Geologic and alteration mapping at Mt fitton, South Australia, using ASTER satellite-borne data

R. D. Hewson*, T. J. Cudahy, J. F. Huntington

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

41 Citations (Scopus)

Abstract

The Japanese ASTER sensor on board the US Terra satellite was launched in December 1999 to establish a space-borne capability for high spatial, multispectral visible-shortwave infrared and thermal infrared remote sensing data mapping of the Earth's environment. The Mt Fitton test site in South Australia was chosen to test the ability of the ASTER intrument for geological mapping having been previously surveyed by several visible-shortwave IR and thermal IR airborne remote sensing instruments and several field campaigns collecting relevant spectral measurements. These previous airborne remote sensing surveys and field campaigns successfully mapped a suite of intrusives and sedimentary units with some greenschist metamorphic and localised hydrothermal alteration. Visible-NIR ASTER channels successfully mapped green vegetation and iron oxide information. ASTER SWIR data was spectrally unmixed into four spectrally recognizable endmembers that relate to areas rich in talc, chlorite, white mica and carbonate mineralogies. This result was confirmed using IRIS field spectra resampled to ASTER resolution wavelengths. Quartz, carbonate and talc-tremolite rich units at Mt Fitton were also discriminated using ASTER's thermal infrared data. These results from low level ASTER data products indicated that ASTER could discriminate mineral groups not achievable from Landsat TM, though more precise mineral species mapping is not possible.

Original languageEnglish
Title of host publicationIGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium
PublisherIEEE
Pages724-726
Number of pages3
ISBN (Print)0-7803-7031-7
DOIs
Publication statusPublished - 1 Dec 2001
Externally publishedYes
EventIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2001: Scanning the Present and Resolving the Future - Sydney, Australia
Duration: 9 Jul 200113 Jul 2001

Conference

ConferenceIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2001
Abbreviated titleIGARSS 2001
CountryAustralia
CitySydney
Period9/07/0113/07/01

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