214Bi/214Pb radioactivity ratio three-year monitoring in rainwater in Prague
Continuous monitoring of natural gamma radiation in air has been carried out, during December 2014 – January 2018, with 1-min cyclic measurement in Prague, Czech Republic using a NaI(Tl) probe. The 214Bi/214Pb ratio as a tracer in rainwater has been investigated to study its variations related to bo...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Sciendo
2020-06-01
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| Series: | Nukleonika |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/nuka-2020-0018 |
| _version_ | 1798030470850543616 |
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| author | Ambrosino Fabrizio Thinová Lenka Hýža Miroslav Sabbarese Carlo |
| author_facet | Ambrosino Fabrizio Thinová Lenka Hýža Miroslav Sabbarese Carlo |
| author_sort | Ambrosino Fabrizio |
| collection | DOAJ |
| description | Continuous monitoring of natural gamma radiation in air has been carried out, during December 2014 – January 2018, with 1-min cyclic measurement in Prague, Czech Republic using a NaI(Tl) probe. The 214Bi/214Pb ratio as a tracer in rainwater has been investigated to study its variations related to both the ambient dose equivalent rate per hour and the amount of rainfall. A hybrid methodology for time series analysis, composed of the aggregation of two signal decomposition methods (multiple linear regression and empirical mode decomposition) and one forecasting method (support vector regression), has been applied to identify the anomalies in the studied signals in order to better find correlations among them. The results show a strong correlation between the ambient dose equivalent rate and the 214Bi/214Pb ratio values and between both these signals and rainfall amount ≥5 mm/h. Furthermore, the considered descendants of radon are mainly responsible for the overall ambient dose equivalent rate. |
| first_indexed | 2024-04-11T19:42:01Z |
| format | Article |
| id | doaj.art-a439aabc3bdb4a3793402da4dbdddba1 |
| institution | Directory Open Access Journal |
| issn | 0029-5922 |
| language | English |
| last_indexed | 2024-04-11T19:42:01Z |
| publishDate | 2020-06-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Nukleonika |
| spelling | doaj.art-a439aabc3bdb4a3793402da4dbdddba12022-12-22T04:06:42ZengSciendoNukleonika0029-59222020-06-0165211511910.2478/nuka-2020-0018214Bi/214Pb radioactivity ratio three-year monitoring in rainwater in PragueAmbrosino Fabrizio0Thinová Lenka1Hýža Miroslav2Sabbarese Carlo3Department of Mathematics and Physics, University of Campania “Luigi Vanvitelli”, Viale Lincoln 5, 81100 Caserta, Italy, and Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519 Prague, Czech RepublicFaculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519 Prague, Czech RepublicNational Radiation Protection Institute (SÚRO), Bartoškova 28, 14000 Prague, Czech RepublicDepartment of Mathematics and Physics, University of Campania “Luigi Vanvitelli”, Viale Lincoln 5, 81100 Caserta, ItalyContinuous monitoring of natural gamma radiation in air has been carried out, during December 2014 – January 2018, with 1-min cyclic measurement in Prague, Czech Republic using a NaI(Tl) probe. The 214Bi/214Pb ratio as a tracer in rainwater has been investigated to study its variations related to both the ambient dose equivalent rate per hour and the amount of rainfall. A hybrid methodology for time series analysis, composed of the aggregation of two signal decomposition methods (multiple linear regression and empirical mode decomposition) and one forecasting method (support vector regression), has been applied to identify the anomalies in the studied signals in order to better find correlations among them. The results show a strong correlation between the ambient dose equivalent rate and the 214Bi/214Pb ratio values and between both these signals and rainfall amount ≥5 mm/h. Furthermore, the considered descendants of radon are mainly responsible for the overall ambient dose equivalent rate.https://doi.org/10.2478/nuka-2020-0018214bi/214pb gamma-ray ratioambient dose equivalent ratehybrid methodrainfalltime-series analysis |
| spellingShingle | Ambrosino Fabrizio Thinová Lenka Hýža Miroslav Sabbarese Carlo 214Bi/214Pb radioactivity ratio three-year monitoring in rainwater in Prague Nukleonika 214bi/214pb gamma-ray ratio ambient dose equivalent rate hybrid method rainfall time-series analysis |
| title | 214Bi/214Pb radioactivity ratio three-year monitoring in rainwater in Prague |
| title_full | 214Bi/214Pb radioactivity ratio three-year monitoring in rainwater in Prague |
| title_fullStr | 214Bi/214Pb radioactivity ratio three-year monitoring in rainwater in Prague |
| title_full_unstemmed | 214Bi/214Pb radioactivity ratio three-year monitoring in rainwater in Prague |
| title_short | 214Bi/214Pb radioactivity ratio three-year monitoring in rainwater in Prague |
| title_sort | 214bi 214pb radioactivity ratio three year monitoring in rainwater in prague |
| topic | 214bi/214pb gamma-ray ratio ambient dose equivalent rate hybrid method rainfall time-series analysis |
| url | https://doi.org/10.2478/nuka-2020-0018 |
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