Remote sensing and geology in the Bojuru region, middle portion of the Coastal Plain of Rio Grande do Sul State, Brazil: Boundaries of the Pleistocene and Holocene barriers and the forms of land use.

In the locality of Bojuru, the middle portion of Rio Grande do Sul coastal plain (Southern Brazil) the research was carried out with the purpose of a better understanding the geology, geomorphology, recognition of the sedimentary facies of this coastal area, and ways of land use and occupation. This...

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Autores: Hansen, Marco Antonio Fontoura, Lima, José Pedro Rebés, Weschenfelder, Jair, Gruber, Nelson Luis Sambaqui, Moreira, Cesar Augusto
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:Brasil
Recursos:Associação Brasileira de Estudos do Quaternário (ABEQUA)
Repositorio:Quaternary and Environmental Geosciences
Idioma:inglés
OAI Identifier:oai:ojs.pkp.sfu.ca:article/73379
Acesso em linha:https://revistas.ufpr.br/abequa/article/view/73379
Access Level:acceso abierto
Palavra-chave:remote sensing
coastal plain
morphostratigraphy
coastal evolution
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spelling Remote sensing and geology in the Bojuru region, middle portion of the Coastal Plain of Rio Grande do Sul State, Brazil: Boundaries of the Pleistocene and Holocene barriers and the forms of land use.remote sensingcoastal plainmorphostratigraphycoastal evolutionIn the locality of Bojuru, the middle portion of Rio Grande do Sul coastal plain (Southern Brazil) the research was carried out with the purpose of a better understanding the geology, geomorphology, recognition of the sedimentary facies of this coastal area, and ways of land use and occupation. This region has active coastal sedimentation, with several occurrences and research for heavy minerals, mainly ilmenite (FeTiO3). For the stage of digital processing of satellite images, generation of databases, and crossing of information, the software SPRING 5.2.7-INPE, was used. The objective of this study aimed to verify how coastal sedimentary environments, due to their morphology and associated facies, directly or indirectly influence land use and occupation of the locality of Bojuru, on the middle coast of Rio Grande do Sul State. The techniques used in the digital image processing of the 1 MSS, 2 MSS, 7 ETM+, and three 8 OLI Landsat satellites, orbit 221/82, with their passage years being 1973, 1980, 2002, 2016, and 2019. The result of this processing with the field truths resulted in the delimitation of the main features related to coastal evolution, based on the spectral combination of the bands 742-RGB of the Landsat 8 OLI of 2019. In this way, it was possible to delimit the features of the Pleistocene, Lagoon, and Holocene barriers in the evolution of coastal and sedimentation dynamics. The highlights made, in the false color, were through the arrangement of the bands 543-RGB on the satellite image which favored the identification of the forms of land use and occupation and highlighted the morphostratigraphic changes of the Pleistocene and Holocene barriers deposits. Therefore, the greatest contrast was observed between the emerged and submerged portion, highlighting the sand/sea limit, the limit between the Pleistocene and Holocene barriers. The forms of use and occupation were also highlighted, enhancing the vegetation on the dunes and cultivation areas, with a loss of 61.2% in the dune area in 46 years.UFPR2021-12-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistas.ufpr.br/abequa/article/view/7337910.5380/abequa.v12i2.73379Quaternary and Environmental Geosciences; Vol. 12 No. 2 (2021)Quaternary and Environmental Geosciences; v. 12 n. 2 (2021)2176-614210.5380/abequa.v12i2reponame:Quaternary and Environmental Geosciencesinstname:Associação Brasileira de Estudos do Quaternário (ABEQUA)instacron:ABEQUAenghttps://revistas.ufpr.br/abequa/article/view/73379/46470Copyright (c) 2022 Quaternary and Environmental Geosciencesinfo:eu-repo/semantics/openAccessHansen, Marco Antonio FontouraLima, José Pedro RebésWeschenfelder, JairGruber, Nelson Luis SambaquiMoreira, Cesar Augusto2022-05-30T20:54:56Zoai:ojs.pkp.sfu.ca:article/73379Revistahttps://revistas.ufpr.br/abequa/ONGhttps://revistas.ufpr.br/abequa/oaicarlos.guedes@ufpr.br2176-61422176-6142opendoar:2022-05-30T20:54:56Quaternary and Environmental Geosciences - Associação Brasileira de Estudos do Quaternário (ABEQUA)false
dc.title.none.fl_str_mv Remote sensing and geology in the Bojuru region, middle portion of the Coastal Plain of Rio Grande do Sul State, Brazil: Boundaries of the Pleistocene and Holocene barriers and the forms of land use.
title Remote sensing and geology in the Bojuru region, middle portion of the Coastal Plain of Rio Grande do Sul State, Brazil: Boundaries of the Pleistocene and Holocene barriers and the forms of land use.
spellingShingle Remote sensing and geology in the Bojuru region, middle portion of the Coastal Plain of Rio Grande do Sul State, Brazil: Boundaries of the Pleistocene and Holocene barriers and the forms of land use.
Hansen, Marco Antonio Fontoura
remote sensing
coastal plain
morphostratigraphy
coastal evolution
