"T 
M 
  
  
  
2 : a^ 
== va A. % | 
      
     
KIEL sac m. 3 ^ 
Fig, 4 4 SY M Observed on October 13, 1989 Dec 
in l 
spri 
the 
sect 
yet 
and 
  
Scie 
of t 
  
n n Fir. 5 LANDSAT/MSS imass observed on September CS 1991 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 7, Budapest, 1998