Principal component analysis of airborne geophysical data for lithologic discrimination using an image analysis system
Abstract
The principal component transform is investigated as a technique for combining and displaying airborne gamma ray spectrometer and magnetic data. Three test sites are studied; 2 in the Appalachian Structural Province of Nova Scotia, Canada, and 1 in the Precambrian Shield in Northern Manitoba, Canada. Color composite imagery of the first three or four components are visually and statistically interpreted for lithologic information. The principal component transform was found to be an effective technique for integrating the geophysical data. Color composite imagery provided good color separation of lithologic units and in the case of the Nova Scotian test sites, offered additional lithologic information within individual intrusive granites.
- Publication:
-
Remote Sensing of Environment
- Pub Date:
- 1987
- Bibcode:
- 1987rse..conf..641H
- Keywords:
-
- Geological Surveys;
- Image Analysis;
- Lithology;
- Principal Components Analysis;
- Remote Sensing;
- Gamma Ray Spectrometers;
- Manitoba;
- Mineralogy;
- Nova Scotia;
- Geophysics