Implementation of a food chain sub-module into a model for radioecological assessments in the coastal waters around Iceland

Mikhail Iosjpe, Mats Isaksson, Ó. Halldórsson, Per Roos, Kai Logemann, G. Jonsson, Hans Pauli Joensen, Vesa Suolanen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Modelling tools of radioecological assessments for the coastal waters around Iceland are developed on the base
of the NRPA model for the Arctic and Nordic Seas and the CODE operational ocean model. The present
approach includes the kinetic modelling of bioaccumulation of radionuclides in biota. The comparison with
experimental data shows that dynamic modelling of bioaccumulation processes can improve accuracy for
description of the concentration of radionuclides in biota. This is due to the more realistic approach when using
kinetic modelling compared to the equilibrium assumption when using concentration ratios factors. Further,
estimations of radionuclide concentration in marine organisms and dose assessment with the implementation
of the kinetic bioaccumulation model clearly demonstrate that there is a significant quantitative difference
between the kinetic modelling approach and the approach based on the assumption of constant concentration
ratios. Also, kinetic modelling of bioaccumulation processes leads to a better harmonisation between the
different calculations (for example, between doses to the critical group and concentrations in marine organisms
for short-life radionuclides) and also to better logical explanations of the results.
Original languageEnglish
Title of host publicationProceedings from Second International Conference on Radioecological Concentration Processes Sevilla, Spain November 2016
Number of pages8
Publication statusPublished - 2016
EventSecond International Conference on Radioecological Concentration Processes. Sevilla, Spain November 2016
- Sevilla
Duration: 6 Nov 20169 Nov 2016

Conference

ConferenceSecond International Conference on Radioecological Concentration Processes. Sevilla, Spain November 2016
Period6/11/169/11/16

Keywords

  • Radioactivity
  • Food chain
  • Model
  • Radioecological assessment
  • Arctic
  • Seawater

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