Resumo
This study is based essentially on the pattern recognition of concentrations of suspended solids from LANDSAT-2 imagery recorded on CCT's and processed through the IMAGE-100 system. The June 24, 1976 passage over Guanabara Bay and outlying waters was classified using maximum-likelihood and cluster synthesis routines. The thematic map generated by the IMAGE-100 showed high consistency between the distribution of suspended solids and the bi-dimensional models of surface circulation, especially during high and low tides. Biological parameters obtained from the 1977 Environmental Control Program, State of Rio de Janeiro, correlated with orbital data corresponding to the spatial distribution of summer coliform counts. The same could have been deduced for the presence of inorganic dissolved phosphatesin the waters of Guanabara Bay given chemical data.
ARTIGOS
Método para classificação automática de padrões multiespectrais de imagens orbitais em águas costeiras
Renato HerzI; Keiko TanakaII
IInstituto Oceanográfico, Universidade de São Paulo, São Paulo, SP, Brasil
IIInstituto de Pesquisas Espaciais, São José dos Campos, SP, Brasil
SYNOPSIS
This study is based essentially on the pattern recognition of concentrations of suspended solids from LANDSAT-2 imagery recorded on CCT's and processed through the IMAGE-100 system. The June 24, 1976 passage over Guanabara Bay and outlying waters was classified using maximum-likelihood and cluster synthesis routines. The thematic map generated by the IMAGE-100 showed high consistency between the distribution of suspended solids and the bi-dimensional models of surface circulation, especially during high and low tides. Biological parameters obtained from the 1977 Environmental Control Program, State of Rio de Janeiro, correlated with orbital data corresponding to the spatial distribution of summer coliform counts. The same could have been deduced for the presence of inorganic dissolved phosphatesin the waters of Guanabara Bay given chemical data.
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Agradecimentos
Expresssamos nossos agradecimentos ao Instituto Oceanográfico da USP e Instituto de Pesquisas Espaciais, especialmente aos seus diretores Prof. Dr. André Ricciardi Cruz e Prof. Dr. Nelson de Jesus Parada, bem como ao Coordenador do Departamento de Sensoriamento Remoto, Dr. Cláudio Roland Sonnenburg e ao Chefe da Divisão de Desenvolvimento e Pesquisas em Aplicações, Dr. René Antonio Novaes, pelo apoio irrestrito recebido durante o Convênio "Proposição e Desenvolvimento do Projeto POLUE".
Aos colegas Ricardo Cartaxo Modesto de Souza, José Carlos Moreira, Luciano Vieira Dutra e Carlos Roberto de Souza, a nossa gratidão por sua dedicada colaboração nos trabalhos de processamento automático dos dados.
Bibliografia
- ENVIRONMENTAL CONTROL PROGRAMME IN THE STATE OF RIO DE JANEIRO. 1977. Water quality model of Guanabara bay. New Jersey, Hydroscience Inc.
- FEEMA. 1976. Modelos bidimensionais de qualidade de água e econômicos para a baía de Guanabara. Rio de Janeiro, 65p.
- GENERAL ELETRIC COMPANY, DAYTONA. 1975. Image-100 - Interactive multispectral image analysis system user manual.
- VELASCO, F.R.D.; PRADO, L.O.C. & SOUZA, R.C.M. 1978. Sistema MAXVER: manual do usário. INPE-1315-NTI/110, 72p.
Datas de Publicação
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Publicação nesta coleção
06 Jun 2012 -
Data do Fascículo
1980
