Assessing doses to terrestrial wildlife at a radioactive waste disposal site: Inter-comparison of modelling approaches

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dc.contributor.authorJohansen, MPen_AU
dc.contributor.authorBarnett, CLen_AU
dc.contributor.authorBeresford, NAen_AU
dc.contributor.authorBrown, JEen_AU
dc.contributor.authorČerne, Men_AU
dc.contributor.authorHoward, BJen_AU
dc.contributor.authorKamboj, Sen_AU
dc.contributor.authorKeum, DKen_AU
dc.contributor.authorSmodiš, Ben_AU
dc.contributor.authorTwining, JRen_AU
dc.contributor.authorVandenhove, Hen_AU
dc.contributor.authorVives i Batlle, Jen_AU
dc.contributor.authorWood, MDen_AU
dc.contributor.authorYu, Cen_AU
dc.date.accessioned2014-03-05T02:02:17Zen_AU
dc.date.available2014-03-05T02:02:17Zen_AU
dc.date.issued2012-06-15en_AU
dc.date.statistics2014-03-05en_AU
dc.description.abstractRadiological doses to terrestrial wildlife were examined in this model inter-comparison study that emphasised factors causing variability in dose estimation. The study participants used varying modelling approaches and information sources to estimate dose rates and tissue concentrations for a range of biota types exposed to soil contamination at a shallow radionuclide waste burial site in Australia. Results indicated that the dominant factor causing variation in dose rate estimates (up to three orders of magnitude on mean total dose rates) was the soil-to-organism transfer of radionuclides that included variation in transfer parameter values as well as transfer calculation methods. Additional variation was associated with other modelling factors including: how participants conceptualised and modelled the exposure configurations (two orders of magnitude); which progeny to include with the parent radionuclide (typically less than one order of magnitude); and dose calculation parameters, including radiation weighting factors and dose conversion coefficients (typically less than one order of magnitude). Probabilistic approaches to model parameterisation were used to encompass and describe variable model parameters and outcomes. The study confirms the need for continued evaluation of the underlying mechanisms governing soil-to-organism transfer of radionuclides to improve estimation of dose rates to terrestrial wildlife. The exposure pathways and configurations available in most current codes are limited when considering instances where organisms access subsurface contamination through rooting, burrowing, or using different localised waste areas as part of their habitual routines. Crown Copyright © 2012 Published by Elsevier B.Ven_AU
dc.identifier.citationJohansen, M. P., Barnett, C. L., Beresford, N. A., Brown, J. E., Cerne, M., Howard, B. J., Kamboj, S., Smodis, B., Twining, J. R., Vandenhove, H., Batlle, J. V. I., Wood, M. D., & Yu, C. (2012). Assessing doses to terrestrial wildlife at a radioactive waste disposal site: Inter-comparison of modelling approaches. Science of the Total Environment, 427, 238-246. doi:10.1016/j.scitotenv.2012.04.031en_AU
dc.identifier.govdoc4486en_AU
dc.identifier.issn0048-9697en_AU
dc.identifier.journaltitleScience of the Total Environmenten_AU
dc.identifier.pagination238-246en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.scitotenv.2012.04.031en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5240en_AU
dc.identifier.volume427en_AU
dc.language.isoenen_AU
dc.publisherElsevier Science BVen_AU
dc.subjectRadiation dosesen_AU
dc.subjectDosesen_AU
dc.subjectTerrestrial ecosystemsen_AU
dc.subjectRadioisotopesen_AU
dc.subjectRadioactive waste disposalen_AU
dc.subjectContaminationen_AU
dc.titleAssessing doses to terrestrial wildlife at a radioactive waste disposal site: Inter-comparison of modelling approachesen_AU
dc.typeJournal Articleen_AU
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