A methodological proposal for planation surfaces mapping
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.20502/rbg.v23i2.2094 http://hdl.handle.net/11449/242161 |
Resumo: | A mapping methodology of planation surfaces based on automated altimetric stratification is proposed in this work. In this methodology, mathematical concepts related to the variation of the function of pixels frequency vs. altitude are used to obtain the grouping of relief forms. The automatic clustering allows to distinguish the planation surfaces from elevation without the interference of decision maker. The input data for the execution of the mapping algorithm is the variation of elevation as a function of the number of pixels, extracted from SRTM data. The mapping of planation surfaces and the validation of computational algorithm were carried out for an area located in the municipality of Chapada Gaúcha, Minas Gerais State, Brazil, which presents two planation surfaces recognized in the literature. The landforms in the study area were associated with three planation cycles, interpreted as corresponding to King’s Post-Gondwana, South American and Velhas surfaces. Remaining (reserved) and dissected landforms from South American and Velhas surfaces were mapped, while for Post-Gondwana surface only dissected landforms were identified. The mapped surfaces showed an important correlation with the regional soil types, indicating that the spatial distribution of surficial formations is directly related to the distribution of the planation surfaces. The results showed that the proposed algorithm can automatically reveal the relief organization of a region, indicate characteristics of the planation surfaces such as the degree of flatness and leveling, in addition to helping to understand the relationship between landforms and soil distribution. The method is suitable for tectonically stable not-tilted reliefs and for areas of stepped planation surfaces. The method is suitable for stepped landsurfaces located at tectonically stable and not-tilted areas. |
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A methodological proposal for planation surfaces mappingUma proposta metodológica para o mapeamento de superfícies de aplanamentoClustering AlgorithmGeomorphometryPlanation Surfaces mappingA mapping methodology of planation surfaces based on automated altimetric stratification is proposed in this work. In this methodology, mathematical concepts related to the variation of the function of pixels frequency vs. altitude are used to obtain the grouping of relief forms. The automatic clustering allows to distinguish the planation surfaces from elevation without the interference of decision maker. The input data for the execution of the mapping algorithm is the variation of elevation as a function of the number of pixels, extracted from SRTM data. The mapping of planation surfaces and the validation of computational algorithm were carried out for an area located in the municipality of Chapada Gaúcha, Minas Gerais State, Brazil, which presents two planation surfaces recognized in the literature. The landforms in the study area were associated with three planation cycles, interpreted as corresponding to King’s Post-Gondwana, South American and Velhas surfaces. Remaining (reserved) and dissected landforms from South American and Velhas surfaces were mapped, while for Post-Gondwana surface only dissected landforms were identified. The mapped surfaces showed an important correlation with the regional soil types, indicating that the spatial distribution of surficial formations is directly related to the distribution of the planation surfaces. The results showed that the proposed algorithm can automatically reveal the relief organization of a region, indicate characteristics of the planation surfaces such as the degree of flatness and leveling, in addition to helping to understand the relationship between landforms and soil distribution. The method is suitable for tectonically stable not-tilted reliefs and for areas of stepped planation surfaces. The method is suitable for stepped landsurfaces located at tectonically stable and not-tilted areas.UNESP Desastres Naturais, Dos Campos-SPUFG Geografia, GOUNESP Desastres Naturais, Dos Campos-SPUniversidade Estadual Paulista (UNESP)GeografiaMantovani, José Roberto [UNESP]Bueno, Guilherme Taitson2023-03-02T10:44:02Z2023-03-02T10:44:02Z2022-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1456-1480http://dx.doi.org/10.20502/rbg.v23i2.2094Revista Brasileira de Geomorfologia, v. 23, n. 2, p. 1456-1480, 2022.2236-56641519-1540http://hdl.handle.net/11449/24216110.20502/rbg.v23i2.20942-s2.0-85136152908Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Geomorfologiainfo:eu-repo/semantics/openAccess2024-07-04T19:06:46Zoai:repositorio.unesp.br:11449/242161Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:41:53.771242Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A methodological proposal for planation surfaces mapping Uma proposta metodológica para o mapeamento de superfícies de aplanamento |
title |
A methodological proposal for planation surfaces mapping |
spellingShingle |
A methodological proposal for planation surfaces mapping Mantovani, José Roberto [UNESP] Clustering Algorithm Geomorphometry Planation Surfaces mapping |
title_short |
A methodological proposal for planation surfaces mapping |
title_full |
A methodological proposal for planation surfaces mapping |
title_fullStr |
A methodological proposal for planation surfaces mapping |
title_full_unstemmed |
A methodological proposal for planation surfaces mapping |
title_sort |
A methodological proposal for planation surfaces mapping |
author |
Mantovani, José Roberto [UNESP] |
author_facet |
Mantovani, José Roberto [UNESP] Bueno, Guilherme Taitson |
author_role |
author |
author2 |
Bueno, Guilherme Taitson |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Geografia |
dc.contributor.author.fl_str_mv |
Mantovani, José Roberto [UNESP] Bueno, Guilherme Taitson |
dc.subject.por.fl_str_mv |
Clustering Algorithm Geomorphometry Planation Surfaces mapping |
topic |
Clustering Algorithm Geomorphometry Planation Surfaces mapping |
description |
A mapping methodology of planation surfaces based on automated altimetric stratification is proposed in this work. In this methodology, mathematical concepts related to the variation of the function of pixels frequency vs. altitude are used to obtain the grouping of relief forms. The automatic clustering allows to distinguish the planation surfaces from elevation without the interference of decision maker. The input data for the execution of the mapping algorithm is the variation of elevation as a function of the number of pixels, extracted from SRTM data. The mapping of planation surfaces and the validation of computational algorithm were carried out for an area located in the municipality of Chapada Gaúcha, Minas Gerais State, Brazil, which presents two planation surfaces recognized in the literature. The landforms in the study area were associated with three planation cycles, interpreted as corresponding to King’s Post-Gondwana, South American and Velhas surfaces. Remaining (reserved) and dissected landforms from South American and Velhas surfaces were mapped, while for Post-Gondwana surface only dissected landforms were identified. The mapped surfaces showed an important correlation with the regional soil types, indicating that the spatial distribution of surficial formations is directly related to the distribution of the planation surfaces. The results showed that the proposed algorithm can automatically reveal the relief organization of a region, indicate characteristics of the planation surfaces such as the degree of flatness and leveling, in addition to helping to understand the relationship between landforms and soil distribution. The method is suitable for tectonically stable not-tilted reliefs and for areas of stepped planation surfaces. The method is suitable for stepped landsurfaces located at tectonically stable and not-tilted areas. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-01 2023-03-02T10:44:02Z 2023-03-02T10:44:02Z |
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/10.20502/rbg.v23i2.2094 Revista Brasileira de Geomorfologia, v. 23, n. 2, p. 1456-1480, 2022. 2236-5664 1519-1540 http://hdl.handle.net/11449/242161 10.20502/rbg.v23i2.2094 2-s2.0-85136152908 |
url |
http://dx.doi.org/10.20502/rbg.v23i2.2094 http://hdl.handle.net/11449/242161 |
identifier_str_mv |
Revista Brasileira de Geomorfologia, v. 23, n. 2, p. 1456-1480, 2022. 2236-5664 1519-1540 10.20502/rbg.v23i2.2094 2-s2.0-85136152908 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Geomorfologia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1456-1480 |
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 |
|
_version_ |
1808129348405821440 |