Using 222Rn as a tracer of geodynamical processes in underground environments

Autores
Valladares, Diego Leonardo; Da Silva, A. A. R.; Lacerda, T.; Anjos, R. M.; Rizzotto, Marcos Gregorio; Velasco, Ricardo Hugo; de Rosas, Juan Pablo; Tognelli, G.; Yoshimura, E. M.; Juri Ayub, Jimena
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Radon levels in two old mines in San Luis, Argentina, were measured and analyzed, with the aim to assess the potential use of this radioactive noble gas as a tracer of geological processes in underground environments. La Carolina gold mine and Los Cóndores tungsten mine are today used as tourismmines. CR-39 nuclear track detectors were used for this purpose. Measurements were performed during both winter and summer seasons. The findings show that in these environments, significant radon concentrations are subject to large seasonal fluctuations, due to the strong dependence on natural ventilation with the outside temperature variations. For both mines, higher concentration values of 222Rn were observed in summer than in winter; with an extreme ratio of 2.5 times between summer and winter seasons for Los Cóndores mine. The pattern of radon transport inside La Carolina mine revealed, contrary towhatwas believed, that thismine behaves as a systemwith two entrances located at different levels. However, this feature can only be observed in the winter season, when there is a marked difference between the inside and outside temperatures of the mine. In the case of Los Cóndores mine, the radon concentration pattern distribution is principally established by air current due to chimney-effect in summer and winter seasons. In both cases, the analyses of radon pattern distribution appear as a good method to trace air currents, and then localize unknown ducts, fissures or secondary tunnels in subterranean environments.
Fil: Valladares, Diego Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina
Fil: Da Silva, A. A. R.. Universidade de Sao Paulo; Brasil
Fil: Lacerda, T.. Universidade Federal Fluminense; Brasil
Fil: Anjos, R. M.. Universidade Federal Fluminense; Brasil
Fil: Rizzotto, Marcos Gregorio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina
Fil: Velasco, Ricardo Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina
Fil: de Rosas, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina
Fil: Tognelli, G.. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geologia; Argentina
Fil: Yoshimura, E. M.. Universidade de Sao Paulo; Brasil
Fil: Juri Ayub, Jimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina. Universidade Federal Fluminense; Brasil
Materia
Chimney Effect
Radon Transport
Cr-39 Nuclear Track Detectors
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/5798
Acceder
id CONICETDig_4ff438ef867f1ae902102da29bd54490
oai_identifier_str oai:ri.conicet.gov.ar:11336/5798
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Using 222Rn as a tracer of geodynamical processes in underground environmentsValladares, Diego LeonardoDa Silva, A. A. R.Lacerda, T.Anjos, R. M.Rizzotto, Marcos GregorioVelasco, Ricardo Hugode Rosas, Juan PabloTognelli, G.Yoshimura, E. M.Juri Ayub, JimenaChimney EffectRadon TransportCr-39 Nuclear Track Detectorshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Radon levels in two old mines in San Luis, Argentina, were measured and analyzed, with the aim to assess the potential use of this radioactive noble gas as a tracer of geological processes in underground environments. La Carolina gold mine and Los Cóndores tungsten mine are today used as tourismmines. CR-39 nuclear track detectors were used for this purpose. Measurements were performed during both winter and summer seasons. The findings show that in these environments, significant radon concentrations are subject to large seasonal fluctuations, due to the strong dependence on natural ventilation with the outside temperature variations. For both mines, higher concentration values of 222Rn were observed in summer than in winter; with an extreme ratio of 2.5 times between summer and winter seasons for Los Cóndores mine. The pattern of radon transport inside La Carolina mine revealed, contrary towhatwas believed, that thismine behaves as a systemwith two entrances located at different levels. However, this feature can only be observed in the winter season, when there is a marked difference between the inside and outside temperatures of the mine. In the case of Los Cóndores mine, the radon concentration pattern distribution is principally established by air current due to chimney-effect in summer and winter seasons. In both cases, the analyses of radon pattern distribution appear as a good method to trace air currents, and then localize unknown ducts, fissures or secondary tunnels in subterranean environments.Fil: Valladares, Diego Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; ArgentinaFil: Da Silva, A. A. R.. Universidade de Sao Paulo; BrasilFil: Lacerda, T.. Universidade Federal Fluminense; BrasilFil: Anjos, R. M.. Universidade Federal Fluminense; BrasilFil: Rizzotto, Marcos Gregorio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; ArgentinaFil: Velasco, Ricardo Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; ArgentinaFil: de Rosas, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; ArgentinaFil: Tognelli, G.. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geologia; ArgentinaFil: Yoshimura, E. M.. Universidade de Sao Paulo; BrasilFil: Juri Ayub, Jimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina. Universidade Federal Fluminense; BrasilElsevier2014-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5798Valladares, Diego Leonardo; Da Silva, A. A. R.; Lacerda, T.; Anjos, R. M.; Rizzotto, Marcos Gregorio; et al.; Using 222Rn as a tracer of geodynamical processes in underground environments; Elsevier; Science of the Total Environment; 468-469; 1-2014; 12-180048-9697enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0048969713009170info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1016/j.scitotenv.2013.08.003info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:17:43Zoai:ri.conicet.gov.ar:11336/5798instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:17:43.694CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Using 222Rn as a tracer of geodynamical processes in underground environments
title Using 222Rn as a tracer of geodynamical processes in underground environments
spellingShingle Using 222Rn as a tracer of geodynamical processes in underground environments
Valladares, Diego Leonardo
Chimney Effect
Radon Transport
Cr-39 Nuclear Track Detectors
title_short Using 222Rn as a tracer of geodynamical processes in underground environments
title_full Using 222Rn as a tracer of geodynamical processes in underground environments
title_fullStr Using 222Rn as a tracer of geodynamical processes in underground environments
title_full_unstemmed Using 222Rn as a tracer of geodynamical processes in underground environments
title_sort Using 222Rn as a tracer of geodynamical processes in underground environments
dc.creator.none.fl_str_mv Valladares, Diego Leonardo
Da Silva, A. A. R.
