Influence of slope shape on susceptibility to erosion in the Rio Claro watershed (Santa Rita do Passa Quatro, SP)
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.14393/rbcv71n1-2172 http://hdl.handle.net/11449/245849 |
Resumo: | Erosion, known as a phenomenon that causes serious consequences to the physical environment, has become a global concern and the focus of many studies in order to prevent or control its effects. The catchment area of Rio Claro, located in the northeastern part of the state of São Paulo, consists predominantly of unconsolidated sandy texture materials and comprises an area of 251.91km2. The aim of this work was to investigate the influence of slope shapes on the analysis of susceptibility to the accelerated erosion of this basin at a 1:50,000 scale, by comparing two methods: Analytical Hierarchical Process (AHP) Technique and Weighted Sum (WS). Intermediate and thematic cartograms were generated from a pre-existing database. The regions with slopes between 2 and 10% comprise 1.55km2 and are characterized as medium concave and convex hills, with the presence of unconsolidated materials corresponding mainly to the Quaternary and Tertiary Formations, where there is a predominance of large active erosions. The results show disseminated erosion processes in areas classified as low susceptibility and very low according to the two techniques. The concentration of the erosion processes is controlled by the shape of the slopes, particularly in the areas of medium hills with concave profiles, with sandy soil profiles and low compactness. In addition to the influence of sandy texture and low compactness of soils, concentration of erosive processes is mainly controlled slope shape. Major number of erosive processes occurs in concave divergent hills areas, while the highest densities of erosive processes are located in areas of convex divergent hills and, secondarily, in rectilinear divergent hills. |
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Influence of slope shape on susceptibility to erosion in the Rio Claro watershed (Santa Rita do Passa Quatro, SP)Influência da Forma das Encostas na Suscetibilidade à Erosão na Bacia Hidrográfica do Rio Claro (Santa Rita do Passa Quatro, SP)Hydrographic basinShape of slopesSusceptibility to erosionErosion, known as a phenomenon that causes serious consequences to the physical environment, has become a global concern and the focus of many studies in order to prevent or control its effects. The catchment area of Rio Claro, located in the northeastern part of the state of São Paulo, consists predominantly of unconsolidated sandy texture materials and comprises an area of 251.91km2. The aim of this work was to investigate the influence of slope shapes on the analysis of susceptibility to the accelerated erosion of this basin at a 1:50,000 scale, by comparing two methods: Analytical Hierarchical Process (AHP) Technique and Weighted Sum (WS). Intermediate and thematic cartograms were generated from a pre-existing database. The regions with slopes between 2 and 10% comprise 1.55km2 and are characterized as medium concave and convex hills, with the presence of unconsolidated materials corresponding mainly to the Quaternary and Tertiary Formations, where there is a predominance of large active erosions. The results show disseminated erosion processes in areas classified as low susceptibility and very low according to the two techniques. The concentration of the erosion processes is controlled by the shape of the slopes, particularly in the areas of medium hills with concave profiles, with sandy soil profiles and low compactness. In addition to the influence of sandy texture and low compactness of soils, concentration of erosive processes is mainly controlled slope shape. Major number of erosive processes occurs in concave divergent hills areas, while the highest densities of erosive processes are located in areas of convex divergent hills and, secondarily, in rectilinear divergent hills.Programa de Pós-Graduação em Engenharia Urbana Universidade Federal de São CarlosUniversidade Federal de São Carlos Departamento de Engenharia CivilUniversidade Estadual Paulista Júlio de Mesquita Filho na Faculdade de EngenhariaUniversidade Estadual Paulista Júlio de Mesquita Filho na Faculdade de EngenhariaUniversidade Federal de São Carlos (UFSCar)Universidade Estadual Paulista (UNESP)Basilio, Thamiris Cristina CostaFujimoto, Jaqueline TomiêLopes, ThiagoAsciutti, Gustavo Augusto MendonçaLorandi, Reinaldode Lollo, José Augusto [UNESP]2023-07-29T12:24:57Z2023-07-29T12:24:57Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article233-252http://dx.doi.org/10.14393/rbcv71n1-2172Revista Brasileira de Cartografia, v. 71, n. 1, p. 233-252, 2019.1808-09360560-4613http://hdl.handle.net/11449/24584910.14393/rbcv71n1-21722-s2.0-85101348095Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Brasileira de Cartografiainfo:eu-repo/semantics/openAccess2023-07-29T12:24:57Zoai:repositorio.unesp.br:11449/245849Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:35:45.075382Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of slope shape on susceptibility to erosion in the Rio Claro watershed (Santa Rita do Passa Quatro, SP) Influência da Forma das Encostas na Suscetibilidade à Erosão na Bacia Hidrográfica do Rio Claro (Santa Rita do Passa Quatro, SP) |
