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IAPRS & SIS, Vol.34, Part 7, “Resource and Environmental Monitoring", Hyderabad, India, 2002 
Figure 1.  Kassandra peninsula from map dn |: 
243 indicative altitudes in meters, [J area corresponding to Figure 2. 
250,000 (reduced 3 times). — axis of flight, 
  
  
  
  
  
S ea L 7 E Su AIT y 7 
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Figure 2. — Aerial photographic interpretation — (original scale 1: 42,000, reduced). -x-x- watershed, 
34 drainage, - - - road, —-. — . — terrain analysis units (I area of gentle slope, II area of drainage basin), 1 area of erosion, 2 
landslides, 3 forests, 4 cultivated land, 5 built-up area. 
Stereoscopic study for every pair of aerial photographs in all the 
strips followed, using the known photointerpretation criteria. 
Some of the resulted observations and comments are listed 
below conserning elements of terrain analysis (t/a) (Lillesand 
TM et al, 1987), from the aspect of using this term (t/a) in this 
paper (subjects of civil engineer). 
* Significant tonal differences: dark tone in forest areas, light 
tone in areas of erosion and sandy beaches. 
* Different texture because of different land cover and 
processes. 
* Linear features concerning drainage network roads, shoreline. 
* Drainage network was detected in detail. The scale of aerial 
photographs was suitable to evaluate the hydrologic status of 
Kassandra peninsula (Meijerink A.M., 1985, Meijerink A.M J. 
et al., 1987) 
* The boundaries of forest areas were outlined. 
623 
* Areas of erosion, landslides, built-up areas were also detected. 
The total consideration of the above observations gives the 
physiognomy of the area, that generally presents a central 
water-divide with slopes on both sides, where drainage network 
is developed with outlets to the sea. 
Drainage basins of different size and shape that are formed, as 
well some areas of gentle slopes that are recognised, comprise 
the two basic forms-units of terrain analysis. An example is 
presented in Fig. 2. 
2.2. Satellite data 
Satellite data concern SPOT Panchromatic hardcopy. 
Fig. 3 is a part of SPOT P orthoimage of the study area. 
Drainage network, forests and roads are detected. 
Fig. 4 is a part of land use classification in 4 classes: forests, 
built-up areas, open areas and sea water.