1997
DOI: 10.1016/s0034-4257(97)00068-0
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Mapping the iron oxide content of dune sands, Namib Sand Sea, Namibia, using landsat thematic mapper data

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Cited by 92 publications
(47 citation statements)
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“…Neossolos Quartizarênicos showed high values of reflectance intensity and an upward slope in the curves due to high sand content and the presence of quartz in this fraction (White et al, 1997) (Figure 4). Neossolos Quartzarênicos and sandy loam Latossolos (with clay content less than 250 g kg -1 ) had a similar spectral behavior.…”
Section: Resultsmentioning
confidence: 98%
See 1 more Smart Citation
“…Neossolos Quartizarênicos showed high values of reflectance intensity and an upward slope in the curves due to high sand content and the presence of quartz in this fraction (White et al, 1997) (Figure 4). Neossolos Quartzarênicos and sandy loam Latossolos (with clay content less than 250 g kg -1 ) had a similar spectral behavior.…”
Section: Resultsmentioning
confidence: 98%
“…The variation in intensity is due to a high variation in clay and different Fe 2 O 3 profiles. Horizons with higher sand content had higher intensities due to the high reflectance of quartz (White et al, 1997 The regions of Araraquara, São Carlos and Matão (SP) showed lower soil variability, with curves ranging from medium to low intensity. The variation of intensity was due to the greater or lesser presence of Fe 2 O 3 .…”
Section: Resultsmentioning
confidence: 99%
“…A partir de 1.100 nm, a reflectância desses dois componentes foi elevada e praticamente sem bandas de absorção (ROUSH et al, 1993;WHITE et al, 1997).…”
Section: óXidos De Ferro E Reflectânciaunclassified
“…descreveram que o quartzo apresentou alta intensidade de reflectância, enquanto Al-Abbas et al (1972) verificou que solos argilosos absorvem mais energia que os solos arenosos. Além disso, White et al (1997) verificaram os altíssimos valores de reflectância obtidos pelo quartzo, chegando a 80%, sem nenhum tipo de feição de absorção. Nesse caso, o Al foi o solo que apresentou os teores mais elevados de areia, cuja composição predominante é o quartzo, apresentando maior intensidade de reflectância (Fig.…”
Section: Alteração Das Características Dos Solos Ao Longo Da Topossequnclassified