%0 Journal Article
%@nexthigherunit 8JMKD3MGPCW/3EU29DP
%X Fluxes of Rn-222 from the ice-free terrain to the atmosphere were measured directly, for the first time, at the Brazilian Antartic Station Ferraz during the summer field campaign of 1998/99. Average value for the flux was 7.7 +/- 4.8x10(-2)atoms cm(-2)s(-1)and it ranged between 0.21x10(-2)atoms cm(-2)s(-1)and 28x10(-2)atoms cm(-2)s(-1). The average flux of Rn-220 was estimated to be 23 atoms cm(-2)s(-1), using a combination of two techniques: nuclear track detection and alpha spectrometry of radon daughters. It was found that the production of radon by uranium (41.54 +/- 7.17 Bq kg(-1)) and thorium (57.97 +/- 12.14 Bq kg(-1)) equivalent soil contents, and a diffusion coefficient derived from experimental data for the local terrain could account for this average flux. Nevertheless, the large surges of Rn-222 in the atmosphere frequently observed for that area could not be-explained by this flux only.
%N 3
%9 journal article
%@secondarydate 20020423
%T Radon flux at King George Island, Antartic Peninsula
%@electronicmailaddress heitor@lcr.uerj.br
%@electronicmailaddress enio.pereira@inpe.br
%@secondarytype PRE PI
%K geofísica espacial, antartica peninsula, RN-222, soil, transport, diffusion, air.
%@archivingpolicy denypublisher denyfinaldraft24
%@usergroup administrator
%@usergroup marcelo.pazos@inpe.br
%@group
%@group DGE-INPE-MCT-BR
%@e-mailaddress marcelo.pazos@inpe.br
%3 1-s2.0-S0265931X01001370-main.pdf
%@secondarykey INPE-9004-PRE/4682
%F 10046
%@issn 0265-931X
%2 sid.inpe.br/iris@1905/2005/08.03.21.55.41
%@affiliation Universidade do Estado do Rio de Janeiro
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%B Journal of Environmental Radioactivity
%@versiontype publisher
%P 283-304
%4 sid.inpe.br/iris@1905/2005/08.03.21.55
%@documentstage not transferred
%D 2002
%V 61
%A Silva, Heitor Evangelista da,
%A Pereira, Enio Bueno,
%@dissemination WEBSCI; PORTALCAPES.
%@area CEA
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}