Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas Gerais

Teodoro, Maria Isabel Pereira; Velásquez, Leila Nunes Menegasse; Fleming, Peter Marshall; Paula, Rodrigo Sérgio; Souza, Rogério Tadeu; Doi, Bruno Mamoru

Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas Gerais

The study area is located 30 km to the north of Belo Horizonte and encompasses the Environmental Protection Area (APA, in the Portuguese acronym) Karst of Lagoa Santa. The Sete Lagoas Formation is the main outcropping unit, configuring a diverse karst geomorphology, characterized by canyons, blind v...

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Autores:	Teodoro, Maria Isabel Pereira, Velásquez, Leila Nunes Menegasse, Fleming, Peter Marshall, Paula, Rodrigo Sérgio, Souza, Rogério Tadeu, Doi, Bruno Mamoru
Tipo de recurso:	artículo
Estado:	Versión publicada
Fecha de publicación:	2019
País:	Brasil
Institución:	Associação Brasileira de Águas Subterrâneas
Repositorio:	Águas Subterrâneas (São Paulo. Online)
Idioma:	portugués
OAI Identifier:	oai:ojs.aguassubterraneas.abas.org:article/29532
Acceso en línea:	https://aguassubterraneas.abas.org/asubterraneas/article/view/29532
Access Level:	acceso abierto
Palabra clave:	Karst hydrogeology. APA Karst of Lagoa Santa. Dye tracer. Hydraulic interconnections. Hidrogeologia cárstica. APA Carste de Lagoa Santa. Traçadores corantes. Interconexões hidráulicas.

