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dc.contributor.author
Pereira Cardoso, Renan
dc.contributor.author
Muniz, Marcelo C.
dc.contributor.author
Juri Ayub, Jimena
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Fagundes, Bruno
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Meigikos dos Anjos, Robewrto
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Silva Cid, Alberto
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Velasco, Ricardo Hugo
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Lohaiza, Flavia Analia
dc.date.available
2024-10-21T17:52:55Z
dc.date.issued
2011
dc.identifier.citation
7Be content in rainfall and soil deposition in South American coastal ecosystems; XXXIV edition of the brazilian workshop on nuclear physics; Brasil; 2011; 1-6
dc.identifier.issn
1824-8039
dc.identifier.uri
http://hdl.handle.net/11336/246219
dc.description.abstract
Beryllium-7 (7Be) is a cosmogenic radionuclide that enters from the atmosphere, mainly by wet deposition, being widely used to explore environmental processes. With the aim of using beryllium as an environmental tracer, we are evaluating the 7Be input through rainfalls, its soil deposition and vertical distribution in soil profile. In Niteroi City (Rio de Janeiro State, Brazil) the 7Be content in rainfall and soil were evaluated. The 7Be content in samples was determined by measuring its γ-emission at 477.6 Kev, using a special 55% efficiency high-purity germanium detector produced by Canberra. 7Be activity concentration in rainfall ranged from 0.12 ± 0.15 Bq l-1 to 1.96 ± 0.23 Bq l-1 (Mean=0.58 Bq l-1, SD=0.48 Bq l-1). The magnitude of precipitation ranged from 2.8 to 40 mm. The 7Be activity concentrations in Niteroi rains are lower than values reported from another sites. Differences in 7Be content should be expected to occur in different environment, due to the effect that latitude and altitude can have on 7Be atmospheric concentrations. 7Be wet deposition ranged from 0.39 ± 0.49 Bq m-2 to 34.8 ± 4.9 Bq m-2. The content and distribution of 7Be in soil were analyzed for the months of February and April. 7Be are presents at the first 2 cm depth and the activity concentration decrease exponentially, when depth increases. The total 7Be content in soil were 190 Bq m-2 and 330 Bq m-2 for February and April, respectively. These results are expected because 7Be are strongly retained in the first centimetres of soil and between February and April several rains have occurred, providing 7Be to soil.
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application/pdf
dc.language.iso
eng
dc.publisher
Sistema de Información sobre Sequías para el sur de Sudamérica
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
no corresponde
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Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
7Be content in rainfall and soil deposition in South American coastal ecosystems
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/conferenceObject
dc.type
info:ar-repo/semantics/documento de conferencia
dc.date.updated
2024-09-03T13:21:41Z
dc.journal.pagination
1-6
dc.journal.pais
Italia
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Trieste
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Fil: Pereira Cardoso, Renan. Universidade Federal Fluminense; Brasil
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Fil: Muniz, Marcelo C.. Universidade Federal Fluminense; Brasil
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Fil: Juri Ayub, Jimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi"; Argentina. Universidade Federal Fluminense; Brasil
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Fil: Fagundes, Bruno. Universidade Federal Fluminense; Brasil
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Fil: Meigikos dos Anjos, Robewrto. Universidade Federal Fluminense; Brasil
dc.description.fil
Fil: Silva Cid, Alberto. Universidade Federal Fluminense; Brasil
dc.description.fil
Fil: Velasco, Ricardo Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi"; Argentina
dc.description.fil
Fil: Lohaiza, Flavia Analia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi"; Argentina
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.22323/1.142.0064
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pos.sissa.it/142/064/pdf
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dc.coverage
Internacional
dc.type.subtype
Congreso
dc.description.nombreEvento
XXXIV edition of the brazilian workshop on nuclear physics
dc.date.evento
2011-06-05
dc.description.paisEvento
Brasil
dc.type.publicacion
Journal
dc.description.institucionOrganizadora
Universidade Federal Fluminense
dc.source.revista
Proceedings of science
dc.date.eventoHasta
2011-06-10
dc.type
Congreso
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