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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Estimating total suspended matter using the particle backscattering coefficient: results from the Itumbiara hydroelectric reservoir (Goias State, Brazil)

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Autor(es):
Alcantara, Enner ; Curtarelli, Marcelo ; Stech, Jose
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: REMOTE SENSING LETTERS; v. 7, n. 4, p. 397-406, 2016.
Citações Web of Science: 2
Resumo

In this study, a quasi-analytical algorithm (QAA)-based model was parameterized using remote-sensing reflectance (R-rs, units in sr(-1)), total absorption coefficient (a(t)) and total suspended matter (TSM) concentration. The model was based on the particle backscattering at 561 nm (b(bp)(561)) and was derived from the QAA and TSM concentration. The aim of this work was to parameterize a QAA-based model to estimate the TSM concentration using the Landsat-8 Operational Land Imager (OLI) sensor in the Itumbiara hydroelectric reservoir, Brazil. The results demonstrated that the calibrated model, TSM = 0: 907 + 5.479 x b(bp)(561) + xi, had a coefficient of determination of R-2 = 0.70 and that the validation had an R-2 = 0.82, RMSE = 41.39% and a mean bias of 0.074 mg l(-1). The primary observation using the TSM and b(bp)(561) maps is that waters with lower b(bp)(561) values have lower TSM concentrations; there is a direct correlation between b(bp)(561) and TSM concentration. (AU)

Processo FAPESP: 08/57719-9 - Programa de Mudanças Climáticas - INCT CLIMA
Beneficiário:Carlos Afonso Nobre
Linha de fomento: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático
Processo FAPESP: 07/08103-2 - Estudo da circulação, qualidade da água e uso/ocupação do solo na bacia hidrográfica do Reservatório de Itumbiara
Beneficiário:José Luiz Stech
Linha de fomento: Auxílio à Pesquisa - Regular