Preliminary evaluation of ERS-1 data for studies on the Brazilian Pantanal

Detalhes bibliográficos
Autor(a) principal: Bignelli, Pedro Alberto
Data de Publicação: 1998
Outros Autores: Abdon, Myrian de Moura, Palme, Ulf Walter, Silva, João dos Santos Vila da
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/5051
Resumo: According to research results it is widely accepted that radar data present strong contrasts between land and water bodies, and it is especially suited to areas with significant cloud cover. In this context, the Pantanal environment (Mato Grosso do Sul State) was chosen to evaluate the potential and contribution of radar data to the understanding and mapping of the dynamics of this area. Specific investigations were carried out on known testsites of the Embrapa-CPAP and INPE (Nhecolândia region) aiming at: 1) comparison of the performance of ERS-1 images in relation to TM-Landsat for mapping vegetation and the water-land boundary; and 2) evaluation of the integration of optical and radar data in generating thematic maps of tropical areas for vegetation mapping. The visual analysis of radar data allow excellent discrimination of areas with sandy soils, salt-lakes, and association of aquatic plants, and also, the integrated optical/radar products contribute to the correct identification of vegetation groups and of local geomorphological aspects.
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spelling Preliminary evaluation of ERS-1 data for studies on the Brazilian PantanalAvaliação preliminar de dados radar ERS-1 para estudos do Pantanal Brasileirovegetation; remote sensing; microwave sensorvegetação; sensoriamento remoto; sensor de microondasAccording to research results it is widely accepted that radar data present strong contrasts between land and water bodies, and it is especially suited to areas with significant cloud cover. In this context, the Pantanal environment (Mato Grosso do Sul State) was chosen to evaluate the potential and contribution of radar data to the understanding and mapping of the dynamics of this area. Specific investigations were carried out on known testsites of the Embrapa-CPAP and INPE (Nhecolândia region) aiming at: 1) comparison of the performance of ERS-1 images in relation to TM-Landsat for mapping vegetation and the water-land boundary; and 2) evaluation of the integration of optical and radar data in generating thematic maps of tropical areas for vegetation mapping. The visual analysis of radar data allow excellent discrimination of areas with sandy soils, salt-lakes, and association of aquatic plants, and also, the integrated optical/radar products contribute to the correct identification of vegetation groups and of local geomorphological aspects.A pesquisa sobre sensores de microondas aponta o radar como excelente delimitador água/terra e também como uma nova ferramenta complementar para estudos de vegetação e culturas agrícolas, especialmente nas regiões do Planeta comumentemente recobertas por nebulosidade. Sendo assim, a região pantaneira do Mato Grosso do Sul constitui-se numa área teste ideal para avaliação de imageamentos de radar quanto ao potencial desta tecnologia na discriminação daqueles parâmetros. Assim, realizou-se um estudo piloto na sub-região de Nhecolândia, sobre a qual já estavam sendo conduzidos trabalhos de pesquisa pela Embrapa-CPAP em conjunto com o INPE, objetivando: 1) comparar o desempenho dos dados do radar ERS-1 em relação aos do TM-Landsat para o mapeamento da fisionomia da vegetação e a delimitação água/terra; e 2) analisar as contribuições do produto integrado daqueles sensores para o mapeamento da fisionomia vegetal e a geomorfologia da área-teste. Neste contexto, as análises visuais apontaram o radar como excelente discriminador das áreas com presença de solos arenosos, salinas e associações de plantas aquáticas; assim como os produtos híbridos apresentaram grande contribuição quanto à visualização da fisionomia dos grupos de vegetação e aos aspectos da geomorfologia local.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraBignelli, Pedro AlbertoAbdon, Myrian de MouraPalme, Ulf WalterSilva, João dos Santos Vila da1998-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5051Pesquisa Agropecuaria Brasileira; v.33, n. especial, out. 1998; 1691-1700Pesquisa Agropecuária Brasileira; v.33, n. especial, out. 1998; 1691-17001678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5051/7202info:eu-repo/semantics/openAccess2015-01-21T17:17:20Zoai:ojs.seer.sct.embrapa.br:article/5051Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2015-01-21T17:17:20Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Preliminary evaluation of ERS-1 data for studies on the Brazilian Pantanal
Avaliação preliminar de dados radar ERS-1 para estudos do Pantanal Brasileiro
title Preliminary evaluation of ERS-1 data for studies on the Brazilian Pantanal
spellingShingle Preliminary evaluation of ERS-1 data for studies on the Brazilian Pantanal
Bignelli, Pedro Alberto
vegetation; remote sensing; microwave sensor
vegetação; sensoriamento remoto; sensor de microondas
title_short Preliminary evaluation of ERS-1 data for studies on the Brazilian Pantanal
title_full Preliminary evaluation of ERS-1 data for studies on the Brazilian Pantanal
title_fullStr Preliminary evaluation of ERS-1 data for studies on the Brazilian Pantanal
title_full_unstemmed Preliminary evaluation of ERS-1 data for studies on the Brazilian Pantanal
title_sort Preliminary evaluation of ERS-1 data for studies on the Brazilian Pantanal
author Bignelli, Pedro Alberto
author_facet Bignelli, Pedro Alberto
Abdon, Myrian de Moura
Palme, Ulf Walter
Silva, João dos Santos Vila da
author_role author
author2 Abdon, Myrian de Moura
Palme, Ulf Walter
Silva, João dos Santos Vila da
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Bignelli, Pedro Alberto
Abdon, Myrian de Moura
Palme, Ulf Walter
Silva, João dos Santos Vila da
dc.subject.por.fl_str_mv vegetation; remote sensing; microwave sensor
vegetação; sensoriamento remoto; sensor de microondas
topic vegetation; remote sensing; microwave sensor
vegetação; sensoriamento remoto; sensor de microondas
description According to research results it is widely accepted that radar data present strong contrasts between land and water bodies, and it is especially suited to areas with significant cloud cover. In this context, the Pantanal environment (Mato Grosso do Sul State) was chosen to evaluate the potential and contribution of radar data to the understanding and mapping of the dynamics of this area. Specific investigations were carried out on known testsites of the Embrapa-CPAP and INPE (Nhecolândia region) aiming at: 1) comparison of the performance of ERS-1 images in relation to TM-Landsat for mapping vegetation and the water-land boundary; and 2) evaluation of the integration of optical and radar data in generating thematic maps of tropical areas for vegetation mapping. The visual analysis of radar data allow excellent discrimination of areas with sandy soils, salt-lakes, and association of aquatic plants, and also, the integrated optical/radar products contribute to the correct identification of vegetation groups and of local geomorphological aspects.
publishDate 1998
dc.date.none.fl_str_mv 1998-12-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/5051
url https://seer.sct.embrapa.br/index.php/pab/article/view/5051
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/5051/7202
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.33, n. especial, out. 1998; 1691-1700
Pesquisa Agropecuária Brasileira; v.33, n. especial, out. 1998; 1691-1700
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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