Identify features visually and by examining histograms. The first map is a deep water feature: Landsat4 TM - 6; Red 3, Green 2, Blue 1; layer 4 spike between 12 & 18. Map 2 is a glacial feature: Landsat5 TM - 6; Red 4, Green 3, Blue 2; layers 5 & 6 spike at 9-11. Map 3 is a shallow water feature/low absorbance; Landsat5 TM - 6; Red 3, Green 2, Blue 1; True colors.
Deep Water Feature
Glacial Feature
Shallow Water
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