NDLI: Spectral discrimination of lithologic facies in the granite of the pedra branca goias using landsat 1 digital imagery

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Spectral discrimination of lithologic facies in the granite of the pedra branca goias using landsat 1 digital imagery

Content Provider	NASA Technical Reports Server (NTRS)
Author	Parada, N. D. J. Almeido Jr., R.
Copyright Year	1982
Description	The applicability of LANDSAT MSS imagery for discriminating geobotanical associations observed in zones of cassiterite-rich metasomatic alterations in the granitic body of Serra da Pedra Branca was investigated. Computer compatible tapes of dry and rainy season imagery were analyzed. Image enlargement, corrections, linear contrast stretch, and ratioing of noncorrelated spectral bands were performed using the Image 100 with a grey scale of 256 levels between zero and 255. Only bands 5 and 7 were considered. Band ratioing of noncorrelated channels (5 and 7) of rainy season imagery permits distinction of areas with different vegetation coverage percentage, which corresponds to geobotanial associations in the area studied. The linear contrast stretch of channel 5, especially of the dry season image is very unsatisfactory in this area.
File Size	7175857
Page Count	15
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19830006307
Archival Resource Key	ark:/13960/t6935nw72
Language	English
Publisher Date	1982-05-01
Access Restriction	Open
Subject Keyword	Earth Resources And Remote Sensing Multispectral Band Scanners Geobotany Earth Resources Program Photogeology Satellite Observation Aerial Photography Digital Data Granite Thematic Mapping Lithology Computer Techniques Radar Geology Brazil Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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