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The combined use of reflectance, emissivity and elevation Aster/Terra data for tropical soil studies Rev. Bras. Ciênc. Solo
Breunig,Fábio Marcelo; Galvão,Lênio Soares; Formaggio,Antonio Roberto; Couto,Eduardo Guimarães.
Reflectance, emissivity and elevation data of the sensor ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer)/Terra were used to characterize soil composition variations according to the toposequence position. Normalized data of SWIR (shortwave infrared) reflectance and TIR (thermal infrared) emissivity, coupled to a soil-fraction image from a spectral mixture model, were evaluated to separate bare soils from nonphotosynthetic vegetation. Regression relationships of some soil properties with reflectance and emissivity data were then applied on the exposed soil pixels. The resulting estimated values were plotted on the ASTER-derived digital elevation model. Results showed that the SWIR bands 5 and 6 and the TIR bands 10 and 14 measured the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digital elevation model; Soil constituents; Remote sensing; Topography.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000600027
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