The hard rock aquifer in semiarid: analysis of models based on geological-structural data and airborne and terrestrial geophysical methods
In a large area of NE Brazil, where the effects of the semi-arid climate and crystalline terrain overlap, hard rock aquifers are the only sources of water, especially in periods of prolonged drought. The traditional location of wells, based on geological-structural, geomorphological and remote senso...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2023 |
| País: | Brasil |
| Institución: | Associação Brasileira de Águas Subterrâneas |
| Repositorio: | Águas Subterrâneas (São Paulo. Online) |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.aguassubterraneas.abas.org:article/30197 |
| Acceso en línea: | https://aguassubterraneas.abas.org/asubterraneas/article/view/30197 |
| Access Level: | acceso abierto |
| Palabra clave: | Groundwater Hard rock aquifer Structural geology Airborne and terrestrial geophysics Semiarid. Água subterrânea Meio fissural Geologia estrutural Geofísicas aeroportada e terrestre Semiárido |
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oai:ojs.aguassubterraneas.abas.org:article/30197 |
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The hard rock aquifer in semiarid: analysis of models based on geological-structural data and airborne and terrestrial geophysical methodsO aquífero fissural no semiárido: análise de modelos com base em dados geológico-estruturais e métodos geofísicos aeroportados e terrestreGroundwaterHard rock aquiferStructural geologyAirborne and terrestrial geophysicsSemiarid.Água subterrâneaMeio fissuralGeologia estruturalGeofísicas aeroportada e terrestreSemiáridoIn a large area of NE Brazil, where the effects of the semi-arid climate and crystalline terrain overlap, hard rock aquifers are the only sources of water, especially in periods of prolonged drought. The traditional location of wells, based on geological-structural, geomorphological and remote sensor product analyses, involves high exploratory risk, resulting in about 30 to 40% of failure. This stems from the difficulty of assessing which are the dominant discontinuities (fracture or foliation), as well as which have higher hydrogeological potential. In this research, data from airborne (electromagnetic and magnetic) and terrestrial (geoelectric) geophysical surveys were integrated, in addition to structural analysis with a neotectonic bias. With the aim of improving the work of well locating, the results obtained demonstrate that the riacho-fenda and eluvial-alluvial trough models commonly coexist, allowing to outline their spatial distributions. In addition, it was possible to identify important geological and geophysical aspects to discriminate in the field which model effectively occurs. Em grande área do NE do Brasil, em que se superpõem os efeitos do clima semiárido e terrenos cristalinos, aquíferos fissurais são as únicas fontes de água, principalmente nos períodos de seca prolongada. A locação de poços tradicional, baseada nas análises geológico-estrutural, geomorfológica e de produtos de sensores remotos envolve alto risco exploratório, resultando em cerca de 30 a 40 % de insucesso. Isso decorre da dificuldade de avaliação sobre quais são as descontinuidades dominantes (fratura ou foliação), bem como quais apresentam potencialidades hidrogeológicas mais elevadas. Nesta pesquisa foram integrados dados de levantamentos geofísicos aeroportados (eletromagnético e magnético) e terrestre (geoelétrico), além da análise estrutural com viés neotectônico. Com fins ao aprimoramento no trabalho de locação de poços, os resultados obtidos demonstram que os modelos riacho-fenda e calha elúvio-aluvionar comumente coexistem, permitindo esboçar as suas distribuições espaciais. Além disso, foi possível identificar aspectos geológicos e geofísicos importantes para discriminar em campo qual modelo ocorre de forma efetiva. ABAS - Associação Brasileira de Águas Subterrâneas2023-05-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://aguassubterraneas.abas.org/asubterraneas/article/view/3019710.14295/ras.v37i2.30197Águas Subterrâneas; v. 37 n. 2 (2023): REVISTA ÁGUAS SUBTERRÂNEAS; e-301972179-97840101-7004reponame:Águas Subterrâneas (São Paulo. Online)instname:Associação Brasileira de Águas Subterrâneasinstacron:ABASporhttps://aguassubterraneas.abas.org/asubterraneas/article/view/30197/19481Copyright (c) 2023 Águas Subterrâneasinfo:eu-repo/semantics/openAccessNascimento da Silva, Carlos CésarMedeiros, Walter Eugênio deJardim de Sá, Emanuel FerrazLima, Maria da Guia2023-05-31T12:02:08Zoai:ojs.aguassubterraneas.abas.org:article/30197Revistahttps://aguassubterraneas.abas.org/asubterraneas/ONGhttps://aguassubterraneas.abas.org/asubterraneas/oaihidropaulo@gmail.com2179-97840101-7004opendoar:2023-05-31T12:02:08Águas Subterrâneas (São Paulo. Online) - Associação Brasileira de Águas Subterrâneasfalse |
| dc.title.none.fl_str_mv |
The hard rock aquifer in semiarid: analysis of models based on geological-structural data and airborne and terrestrial geophysical methods O aquífero fissural no semiárido: análise de modelos com base em dados geológico-estruturais e métodos geofísicos aeroportados e terrestre |