title_short Remote sensing and geology in the Bojuru region, middle portion of the Coastal Plain of Rio Grande do Sul State, Brazil: Boundaries of the Pleistocene and Holocene barriers and the forms of land use.
title_full Remote sensing and geology in the Bojuru region, middle portion of the Coastal Plain of Rio Grande do Sul State, Brazil: Boundaries of the Pleistocene and Holocene barriers and the forms of land use.
title_fullStr Remote sensing and geology in the Bojuru region, middle portion of the Coastal Plain of Rio Grande do Sul State, Brazil: Boundaries of the Pleistocene and Holocene barriers and the forms of land use.
title_full_unstemmed Remote sensing and geology in the Bojuru region, middle portion of the Coastal Plain of Rio Grande do Sul State, Brazil: Boundaries of the Pleistocene and Holocene barriers and the forms of land use.
title_sort Remote sensing and geology in the Bojuru region, middle portion of the Coastal Plain of Rio Grande do Sul State, Brazil: Boundaries of the Pleistocene and Holocene barriers and the forms of land use.
dc.creator.none.fl_str_mv Hansen, Marco Antonio Fontoura
Lima, José Pedro Rebés
Weschenfelder, Jair
Gruber, Nelson Luis Sambaqui
Moreira, Cesar Augusto
author Hansen, Marco Antonio Fontoura
author_facet Hansen, Marco Antonio Fontoura
Lima, José Pedro Rebés
Weschenfelder, Jair
Gruber, Nelson Luis Sambaqui
Moreira, Cesar Augusto
author_role author
author2 Lima, José Pedro Rebés
Weschenfelder, Jair
Gruber, Nelson Luis Sambaqui
Moreira, Cesar Augusto
author2_role author
author
author
author
dc.subject.por.fl_str_mv remote sensing
coastal plain
morphostratigraphy
coastal evolution
topic remote sensing
coastal plain
morphostratigraphy
coastal evolution
description In the locality of Bojuru, the middle portion of Rio Grande do Sul coastal plain (Southern Brazil) the research was carried out with the purpose of a better understanding the geology, geomorphology, recognition of the sedimentary facies of this coastal area, and ways of land use and occupation. This region has active coastal sedimentation, with several occurrences and research for heavy minerals, mainly ilmenite (FeTiO3). For the stage of digital processing of satellite images, generation of databases, and crossing of information, the software SPRING 5.2.7-INPE, was used. The objective of this study aimed to verify how coastal sedimentary environments, due to their morphology and associated facies, directly or indirectly influence land use and occupation of the locality of Bojuru, on the middle coast of Rio Grande do Sul State. The techniques used in the digital image processing of the 1 MSS, 2 MSS, 7 ETM+, and three 8 OLI Landsat satellites, orbit 221/82, with their passage years being 1973, 1980, 2002, 2016, and 2019. The result of this processing with the field truths resulted in the delimitation of the main features related to coastal evolution, based on the spectral combination of the bands 742-RGB of the Landsat 8 OLI of 2019. In this way, it was possible to delimit the features of the Pleistocene, Lagoon, and Holocene barriers in the evolution of coastal and sedimentation dynamics. The highlights made, in the false color, were through the arrangement of the bands 543-RGB on the satellite image which favored the identification of the forms of land use and occupation and highlighted the morphostratigraphic changes of the Pleistocene and Holocene barriers deposits. Therefore, the greatest contrast was observed between the emerged and submerged portion, highlighting the sand/sea limit, the limit between the Pleistocene and Holocene barriers. The forms of use and occupation were also highlighted, enhancing the vegetation on the dunes and cultivation areas, with a loss of 61.2% in the dune area in 46 years.
publishDate 2021
dc.date.none.fl_str_mv 2021-12-30
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://revistas.ufpr.br/abequa/article/view/73379
10.5380/abequa.v12i2.73379
url https://revistas.ufpr.br/abequa/article/view/73379
identifier_str_mv 10.5380/abequa.v12i2.73379
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistas.ufpr.br/abequa/article/view/73379/46470
dc.rights.driver.fl_str_mv Copyright (c) 2022 Quaternary and Environmental Geosciences
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2022 Quaternary and Environmental Geosciences
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UFPR
publisher.none.fl_str_mv UFPR
dc.source.none.fl_str_mv Quaternary and Environmental Geosciences; Vol. 12 No. 2 (2021)
Quaternary and Environmental Geosciences; v. 12 n. 2 (2021)
2176-6142
10.5380/abequa.v12i2
reponame:Quaternary and Environmental Geosciences
instname:Associação Brasileira de Estudos do Quaternário (ABEQUA)
instacron:ABEQUA
instname_str Associação Brasileira de Estudos do Quaternário (ABEQUA)
instacron_str ABEQUA
institution ABEQUA
reponame_str Quaternary and Environmental Geosciences
collection Quaternary and Environmental Geosciences
repository.name.fl_str_mv Quaternary and Environmental Geosciences - Associação Brasileira de Estudos do Quaternário (ABEQUA)
repository.mail.fl_str_mv carlos.guedes@ufpr.br
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score 15,301629

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