Lacerda, T.
Anjos, R. M.
Rizzotto, Marcos Gregorio
Velasco, Ricardo Hugo
de Rosas, Juan Pablo
Tognelli, G.
Yoshimura, E. M.
Juri Ayub, Jimena
author Valladares, Diego Leonardo
author_facet Valladares, Diego Leonardo
Da Silva, A. A. R.
Lacerda, T.
Anjos, R. M.
Rizzotto, Marcos Gregorio
Velasco, Ricardo Hugo
de Rosas, Juan Pablo
Tognelli, G.
Yoshimura, E. M.
Juri Ayub, Jimena
author_role author
author2 Da Silva, A. A. R.
Lacerda, T.
Anjos, R. M.
Rizzotto, Marcos Gregorio
Velasco, Ricardo Hugo
de Rosas, Juan Pablo
Tognelli, G.
Yoshimura, E. M.
Juri Ayub, Jimena
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Chimney Effect
Radon Transport
Cr-39 Nuclear Track Detectors
topic Chimney Effect
Radon Transport
Cr-39 Nuclear Track Detectors
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Radon levels in two old mines in San Luis, Argentina, were measured and analyzed, with the aim to assess the potential use of this radioactive noble gas as a tracer of geological processes in underground environments. La Carolina gold mine and Los Cóndores tungsten mine are today used as tourismmines. CR-39 nuclear track detectors were used for this purpose. Measurements were performed during both winter and summer seasons. The findings show that in these environments, significant radon concentrations are subject to large seasonal fluctuations, due to the strong dependence on natural ventilation with the outside temperature variations. For both mines, higher concentration values of 222Rn were observed in summer than in winter; with an extreme ratio of 2.5 times between summer and winter seasons for Los Cóndores mine. The pattern of radon transport inside La Carolina mine revealed, contrary towhatwas believed, that thismine behaves as a systemwith two entrances located at different levels. However, this feature can only be observed in the winter season, when there is a marked difference between the inside and outside temperatures of the mine. In the case of Los Cóndores mine, the radon concentration pattern distribution is principally established by air current due to chimney-effect in summer and winter seasons. In both cases, the analyses of radon pattern distribution appear as a good method to trace air currents, and then localize unknown ducts, fissures or secondary tunnels in subterranean environments.
Fil: Valladares, Diego Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina
Fil: Da Silva, A. A. R.. Universidade de Sao Paulo; Brasil
Fil: Lacerda, T.. Universidade Federal Fluminense; Brasil
Fil: Anjos, R. M.. Universidade Federal Fluminense; Brasil
Fil: Rizzotto, Marcos Gregorio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina
Fil: Velasco, Ricardo Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina
Fil: de Rosas, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina
Fil: Tognelli, G.. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geologia; Argentina
Fil: Yoshimura, E. M.. Universidade de Sao Paulo; Brasil
Fil: Juri Ayub, Jimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis; Argentina. Universidade Federal Fluminense; Brasil
description Radon levels in two old mines in San Luis, Argentina, were measured and analyzed, with the aim to assess the potential use of this radioactive noble gas as a tracer of geological processes in underground environments. La Carolina gold mine and Los Cóndores tungsten mine are today used as tourismmines. CR-39 nuclear track detectors were used for this purpose. Measurements were performed during both winter and summer seasons. The findings show that in these environments, significant radon concentrations are subject to large seasonal fluctuations, due to the strong dependence on natural ventilation with the outside temperature variations. For both mines, higher concentration values of 222Rn were observed in summer than in winter; with an extreme ratio of 2.5 times between summer and winter seasons for Los Cóndores mine. The pattern of radon transport inside La Carolina mine revealed, contrary towhatwas believed, that thismine behaves as a systemwith two entrances located at different levels. However, this feature can only be observed in the winter season, when there is a marked difference between the inside and outside temperatures of the mine. In the case of Los Cóndores mine, the radon concentration pattern distribution is principally established by air current due to chimney-effect in summer and winter seasons. In both cases, the analyses of radon pattern distribution appear as a good method to trace air currents, and then localize unknown ducts, fissures or secondary tunnels in subterranean environments.
publishDate 2014
dc.date.none.fl_str_mv 2014-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/5798
Valladares, Diego Leonardo; Da Silva, A. A. R.; Lacerda, T.; Anjos, R. M.; Rizzotto, Marcos Gregorio; et al.; Using 222Rn as a tracer of geodynamical processes in underground environments; Elsevier; Science of the Total Environment; 468-469; 1-2014; 12-18
0048-9697
url http://hdl.handle.net/11336/5798
identifier_str_mv Valladares, Diego Leonardo; Da Silva, A. A. R.; Lacerda, T.; Anjos, R. M.; Rizzotto, Marcos Gregorio; et al.; Using 222Rn as a tracer of geodynamical processes in underground environments; Elsevier; Science of the Total Environment; 468-469; 1-2014; 12-18
0048-9697
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0048969713009170
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.scitotenv.2013.08.003
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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