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ASTER Geological Processing

Overview
Orthorectified ASTER satellite scenes provide the foundation for PhotoSat’s suite of alteration and colour enhanced image products for gold, silver, copper, uranium, and nickel exploration projects. The best ASTER scenes are selected from a worldwide archive to provide alteration and geological information on your project area.

Products

• Colour Image
• Iron Oxide Alteration
• Hydroxyl Alteration: Intensity*
• Hydroxyl Alteration: Kaolinite** - Alunite ***
• Sericite Alteration
• Silica Alteration
• Vegetation Intensity
• Greyscale Image

Advanced Products

• Spectral Matching
• Lithological Enhancement

*** Minerals with an OH such as; Alunite, Sericite, Kaolinite, Dickite, Illite and Montmorillonite
*** Kaolinite or other minerals with an absorption peak at 2.16 microns
*** Alunite or other minerals with an absorption peak at 2.20 microns

COLOUR bands 2, 3, 1 click to view larger image

COLOUR bands 9, 3, 1 click to view larger image

IRON OXIDE ALTERATION with greyscale image click to view larger image

HYDROXYL ALTERATION: INTENSITY with greyscale image click to view larger image

HYDROXYL ALTERATION: KAOLINITE - ALUNITE with greyscale image click to view larger image

SERICITE ALTERATION with greyscale image click to view larger image

SILICA ALTERATION with greyscale image click to view larger image

VEGETATION click to view larger image

Advanced Processing: SPECTRAL MATCHING – match to the spectral signature of specified locations click to view larger image

Lithological Enhancement click to view larger image

Also Available

• ASTER Stereo Satellite Photos
• ASTER Multispectral Scenes

Product Specifications