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Table 2 Snow cover sub classes and change detection (1990–2010)

From: Snow cover dynamics and geohazards: a case study of Bhilangna watershed, Uttarakhand Himalaya, India

Snow cover classes NDSI threshold value (Hall et al. 1995, 1998) 1990 2010 Change (1990–2010)
Snow area Snow area Snow area
km2 (%) km2 (%) km2
Frost 0.414 37.82 30.49 18.73 19.60 −19.09
Fine granular 0.611 85.74 69.12 75.68 79.22 −10.06
Medium granular 0.848 0.47 0.37 1.11 1.16 −0.64
Coarse granular 0.937 0.0018 0.0014 Not Traceable -
  1. Source: Landsat TM