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Evaluation of JERS-1 (FUYO-1) OPS and Landsat TM images for mapping of gneissic rocks in arid areas

De Souza Filho, C. R. and Drury, S. A. (1998). Evaluation of JERS-1 (FUYO-1) OPS and Landsat TM images for mapping of gneissic rocks in arid areas. International Journal of Remote Sensing, 19(18) pp. 3569–3594.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1080/014311698213821
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Abstract

Systematic defects in images produced by the JERS-1 Optical Sensor's short wave infrared (SWIR) channels have deterred wide geological applications of the global data that JERS-1 has gathered. Frequency-domain filtering to separate noise from scene-determined signals allows the advantages of the three JERS-1 SWIR channels, covering AI-OH, Mg-OH and C-O spectral features to be assessed in relation to the widely used Landsat Thematic Mapper (TM) data. For the arid, high-grade Barka Terrane in NW Eritrea, two data-optimizing methods permit consistent and comprehensive lithofacies discrimination. These are based on: (i) pairwise principal component analysis that employs groups of two channels oriented to hydroxyl, carbonate and ferric iron species' spectral features; (ii) selection of channels to display RGB images. Optimizing this approach is based on detailed analysis of local spectroradiometry. As a general mapping tool for high-grade rocks the Landsat TM outperforms the JERS-1 Optical Sensor (OPS). However, recovery of OPS channel 8 by frequency-domain filtering uniquely permits routine identification of marbles and, together with TM band 7, allows distinction between rock whose spectra are dominated by Al-OH-and MG-OH-bearing phyllosilicates.

Item Type: Journal Article
Copyright Holders: 1998 Taylor & Francis Ltd
ISSN: 1366-5901
Academic Unit/Department: Science > Environment, Earth and Ecosystems
Item ID: 25443
Depositing User: Stephen Drury
Date Deposited: 28 Apr 2011 08:21
Last Modified: 15 Nov 2011 10:02
URI: http://oro.open.ac.uk/id/eprint/25443
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