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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
04/05/1999 |
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Data da última atualização: |
04/05/1999 |
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Autoria: |
MADEIRA NETTO, J. da S.; POUGET, M.; BEDIDI, A.; CERVELLE, B. |
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Título: |
Informacoes quantitativas sobre a mineralogia dos latosolos a partir da reflectancia espectral no visivel e infravermelho proximo e medio (400 a 2500 nm). |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
In: SIMPOSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 7., 1993, Curitiba, PR. Anais. Sao Jose dos Campos: INPE, 1993. |
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Volume: |
v.3. |
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Páginas: |
p.249-255. |
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Idioma: |
Português |
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Conteúdo: |
Mineralogical and diffuse reflectance data from 56 soil samples were used to study relationships between spectral parameters and iron oxides (haematite and goethite), kaolinite and gibbsite contents in latosols. A colour index calculated from the Helmholtz coordinates, (dominant wavelength, saturation, and lightness) was found to be as good estimator ofr haematite contents as the IR(ICE), determined elsewhere. A good correlation was found between the dominant wavelength and the haematie/(haematite+goethite) ratio. The intensities of absorptions of kaolinite and gibbsite measured in their bands at 2205 nm and 2265 nm were also in good correlation with the concentrations of those mineral brought to the clay content of the samples. Finally, an index based on kaolinite and gibbsite intensities of absorption, was found to be a accurate estimator of the Ki value (SiO2/Al203 ratio). |
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Palavras-Chave: |
Refletancia. |
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Thesagro: |
Cerrado; Latossolo; Mineralogia; Solo. |
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Thesaurus Nal: |
Ferralsols; mineralogy; reflectance; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01754naa a2200289 a 4500
001 1545295
005 1999-05-04
008 1993 bl uuuu u00u1 u #d
100 1 $aMADEIRA NETTO, J. da S.
245 $aInformacoes quantitativas sobre a mineralogia dos latosolos a partir da reflectancia espectral no visivel e infravermelho proximo e medio (400 a 2500 nm).
260 $c1993
300 $ap.249-255. v.3.
490 $vv.3.
520 $aMineralogical and diffuse reflectance data from 56 soil samples were used to study relationships between spectral parameters and iron oxides (haematite and goethite), kaolinite and gibbsite contents in latosols. A colour index calculated from the Helmholtz coordinates, (dominant wavelength, saturation, and lightness) was found to be as good estimator ofr haematite contents as the IR(ICE), determined elsewhere. A good correlation was found between the dominant wavelength and the haematie/(haematite+goethite) ratio. The intensities of absorptions of kaolinite and gibbsite measured in their bands at 2205 nm and 2265 nm were also in good correlation with the concentrations of those mineral brought to the clay content of the samples. Finally, an index based on kaolinite and gibbsite intensities of absorption, was found to be a accurate estimator of the Ki value (SiO2/Al203 ratio).
650 $aFerralsols
650 $amineralogy
650 $areflectance
650 $asoil
650 $aCerrado
650 $aLatossolo
650 $aMineralogia
650 $aSolo
653 $aRefletancia
700 1 $aPOUGET, M.
700 1 $aBEDIDI, A.
700 1 $aCERVELLE, B.
773 $tIn: SIMPOSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 7., 1993, Curitiba, PR. Anais. Sao Jose dos Campos: INPE, 1993.
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Embrapa Cerrados (CPAC) |
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| Registros recuperados : 6 | |
| 2. |  | MADEIRA, J.; BEDIDI, A.; CERVELLE, B.; POUGET, M.; FLAY, N. Visible spectrometric indices of hematite (Hm) and goethite (Gt) content in lateritic soils: the application of a Thematic Mapper (Tm) image for soil-mapping in Brasilia, Brazil. International Journal of Remote Sensing, Hants, v.18, n.13, p.2835-2852 , 1997.| Biblioteca(s): Embrapa Cerrados. |
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| 3. | | BEDIDI, A.; CERVELLE, B.; MADEIRA, J.; POUGET, M. Relation entre la courbe de retraction hydrique de sols lateritiques et leurs caracteristiques spectrales (VIS) "proprietes spectrales des sols, du visible a l'infrarouge moyen". In: JOURNEES DE TELEDETECTION, 2, 1990, Bondy, France. Caracterisation et suivi des milieux terrestres en regions arides et tropicales. Paris, France: ORSTOM, 1991. p.3-19.| Biblioteca(s): Embrapa Cerrados. |
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| 4. | | MADEIRA, J.; POUGET, M.; BEDIDI, A.; CERVELLE, B. Relations entre les constituants mineraux d'oxisols bresiliens et leurs signatures spectrales du visible a l'infra-rouge moyen: application a des donnees satellitaires (Landsat TM). I. Les oxydes de fer. II. La kaolinite et la gibbsite, implications sur la texture. In: JOURNEES DE TELEDETECTION, 2, 1990, Bondy, France. Caracterisation et suivi des milieux terrestres en regions arides et tropicales. Paris, France: ORSTOM, 1991. p.21-25.| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 6 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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