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International Journal of Advanced Engineering, Management and Science


Lithological Discrimination of Anorthosite using ASTER data in Oddanchatram Area, Dindigul district, Tamil Nadu, India

( Vol-3,Issue-4,April 2017 )

Author(s): Gurugnanam. B, Arulbalaji. P, Midhuna. V, Kumaravel.S



Total View : 1217
Downloads : 164
Page No: 316-324
ijaems crossref doiDOI: 10.24001/ijaems.3.4.6

Keywords:

ASTER, remote sensing techniques, Oddanchatram, anorthosite.

Abstract:

The present study applies with hyperspectral remote sensing techniques to map the lithology of the Oddanchatram anorthosite. The hyperspectral data were subjected to Principal Component Analysis (PCA), Independent Component Analysis (ICA) and Minimum Noise Fraction (MNF), Pixel Purity Index (PPI) and n-Dimensional Visualization for better lithology mapping. The proposed study area has various typical rock types. The PCA, ICA and MNF have been proposed best band combination for effectiveness of lithological mapping such as PCA (R: G: B=2:1:3), MNF (R: G: B=4:3:2) and ICA (R: G: B=3:1:2). The derived lithological map has compared with published geological map from Geological Survey of India and validated with field investigation. Therefore, ASTER data based lithological mapping are fast, cost-effective and more accurate.

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