking west at Turgen Peak, is located on the ridge above East Turgen Glacier that forms the divide between the Turgen and Tsagaan watersheds. In the 2010 photograph, the glacial cap looks to be almost the same as in 1910. The ice on the slope in the foreground is covered with dust only in the 2010 photograph

Source: photo by Kevin McManigal (July 2010)

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