Comparación de Técnicas para el Mapeo de Cobertura Glaciar con Imágenes
LANDSAT y ASTER en la Cordillera Blanca, Ancash, Perú
Christian Vargas Gonzáles, Carmen Villon Reinoso, José Pasapera Gonzales
Comisión Nacional de Investigación y Desarrollo...
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Comparación de Técnicas para el Mapeo de Cobertura Glaciar con Imágenes
LANDSAT y ASTER en la Cordillera Blanca, Ancash, Perú
Christian Vargas Gonzáles, Carmen Villon Reinoso, José Pasapera Gonzales
Comisión Nacional de Investigación y Desarrollo Aeroespacial - CONIDA
Luis Felipe Villaran 1069 - San Isidro Lima – Perú
Abstract.
The study area is located at Ancash region - Peru, where target glaciers are part of the Cordillera
Blanca, the highest tropical cordillera on the world.
Two remote sensing mapping techniques were applied in
order to map glacier areas using both Thematic Mapper (LANDSAT) and Advanced Spaceborne Thermal
Emission and Reflectance (ASTER) images.
LANDSAT images used for this study was calibrated to
apparent reflectance while the ASTER image was used on radiance values as well as on apparent reflectance.
The two methods applied were the red – infrared band ratio and NDSI which allowed us to discriminate glacier,
lagoons and shadows areas.
Results
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