639 
1 
1 
25-7) 
S#' : 
V 
: 
Fig. 2a - Unsupervised multispectral classification from Fig. 1, 
before textural homogenization. 
Eleven textural clusters corresponding to water classes 
and swampy areas are mapped. Dry terrains appear in white 
(non classified). Differentiation in waters (5 classes in 
the sea, 3 classes in fresh waters) depends on depth, 
sediment and algae concentration, salinity. Differentia 
tion in swampy areas (3 classes) depends on vegetation and 
water content• 
magm