| 1. Identificação | |
| Tipo de Referência | Artigo em Revista Científica (Journal Article) |
| Site | mtc-m12.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 6qtX3pFwXQZ3r59YD6/GPc9F |
| Repositório | sid.inpe.br/iris@1912/2005/07.20.06.26.40 (acesso restrito) |
| Última Atualização | 2007:10.10.19.26.10 (UTC) marciana |
| Repositório de Metadados | sid.inpe.br/iris@1912/2005/07.20.06.27 |
| Última Atualização dos Metadados | 2018:06.05.00.52.41 (UTC) administrator |
| Chave Secundária | INPE-5925-PRE/2068 |
| DOI | 10.1016/0034-4257(95)00040-8 |
| ISSN | 0034-4257 |
| Rótulo | 7314 |
| Chave de Citação | GalvãoVitoPara:1995:SpDiLa |
| Título | Spectroradiometric discrimination of laterites with principal components analysis and additive modeling  |
| Ano | 1995 |
| Mês | Aug. |
| Data de Acesso | 14 maio 2024 |
| Tipo de Trabalho | journal article |
| Tipo Secundário | PRE PI |
| Número de Arquivos | 1 |
| Tamanho | 620 KiB |
| 2. Contextualização | |
| Autor | 1 Galvão, Lenio Soares 2 Vitorello, Icaro 3 Paradella, Waldir Renato |
| Identificador de Curriculo | 1 2 8JMKD3MGP5W/3C9JHD6 3 8JMKD3MGP5W/3C9JJBT |
| Grupo | 1 DSR-INPE-MCT-BR 2 DSR-INPE-MCT-BR 3 DSR-INPE-MCT-BR |
| Revista | Remote Sensing of Environment |
| Volume | 53 |
| Número | 2 |
| Páginas | 70-75 |
| Histórico (UTC) | 2006-09-04 15:59:42 :: administrator -> jefferson :: 2007-10-10 19:26:11 :: jefferson -> administrator :: 2008-06-09 19:16:23 :: administrator -> jefferson :: 2010-07-07 18:52:00 :: jefferson -> marciana :: 2011-10-31 11:26:59 :: marciana -> administrator :: 1995 2016-06-04 23:29:33 :: administrator -> marciana :: 1995 2016-09-12 17:03:25 :: marciana -> administrator :: 1995 2018-06-05 00:52:41 :: administrator -> marciana :: 1995 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Tipo de Versão | publisher |
| Palavras-Chave | ferric phosphate mineral titanium additive modeling additive modelling laterite mineral exploration principal component analysis principal components analysis remote sensing spectral analysis Brazil infrared radiation model principal component analysis radiation detector rock spectroscopy spectrum Brazil Maicuru |
| Resumo | Bidirectional reflectance factor determinations in the visible and and near-infrared of mineralized laterite samples collected at the surface of the alkaline/ultramafic rockscarbonative complex of Maicuru, northern Brazil, were evaluated for iron, phosphate, and titanium content. Nineteen spectra were subjected to principal components analysis in order to get a better insight into the factors affecting spectral discrination. The spatial distribution in a PC1 vs. PC2 plot is related to the overall reflectance (albedo)along the PC1 axis and to the spectral inversion around 1100 nm along the PC2 axis. The latter can be characterized by any spectral ratio of reflectance values taken before and after the inversion wavelength. Two major groups were thus identified: titanium-rich (anatase, ilmenite)laterites and aluminum phosphate laterites. The former presented spectra with low to intermediate albedos and lower near-infrared/visible and very near-infrared reflectance ratio values. The phosphate-rich samples presented intermediate to high albedos and higher reflectance ratios. Titaniferous laterites have a greater content of opaques than the phosphates which are usually richer in iron oxides. The presence of titanium lowers the albedo whereas iron oxides absorb only in the visible and very near-infrared. Binary mixtures of Fe2 O3 and carbon provided spectral variations analogous to the ones observed in the titaniferous laterites. Such modeling helped in evaluating the effects of opaques. As a practical result, a band radiometer could conceivably identify the titanium mineralized areas in the field. |
| Área | SRE |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Spectroradiometric discrimination of... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| Idioma | en |
| Arquivo Alvo | sdarticle.pdf |
| Grupo de Usuários | administrator jefferson marciana |
| Grupo de Leitores | administrator marciana |
| Visibilidade | shown |
| Detentor da Cópia | SID/SCD |
| Política de Arquivamento | denypublisher allowfinaldraft24 |
| Permissão de Leitura | deny from all and allow from 150.163 |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
| Lista de Itens Citando | sid.inpe.br/mtc-m21/2012/07.13.14.50.10 1 |
| Divulgação | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
| Acervo Hospedeiro | sid.inpe.br/banon/2001/04.06.10.52 |
| 6. Notas | |
| Campos Vazios | affiliation alternatejournal archivist callnumber copyright creatorhistory descriptionlevel e-mailaddress electronicmailaddress format isbn lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |