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Validation of $$^{131}$$I ecological transfer models and thyroid dose assessments using Chernobyl fallout data from the Plavsk district, Russia

ロシア、プラブスク地域におけるチェルノブイリ事故フォールアウトデータを用いた$$^{131}$$I生態圏移行モデル及び甲状腺線量評価の妥当性検証

Zvonova, I.*; Krajewski, P.*; Berkovsky, V.*; Ammann, M.*; Duffa, C.*; Filistovic, V.*; 本間 俊充; Kany$'a$r, B.*; Nedveckaite, T.*; Simon, S. L.*; Vlasov, O.*; Webbe-Wood, D.*

Zvonova, I.*; Krajewski, P.*; Berkovsky, V.*; Ammann, M.*; Duffa, C.*; Filistovic, V.*; Homma, Toshimitsu; Kany$'a$r, B.*; Nedveckaite, T.*; Simon, S. L.*; Vlasov, O.*; Webbe-Wood, D.*

Within the project EMRAS organized by the IAEA in 2003 experimental data of $$^{131}$$I measurements following the Chernobyl accident in the Plavsk district of Tula region, Russia were used to validate the calculations of some radioecological transfer models. Ten participants were involved in the inter-comparison. Levels of $$^{137}$$Cs soil contamination in all the settlements and $$^{131}$$I/$$^{137}$$Cs isotopic ratios in the depositions in some locations were used as the main input information. 370 measurements of $$^{131}$$I content in thyroid of people, and 90 measurements of $$^{131}$$I concentration in milk were used for validation of the model predictions. A remarkable improvement in model performance comparing with previous inter-comparison exercise was demonstrated. Predictions of the various models were within a factor of three relative to the observations, and discrepancies between the estimates of average doses to thyroid produced by most participants did not exceed a factor of ten.

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パーセンタイル:86.74

分野:Environmental Sciences

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