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Different researchers have also estimated various values of ELA in this terrain (Table 6) using other methods. For example, Gardelle et al. (2013) used approximately 2000 Landsat images to estimate the ELA in the Karakoram and Hindu Kush mountains. Our calculations are in general agreement with the values listed in Table 6. However, our estimates of ELA for each of the individual watersheds within UIB show that with the exception of the Shyok watershed, the ELA is in the general range of 5,000–5,500 m. In the case of the Shyok watershed, the ELA is in the range of 6,000–6,200 m. This higher range of ELA in this watershed, compared to the other watersheds of the basin, can be ascribed to the greater aridity of this watershed compared to the other watersheds of the basin (Immerzeel et al. 2015, Figure 5).

Table 6

ELA in different parts of UIB as estimated variously

RegionELA (m)Source
Karakoram (central and western) 4,200–4,800 Young & Hewitt (1993)  
Karakoram–southern slopes 4,600–5,300 Owen & Benn (2005)  
Karakoram 4,750–5,310 Gardelle et al. (2013)  
Karakoram (central) 5,200 Mayer et al. (2010)  
Hindu Kush 4,890–5,210 Gardelle et al. (2013)  
Nanga Parbat, Western Himalayas 4,500–4,700 Owen & Benn (2005)  
Zanskar Range, Western Himalayas 5,500–5,800 Osmaston (1994)  
RegionELA (m)Source
Karakoram (central and western) 4,200–4,800 Young & Hewitt (1993)  
Karakoram–southern slopes 4,600–5,300 Owen & Benn (2005)  
Karakoram 4,750–5,310 Gardelle et al. (2013)  
Karakoram (central) 5,200 Mayer et al. (2010)  
Hindu Kush 4,890–5,210 Gardelle et al. (2013)  
Nanga Parbat, Western Himalayas 4,500–4,700 Owen & Benn (2005)  
Zanskar Range, Western Himalayas 5,500–5,800 Osmaston (1994)  

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