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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