Mineral imaging with Landsat Thematic Mapper data for hydrothermal alteration mapping in heavily vegetated terrane

摘要: A mineral imaging methodology, which involves processing of Landsat Thematic Mapper (TM) images and integration ground data, is tested in the Baguio district Philippines to map hydrothermally altered zones heavily vegetated terranes. Based on published reflectance spectra, two band ratio are created input into principal components analysis each predominant hydrothermal alteration separate images. Digitized data known used for identifying training pixels zones. The a supervised classification zones; accuracy reaches 69%. Inclusion an image digital elevation model improves 82%. methodology proved more successful remote mapping than limonitic clay alterati...