title |
Influence of slope shape on susceptibility to erosion in the Rio Claro watershed (Santa Rita do Passa Quatro, SP) |
spellingShingle |
Influence of slope shape on susceptibility to erosion in the Rio Claro watershed (Santa Rita do Passa Quatro, SP) Basilio, Thamiris Cristina Costa Hydrographic basin Shape of slopes Susceptibility to erosion |
title_short |
Influence of slope shape on susceptibility to erosion in the Rio Claro watershed (Santa Rita do Passa Quatro, SP) |
title_full |
Influence of slope shape on susceptibility to erosion in the Rio Claro watershed (Santa Rita do Passa Quatro, SP) |
title_fullStr |
Influence of slope shape on susceptibility to erosion in the Rio Claro watershed (Santa Rita do Passa Quatro, SP) |
title_full_unstemmed |
Influence of slope shape on susceptibility to erosion in the Rio Claro watershed (Santa Rita do Passa Quatro, SP) |
title_sort |
Influence of slope shape on susceptibility to erosion in the Rio Claro watershed (Santa Rita do Passa Quatro, SP) |
author |
Basilio, Thamiris Cristina Costa |
author_facet |
Basilio, Thamiris Cristina Costa Fujimoto, Jaqueline Tomiê Lopes, Thiago Asciutti, Gustavo Augusto Mendonça Lorandi, Reinaldo de Lollo, José Augusto [UNESP] |
author_role |
author |
author2 |
Fujimoto, Jaqueline Tomiê Lopes, Thiago Asciutti, Gustavo Augusto Mendonça Lorandi, Reinaldo de Lollo, José Augusto [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de São Carlos (UFSCar) Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Basilio, Thamiris Cristina Costa Fujimoto, Jaqueline Tomiê Lopes, Thiago Asciutti, Gustavo Augusto Mendonça Lorandi, Reinaldo de Lollo, José Augusto [UNESP] |
dc.subject.por.fl_str_mv |
Hydrographic basin Shape of slopes Susceptibility to erosion |
topic |
Hydrographic basin Shape of slopes Susceptibility to erosion |
description |
Erosion, known as a phenomenon that causes serious consequences to the physical environment, has become a global concern and the focus of many studies in order to prevent or control its effects. The catchment area of Rio Claro, located in the northeastern part of the state of São Paulo, consists predominantly of unconsolidated sandy texture materials and comprises an area of 251.91km2. The aim of this work was to investigate the influence of slope shapes on the analysis of susceptibility to the accelerated erosion of this basin at a 1:50,000 scale, by comparing two methods: Analytical Hierarchical Process (AHP) Technique and Weighted Sum (WS). Intermediate and thematic cartograms were generated from a pre-existing database. The regions with slopes between 2 and 10% comprise 1.55km2 and are characterized as medium concave and convex hills, with the presence of unconsolidated materials corresponding mainly to the Quaternary and Tertiary Formations, where there is a predominance of large active erosions. The results show disseminated erosion processes in areas classified as low susceptibility and very low according to the two techniques. The concentration of the erosion processes is controlled by the shape of the slopes, particularly in the areas of medium hills with concave profiles, with sandy soil profiles and low compactness. In addition to the influence of sandy texture and low compactness of soils, concentration of erosive processes is mainly controlled slope shape. Major number of erosive processes occurs in concave divergent hills areas, while the highest densities of erosive processes are located in areas of convex divergent hills and, secondarily, in rectilinear divergent hills. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2023-07-29T12:24:57Z 2023-07-29T12:24:57Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.14393/rbcv71n1-2172 Revista Brasileira de Cartografia, v. 71, n. 1, p. 233-252, 2019. 1808-0936 0560-4613 http://hdl.handle.net/11449/245849 10.14393/rbcv71n1-2172 2-s2.0-85101348095 |
url |
http://dx.doi.org/10.14393/rbcv71n1-2172 http://hdl.handle.net/11449/245849 |
identifier_str_mv |
Revista Brasileira de Cartografia, v. 71, n. 1, p. 233-252, 2019. 1808-0936 0560-4613 10.14393/rbcv71n1-2172 2-s2.0-85101348095 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Brasileira de Cartografia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
233-252 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129224110768128 |