Thermal and near infrared remote sensing in the study of peat deposits on the Paraiba do Sul river flood plain (SP) / Sensoriamento remoto no termal e infravermelho proximo no estudo de depositos de turfa no Vale do Rio Paraiba do Sul (SP)

AUTOR(ES)
DATA DE PUBLICAÇÃO

1984

RESUMO

The purpose of this study was to evaluate the use of thermal and photographic remote sensing in the discrimination of peats with different organic matter and moisture contents, depth of occurrence, calorific value and thickness. To achieve this objective, the first step was to analyse the thermometric and radiometric temperatures obtained in the field and laboratory over peats from several regions.. This was followed by the analysis of radiometric temperature aerial profiles and color and black and white aerial photographs taken simultaneously over peat deposits on the Paraíba do Sul river floodplain near São José dos Campos (SP). The collected data were submitted to linear regression analyses and statistical tests. The results show that radiometric aerial temperatures are sensitive to some peat characteristics and vegetative cover changes. However, since vegetation and land use, in general, changed with differences in peat moisture and organic matter contents, a series of both quantitative and qualitative information of the deposits was obtained by thermal aerial data and infrared photographs analyses. In view of the fact that LANDSAT - TM images are obtained in the same spectral interval as that adopted in this study, and that there are other bands. useful in soil moisture and composition change detection, this study indicates the potentiality of TM images in studies related to the identification and evaluation of peat deposits.

ASSUNTO(S)

satelites landsat thermal mapping processamento de imagens rio paraiba do sul (sp)sao jose dos campos (sp) estudos integrados do meio ambiente aerial photography uso da terra processamento de imagens thematic mappers (landsat)soil moisture mapeador tematico (landsat) peat fotografia aerea flood plants turfa

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