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Rock-type discrimination by field, TM and SPOT data, Tarn Flat, Antarctica

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A lithologic investigation has been performed on the Tarn Flat area, Antarctica, based on Landsat-TM and SPOT-XS processed images and on radiometric field data acquired by an EXOTECH radiometer. Results from the field survey, performed during the austral summer 1994-95 expedition, were used to verify the ability of satellite images to discriminate between the main rock. Principal Component transformation allowed to enhance the spectral information of rocks, despite the high band correlation of TM data, while high-pass filtering and TM-SPOT merging allowed a fairly accurate detection of morphologic features. A supervised classification has been carried out on the processed satellite images as a further demonstration of the utility of remote observation to investigate extreme environments.
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Document Type: Research Article

Publication date: January 20, 1999

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