Istanbul 2004 
d its caldera. 
on in the Late 
acial erosion 
)0 meters. In 
lcanic rocks 
et al; 1975; 
Kocyigit ve 
described by 
ohic analysis 
t elements in 
vations and 
and analysis 
TM. Image 
orphological 
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aspects of 
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oly synoptic 
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llite sensors 
on of the 
tromagnetic 
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applications 
ioglu et al., 
Mayer, L. 
cellis, 2000; 
his study. 
our lines of 
or of 0.3 
  
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004 
mm on the map generates a planimetric error of 10 m on the 
DTM which has also 10m vertical resolutions, respectively, and 
covers an area of about 3800 km2. 
Satellite data converts to Earth coordinate system (e.g. 
Universal Transverse Mercator System) from the spectral 
response values of the original image by using ground control 
points (GCP). GCP were generated from mostly topographic 
maps. According Welch and Usery (1984) maximum error must 
be less than half of pixel size in transformation of satellite 
(maximum error must be less than «15m. for Landsat ETM). 
For this purpose more than 40 GCP were selected from 
mountain. 
Image Processing (IP) software (ERDAS) were used to 
manipulate this data set. Image Drape was used to generate 
perspective view of mountain (Figure 3). 
  
      
Sp n 2 E 
Figure 3. Perspective view of Erciye 
EE EE 
s Stratovolcano Complex. 
4. CONCLUSION 
A DTM of Mt. Erciyes stratovolcano has been presented. Image 
Processing techniques used to construct digital terrain model of 
Mt. Erciyes. Geomorphologic map of study area produced by 
using remote sensing technologies, satellite data and DTM 
(Figure 4). 
  
  
  
  
  
  
  
  
  
  
Figure 4. Geomorphological Interpretation of Study Area from 
Landsat ETM 
Morphological units are described by image processing 
systems. Topographic analysis from maps and field studies 
improved by measure and analysis forms of terrain using by 
satellite data and DTM (Figure 2). Additionally topographic 
analysis from field observation are added map. Obviously seen 
that, this techniques opens new dimension on volcanology, 
mountain geomorphology and cartography. The analysis of 
slope distribution and aspect map derived by the DTM. 
Acknowledgement 
We thank to SAHARA HARITA-MUHENDISLIK who 
supplied founds for XXth Congress of ISPRS. 
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