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Proceedings Paper

Geologic mapping in Victoria Land, Antarctica, based on multispectral satellite data
Author(s): Ruggero Casacchia; Rosamaria Salvatori; A. Petrangeli
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Paper Abstract

Image processing techniques have been applied to Landsat TM images of Antarctica to enhance both the spectral contrast and the spatial information. The test site is located west of the Terra Nova Bay area, south of the terminal part of the Priestly Glacier and includes mountainous ranges characterized by alpine morphology, a large plateau and valley glaciers. Rock units are mainly constituted by a metamorphic complex, granitoids and supraglacial morains. A method based on principal component transform and on high-pass convolution filtering has allowed us to produce an image map where the spectral and the spatial information of the different surface units were combined. The detection of outcrop boundaries has been improved as well as the visual interpretation of their morphologic features. In general rock units correspond to those mapped by means of geological field survey. Morainic deposits are well discernable from the 'in situ' material appearing different, after processing, in texture and color from the intrusives and metamorphic complexes.

Paper Details

Date Published: 17 November 1995
PDF: 8 pages
Proc. SPIE 2587, Geographic Information Systems, Photogrammetry, and Geological/Geophysical Remote Sensing, (17 November 1995); doi: 10.1117/12.226805
Show Author Affiliations
Ruggero Casacchia, CNR (Italy)
Rosamaria Salvatori, CNR (Italy)
A. Petrangeli, CNR (Italy)

Published in SPIE Proceedings Vol. 2587:
Geographic Information Systems, Photogrammetry, and Geological/Geophysical Remote Sensing
Joan B. Lurie; James J. Pearson; Eugenio Zilioli, Editor(s)

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