Full text: Actes du Symposium International de la Commission VII de la Société Internationale de Photogrammétrie et Télédétection (Volume 1)

  
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WEST ANDEAN RANGE — 
    
  
  
  
FIG. la. Location of EL Tatio 
geothermal field, North of Chile. 
.4-0.,5 um), 
infrared 
aics (B/W) 
sites € 
certain 
ocks. Pho- 
nd photo- 
ared with 
l scale 
  
  
  
th a therm 
tion or 
oximately. 
he thermal 
re used 
ermal i- 
density 
esented 
ily iden- 
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tratigra- 
: FIG. lb. Geothermal activity 
prings : E ; 
among at El Tatio, in the morning 
1 features hours (geyseres). 
xcellent 
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ast was 
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ysthematz 
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s Range. 
c hours, 
  
  
PHOTO 1. Spectral bands AMB-1 and AMB-4 of mul- 
tiband camera, over an area in El Tatio geotherm 
al field. These bands were: AMB-1 or blue (0.4- 
| sensors, 0,5 um), AMB-2 or green(0.5-0.6 um),AMB-3 or red 
(explora- ; o (0.6-0.7 um) and AMB-4 or near infrared(0.7-0.9). 
fy th 
i PHOTO 2. Thermal image,over a sector 
at El Tatio. White tones are associated 
with high temperatures. 
  
  
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