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| Registros recuperados : 26 | |
| Registros recuperados : 26 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
11/03/1999 |
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Data da última atualização: |
11/03/1999 |
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Autoria: |
CARVALHO JUNIOR, O. A. de; BAPTISTA, G. M. de M.; MADEIRA NETTO, J. da S.; MARTINS, E. de S.; CARVALHO, A. P. F.; MENESES, P. R. |
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Título: |
Utilizacao de dados hiperespectrais do sensor A VIRIS para identificacao da feicao espectral da ligacao magnesio-hidroxila em latericos niqueliferos. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
In: SIMPOSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 9., 1998, Santos, SP. Anais. Sao Jose dos Campos: INPE/MCT/SELPER, 1998. |
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Páginas: |
nao paginado. |
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Idioma: |
Português |
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Conteúdo: |
Laterites containing nickel and occurring in the Votorantim mine in Niquelandia, GO, were sampled for mineral composition and reflectance spectra determinations in the laboratory. A VIRIS data of the sampled area, after atmospheric correction and reduction of radiance to scaled surface reflectance, were also used, with the objective of determining the spatial occurrences of nickel bearing minerals. Besides ferric oxides, the lateric material were rich in pimelite a clay mineral of the montmorilonite group presenting Mg-OH. In the reflectance spectra the Mg-OH bond is clearly identified by a sharp feature centered at 2300 nm regardless of the iron oxides occurrence. This feature could also be identified in the A VIRIS data. A simple arithmetic operation with two bands of the Mg-OH feature was useful in the determination of the occurrences of the pimelite rich laterites. |
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Palavras-Chave: |
Brasil; Goias; Niquelandia. |
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Thesagro: |
Cerrado; Sensoriamento Remoto. |
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Thesaurus NAL: |
Brazil; remote sensing. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01783naa a2200277 a 4500
001 1544836
005 1999-03-11
008 1998 bl uuuu u00u1 u #d
100 1 $aCARVALHO JUNIOR, O. A. de
245 $aUtilizacao de dados hiperespectrais do sensor A VIRIS para identificacao da feicao espectral da ligacao magnesio-hidroxila em latericos niqueliferos.
260 $c1998
300 $anao paginado.
520 $aLaterites containing nickel and occurring in the Votorantim mine in Niquelandia, GO, were sampled for mineral composition and reflectance spectra determinations in the laboratory. A VIRIS data of the sampled area, after atmospheric correction and reduction of radiance to scaled surface reflectance, were also used, with the objective of determining the spatial occurrences of nickel bearing minerals. Besides ferric oxides, the lateric material were rich in pimelite a clay mineral of the montmorilonite group presenting Mg-OH. In the reflectance spectra the Mg-OH bond is clearly identified by a sharp feature centered at 2300 nm regardless of the iron oxides occurrence. This feature could also be identified in the A VIRIS data. A simple arithmetic operation with two bands of the Mg-OH feature was useful in the determination of the occurrences of the pimelite rich laterites.
650 $aBrazil
650 $aremote sensing
650 $aCerrado
650 $aSensoriamento Remoto
653 $aBrasil
653 $aGoias
653 $aNiquelandia
700 1 $aBAPTISTA, G. M. de M.
700 1 $aMADEIRA NETTO, J. da S.
700 1 $aMARTINS, E. de S.
700 1 $aCARVALHO, A. P. F.
700 1 $aMENESES, P. R.
773 $tIn: SIMPOSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 9., 1998, Santos, SP. Anais. Sao Jose dos Campos: INPE/MCT/SELPER, 1998.
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