EM 1110-2-2907
1 October 2003
Figure 2-22. Spectral reflectance of one variety of soil. Graph developed
for Prospect (2002 and 2003) using Aster Spectral Library
(http://speclib.jpl.nasa.gov/) data
(5) Spectral Reflectance of Water. Spectral reflectance of clear water (Figure 2-23)
is low in all portions of the spectrum. Reflectance increases in the visible portion when
materials are suspended in the water (Lillesand and Kiefer, 1994).
Spectral Reflectance Curve for Water
100
80
Clear water has lowreflectance in Visible, Near, and Mid-IR; presence
60
of material suspended in the water (e.g. sediment) raises reflectance in
Visible
40
20
0
0
0.5
1
1.5
2
2.5
Wa v e le ngt h ( um )
Figure 2-23. Spectral reflectance of water. Graph developed for Prospect (2002 and 2003)
using Aster Spectral Library (http://speclib.jpl.nasa.gov/) data
2-26
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