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spelling	Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas GeraisHidrodinâmica do Sistema Aquífero Cárstico Bambuí, com uso de traçadores corantes, na região de Lagoa Santa, Minas GeraisKarst hydrogeology. APA Karst of Lagoa Santa. Dye tracer. Hydraulic interconnections.Hidrogeologia cárstica. APA Carste de Lagoa Santa. Traçadores corantes. Interconexões hidráulicas.The study area is located 30 km to the north of Belo Horizonte and encompasses the Environmental Protection Area (APA, in the Portuguese acronym) Karst of Lagoa Santa. The Sete Lagoas Formation is the main outcropping unit, configuring a diverse karst geomorphology, characterized by canyons, blind valleys, dolines and caves. In the subsurface, a network of conduits forms karst aquifers that shelters important water reserves, which have been suffering qualitative and quantitative risks due to the intense pressure of demographic and industrial expansion. Employing the dye tracer injection technique, it has been an attempt to stablish the hydraulic interconnections, flowpath hydrodynamic conditions, configurations of recharge, circulation and discharge of these aquifers. Ten qualitative-quantitative assays were executed using the Fluorescein and Rhodamine WT. Positive results for water interconnections were observed in seven assays, revealing the provenance of 68.3%, 13.0%, 70.2%, and 41.3% of the outflows in four springs. The average apparent velocities ranged from 9.5x10-3 m/s to 4.49x10-2 m/s and 1.43x10-2 m/s to 6.27x10-2 m/s considering the sinuosity factor of the route, the which evidence the high velocity of the flows.A área estudada localiza-se a 30 km a norte de Belo Horizonte e engloba a Área de Proteção Ambiental Carste de Lagoa Santa. A Formação Sete Lagoas é a principal unidade aflorante, configurando uma geomorfologia cárstica diversa, caracterizada por canyons, vales cegos, dolinas e cavernas. Em subsuperfície, uma rede de condutos forma aquíferos cársticos que abrigam importantes reservas hídricas, que vêm sofrendo riscos qualitativos e quantitativos face a acentuada pressão da expansão demográfica e industrial. Empregando-se a técnica de injeção de traçadores corantes, procurou-se estabelecer as interconexões hidráulicas, condições hidrodinâmicas das rotas de fluxo, configurações da recarga, circulação e descarga desses aquíferos. Foram executados dez ensaios quali-quantitativos utilizando Fluoresceína e Rodamina WT. Resultados positivos para interconexões hídricas foram observados em sete ensaios, desvendando-se a proveniência de 68,3%, 13,0%, 70,2%, 41,3% das descargas em quatro surgências. As velocidades médias aparentes variaram de 9,5x10-3 m/s a 4,49x10-2 m/s e de 1,43x10-2 m/s a 6,27x10-2 m/s considerando-se o fator de sinuosidade da rota, o que evidencia a alta velocidade dos fluxos.ABAS - Associação Brasileira de Águas Subterrâneas2019-11-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://aguassubterraneas.abas.org/asubterraneas/article/view/2953210.14295/ras.v33i4.29532Águas Subterrâneas; v. 33 n. 4 (2019): REVISTA ÁGUAS SUBTERRÂNEAS; 392-4062179-97840101-7004reponame:Águas Subterrâneas (São Paulo. Online)instname:Associação Brasileira de Águas Subterrâneasinstacron:ABASporhttps://aguassubterraneas.abas.org/asubterraneas/article/view/29532/19227Copyright (c) 2019 Águas Subterrâneasinfo:eu-repo/semantics/openAccessTeodoro, Maria Isabel PereiraVelásquez, Leila Nunes MenegasseFleming, Peter MarshallPaula, Rodrigo SérgioSouza, Rogério TadeuDoi, Bruno Mamoru2019-12-11T21:58:45Zoai:ojs.aguassubterraneas.abas.org:article/29532Revistahttps://aguassubterraneas.abas.org/asubterraneas/ONGhttps://aguassubterraneas.abas.org/asubterraneas/oaihidropaulo@gmail.com2179-97840101-7004opendoar:2019-12-11T21:58:45Águas Subterrâneas (São Paulo. Online) - Associação Brasileira de Águas Subterrâneasfalse
dc.title.none.fl_str_mv	Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas Gerais Hidrodinâmica do Sistema Aquífero Cárstico Bambuí, com uso de traçadores corantes, na região de Lagoa Santa, Minas Gerais
title	Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas Gerais
spellingShingle	Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas Gerais Teodoro, Maria Isabel Pereira Karst hydrogeology. APA Karst of Lagoa Santa. Dye tracer. Hydraulic interconnections. Hidrogeologia cárstica. APA Carste de Lagoa Santa. Traçadores corantes. Interconexões hidráulicas.
title_short	Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas Gerais
title_full	Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas Gerais
title_fullStr	Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas Gerais
title_full_unstemmed	Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas Gerais
title_sort	Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas Gerais
dc.creator.none.fl_str_mv	Teodoro, Maria Isabel Pereira Velásquez, Leila Nunes Menegasse Fleming, Peter Marshall Paula, Rodrigo Sérgio Souza, Rogério Tadeu Doi, Bruno Mamoru
author	Teodoro, Maria Isabel Pereira
author_facet	Teodoro, Maria Isabel Pereira Velásquez, Leila Nunes Menegasse Fleming, Peter Marshall Paula, Rodrigo Sérgio Souza, Rogério Tadeu Doi, Bruno Mamoru
author_role	author
author2	Velásquez, Leila Nunes Menegasse Fleming, Peter Marshall Paula, Rodrigo Sérgio Souza, Rogério Tadeu Doi, Bruno Mamoru
author2_role	author author author author author
dc.subject.por.fl_str_mv	Karst hydrogeology. APA Karst of Lagoa Santa. Dye tracer. Hydraulic interconnections. Hidrogeologia cárstica. APA Carste de Lagoa Santa. Traçadores corantes. Interconexões hidráulicas.
topic	Karst hydrogeology. APA Karst of Lagoa Santa. Dye tracer. Hydraulic interconnections. Hidrogeologia cárstica. APA Carste de Lagoa Santa. Traçadores corantes. Interconexões hidráulicas.
description	The study area is located 30 km to the north of Belo Horizonte and encompasses the Environmental Protection Area (APA, in the Portuguese acronym) Karst of Lagoa Santa. The Sete Lagoas Formation is the main outcropping unit, configuring a diverse karst geomorphology, characterized by canyons, blind valleys, dolines and caves. In the subsurface, a network of conduits forms karst aquifers that shelters important water reserves, which have been suffering qualitative and quantitative risks due to the intense pressure of demographic and industrial expansion. Employing the dye tracer injection technique, it has been an attempt to stablish the hydraulic interconnections, flowpath hydrodynamic conditions, configurations of recharge, circulation and discharge of these aquifers. Ten qualitative-quantitative assays were executed using the Fluorescein and Rhodamine WT. Positive results for water interconnections were observed in seven assays, revealing the provenance of 68.3%, 13.0%, 70.2%, and 41.3% of the outflows in four springs. The average apparent velocities ranged from 9.5x10-3 m/s to 4.49x10-2 m/s and 1.43x10-2 m/s to 6.27x10-2 m/s considering the sinuosity factor of the route, the which evidence the high velocity of the flows.
publishDate	2019
dc.date.none.fl_str_mv	2019-11-23
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/29532 10.14295/ras.v33i4.29532
url	https://aguassubterraneas.abas.org/asubterraneas/article/view/29532
identifier_str_mv	10.14295/ras.v33i4.29532
dc.language.iso.fl_str_mv	por
language	por
dc.relation.none.fl_str_mv	https://aguassubterraneas.abas.org/asubterraneas/article/view/29532/19227
dc.rights.driver.fl_str_mv	Copyright (c) 2019 Águas Subterrâneas info:eu-repo/semantics/openAccess
rights_invalid_str_mv	Copyright (c) 2019 Águas Subterrâneas
eu_rights_str_mv	openAccess
dc.format.none.fl_str_mv	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. 33 n. 4 (2019): REVISTA ÁGUAS SUBTERRÂNEAS; 392-406 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
institution	ABAS
reponame_str	Águas Subterrâneas (São Paulo. Online)
collection	Águas Subterrâneas (São Paulo. Online)
repository.name.fl_str_mv	Águas Subterrâneas (São Paulo. Online) - Associação Brasileira de Águas Subterrâneas
repository.mail.fl_str_mv	hidropaulo@gmail.com
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score	15,301629

Hydrodynamic of the Bambuí Karst Aquifer System, with the use of dye tracers, in the Lagoa Santa region, Minas Gerais

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