Detecção de cavidades EM arenitos utilizando gravimetria, eletrorresistividade e GPR

Detalhes bibliográficos
Autor(a) principal: Dourado, João C.
Data de Publicação: 2001
Outros Autores: Malagutti Filho, Walter, Braga, Antônio C. O., Nava, Noedir
Tipo de documento: Artigo
Idioma: por
eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/231002
Resumo: This paper shows the results of geophysical research in areas of sand exploration near the city of Descalvado, SP, Brazil. The main objective of this research is to detect cavities inside sandstones belonging to the Piramboia and Botucatu Formations in the Parana sedimentary basin. These cavities were indirectly caused by human activity, i.e., the lowering of the water table for the purpose of sand extraction. The geophysical techniques employed were: gravity, resistivity (dipole-dipole electrical profiling) and ground penetrating radar (GPR). In the first stage of the work gravity and resistivity surveys were used to indicate where exists voids due to the collapse of the roof of a cavity. The results obtained with these two techniques were coherent because the gravity showed a mass absence in the area of influence of the cavity and the dipole-dipole electrical profiling detected an increase of electric resistivity in this same area. In the second stage, the GPR survey detected the same cavities by means of the hyperbolic features that appear in the radargrams.
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spelling Detecção de cavidades EM arenitos utilizando gravimetria, eletrorresistividade e GPRDetection of cavities in sandstone using gravity, resistivity and GPR methodsApplied geophysicsDetection of cavitiesGravityGround penetrating radarResistivityThis paper shows the results of geophysical research in areas of sand exploration near the city of Descalvado, SP, Brazil. The main objective of this research is to detect cavities inside sandstones belonging to the Piramboia and Botucatu Formations in the Parana sedimentary basin. These cavities were indirectly caused by human activity, i.e., the lowering of the water table for the purpose of sand extraction. The geophysical techniques employed were: gravity, resistivity (dipole-dipole electrical profiling) and ground penetrating radar (GPR). In the first stage of the work gravity and resistivity surveys were used to indicate where exists voids due to the collapse of the roof of a cavity. The results obtained with these two techniques were coherent because the gravity showed a mass absence in the area of influence of the cavity and the dipole-dipole electrical profiling detected an increase of electric resistivity in this same area. In the second stage, the GPR survey detected the same cavities by means of the hyperbolic features that appear in the radargrams.Departamento de Geologia Aplicada IGCE Campus de Rio Claro, Rio Claro - SPMineração Jundu S. A., Descalvado - SPIGCEMineração Jundu S. A.Dourado, João C.Malagutti Filho, WalterBraga, Antônio C. O.Nava, Noedir2022-04-29T08:43:11Z2022-04-29T08:43:11Z2001-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article19-32Revista Brasileira de Geofisica, v. 19, n. 1, p. 19-32, 2001.0102-261Xhttp://hdl.handle.net/11449/2310022-s2.0-30544434342Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporengRevista Brasileira de Geofisicainfo:eu-repo/semantics/openAccess2022-04-29T08:43:11Zoai:repositorio.unesp.br:11449/231002Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:02:42.682381Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Detecção de cavidades EM arenitos utilizando gravimetria, eletrorresistividade e GPR
Detection of cavities in sandstone using gravity, resistivity and GPR methods
title Detecção de cavidades EM arenitos utilizando gravimetria, eletrorresistividade e GPR
spellingShingle Detecção de cavidades EM arenitos utilizando gravimetria, eletrorresistividade e GPR
Dourado, João C.
Applied geophysics
Detection of cavities
Gravity
Ground penetrating radar
Resistivity
title_short Detecção de cavidades EM arenitos utilizando gravimetria, eletrorresistividade e GPR
title_full Detecção de cavidades EM arenitos utilizando gravimetria, eletrorresistividade e GPR
title_fullStr Detecção de cavidades EM arenitos utilizando gravimetria, eletrorresistividade e GPR
title_full_unstemmed Detecção de cavidades EM arenitos utilizando gravimetria, eletrorresistividade e GPR
title_sort Detecção de cavidades EM arenitos utilizando gravimetria, eletrorresistividade e GPR
author Dourado, João C.
author_facet Dourado, João C.
Malagutti Filho, Walter
Braga, Antônio C. O.
Nava, Noedir
author_role author
author2 Malagutti Filho, Walter
Braga, Antônio C. O.
Nava, Noedir
author2_role author
author
author
dc.contributor.none.fl_str_mv IGCE
Mineração Jundu S. A.
dc.contributor.author.fl_str_mv Dourado, João C.
Malagutti Filho, Walter
Braga, Antônio C. O.
Nava, Noedir
dc.subject.por.fl_str_mv Applied geophysics
Detection of cavities
Gravity
Ground penetrating radar
Resistivity
topic Applied geophysics
Detection of cavities
Gravity
Ground penetrating radar
Resistivity
description This paper shows the results of geophysical research in areas of sand exploration near the city of Descalvado, SP, Brazil. The main objective of this research is to detect cavities inside sandstones belonging to the Piramboia and Botucatu Formations in the Parana sedimentary basin. These cavities were indirectly caused by human activity, i.e., the lowering of the water table for the purpose of sand extraction. The geophysical techniques employed were: gravity, resistivity (dipole-dipole electrical profiling) and ground penetrating radar (GPR). In the first stage of the work gravity and resistivity surveys were used to indicate where exists voids due to the collapse of the roof of a cavity. The results obtained with these two techniques were coherent because the gravity showed a mass absence in the area of influence of the cavity and the dipole-dipole electrical profiling detected an increase of electric resistivity in this same area. In the second stage, the GPR survey detected the same cavities by means of the hyperbolic features that appear in the radargrams.
publishDate 2001
dc.date.none.fl_str_mv 2001-12-01
2022-04-29T08:43:11Z
2022-04-29T08:43:11Z
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 Revista Brasileira de Geofisica, v. 19, n. 1, p. 19-32, 2001.
0102-261X
http://hdl.handle.net/11449/231002
2-s2.0-30544434342
identifier_str_mv Revista Brasileira de Geofisica, v. 19, n. 1, p. 19-32, 2001.
0102-261X
2-s2.0-30544434342
url http://hdl.handle.net/11449/231002
dc.language.iso.fl_str_mv por
eng
language por
eng
dc.relation.none.fl_str_mv Revista Brasileira de Geofisica
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 19-32
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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