Geologic mapping in Victoria Land, Antarctica, based on multispectral satellite data

Ruggero Casacchia; Rosamaria Salvatori; A. Petrangeli

doi:10.1117/12.226805

17 November 1995 Geologic mapping in Victoria Land, Antarctica, based on multispectral satellite data

Ruggero Casacchia, Rosamaria Salvatori, A. Petrangeli

Proceedings Volume 2587, Geographic Information Systems, Photogrammetry, and Geological/Geophysical Remote Sensing; (1995) https://doi.org/10.1117/12.226805
Event: Satellite Remote Sensing II, 1995, Paris, France

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.

Citation Download Citation

Ruggero Casacchia, Rosamaria Salvatori, and A. Petrangeli "Geologic mapping in Victoria Land, Antarctica, based on multispectral satellite data", Proc. SPIE 2587, Geographic Information Systems, Photogrammetry, and Geological/Geophysical Remote Sensing, (17 November 1995); https://doi.org/10.1117/12.226805

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