| title |
The hard rock aquifer in semiarid: analysis of models based on geological-structural data and airborne and terrestrial geophysical methods |
| spellingShingle |
The hard rock aquifer in semiarid: analysis of models based on geological-structural data and airborne and terrestrial geophysical methods Nascimento da Silva, Carlos César Groundwater Hard rock aquifer Structural geology Airborne and terrestrial geophysics Semiarid. Água subterrânea Meio fissural Geologia estrutural Geofísicas aeroportada e terrestre Semiárido |
| title_short |
The hard rock aquifer in semiarid: analysis of models based on geological-structural data and airborne and terrestrial geophysical methods |
| title_full |
The hard rock aquifer in semiarid: analysis of models based on geological-structural data and airborne and terrestrial geophysical methods |
| title_fullStr |
The hard rock aquifer in semiarid: analysis of models based on geological-structural data and airborne and terrestrial geophysical methods |
| title_full_unstemmed |
The hard rock aquifer in semiarid: analysis of models based on geological-structural data and airborne and terrestrial geophysical methods |
| title_sort |
The hard rock aquifer in semiarid: analysis of models based on geological-structural data and airborne and terrestrial geophysical methods |
| dc.creator.none.fl_str_mv |
Nascimento da Silva, Carlos César Medeiros, Walter Eugênio de Jardim de Sá, Emanuel Ferraz Lima, Maria da Guia |
| author |
Nascimento da Silva, Carlos César |
| author_facet |
Nascimento da Silva, Carlos César Medeiros, Walter Eugênio de Jardim de Sá, Emanuel Ferraz Lima, Maria da Guia |
| author_role |
author |
| author2 |
Medeiros, Walter Eugênio de Jardim de Sá, Emanuel Ferraz Lima, Maria da Guia |
| author2_role |
author author author |
| dc.subject.por.fl_str_mv |
Groundwater Hard rock aquifer Structural geology Airborne and terrestrial geophysics Semiarid. Água subterrânea Meio fissural Geologia estrutural Geofísicas aeroportada e terrestre Semiárido |
| topic |
Groundwater Hard rock aquifer Structural geology Airborne and terrestrial geophysics Semiarid. Água subterrânea Meio fissural Geologia estrutural Geofísicas aeroportada e terrestre Semiárido |
| description |
In a large area of NE Brazil, where the effects of the semi-arid climate and crystalline terrain overlap, hard rock aquifers are the only sources of water, especially in periods of prolonged drought. The traditional location of wells, based on geological-structural, geomorphological and remote sensor product analyses, involves high exploratory risk, resulting in about 30 to 40% of failure. This stems from the difficulty of assessing which are the dominant discontinuities (fracture or foliation), as well as which have higher hydrogeological potential. In this research, data from airborne (electromagnetic and magnetic) and terrestrial (geoelectric) geophysical surveys were integrated, in addition to structural analysis with a neotectonic bias. With the aim of improving the work of well locating, the results obtained demonstrate that the riacho-fenda and eluvial-alluvial trough models commonly coexist, allowing to outline their spatial distributions. In addition, it was possible to identify important geological and geophysical aspects to discriminate in the field which model effectively occurs. |
| publishDate |
2023 |
| dc.date.none.fl_str_mv |
2023-05-31 |
| 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://aguassubterraneas.abas.org/asubterraneas/article/view/30197 10.14295/ras.v37i2.30197 |
| url |
https://aguassubterraneas.abas.org/asubterraneas/article/view/30197 |
| identifier_str_mv |
10.14295/ras.v37i2.30197 |
| dc.language.iso.fl_str_mv |
por |
| language |
por |
| dc.relation.none.fl_str_mv |
https://aguassubterraneas.abas.org/asubterraneas/article/view/30197/19481 |
| dc.rights.driver.fl_str_mv |
Copyright (c) 2023 Águas Subterrâneas info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
Copyright (c) 2023 Águas Subterrâneas |
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openAccess |
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application/pdf |
| dc.publisher.none.fl_str_mv |
ABAS - Associação Brasileira de Águas Subterrâneas |
| publisher.none.fl_str_mv |
ABAS - Associação Brasileira de Águas Subterrâneas |
| dc.source.none.fl_str_mv |
Águas Subterrâneas; v. 37 n. 2 (2023): REVISTA ÁGUAS SUBTERRÂNEAS; e-30197 2179-9784 0101-7004 reponame:Águas Subterrâneas (São Paulo. Online) instname:Associação Brasileira de Águas Subterrâneas instacron:ABAS |
| instname_str |
Associação Brasileira de Águas Subterrâneas |
| instacron_str |
ABAS |
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ABAS |
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Águas Subterrâneas (São Paulo. Online) |
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Águas Subterrâneas (São Paulo. Online) |
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Águas Subterrâneas (São Paulo. Online) - Associação Brasileira de Águas Subterrâneas |
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hidropaulo@gmail.com |
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15,301629 |