Modelling of radiocesium in lakes

The VAMP model

Lars Håkanson, John Brittain, Luigi Monte, Rudie Heling, Ulla Bergström, Vesa Suolanen

Research output: Contribution to journalArticleScientificpeer-review

26 Citations (Scopus)

Abstract

The objective of this work is to present a new, state-of-the-art model for predicting radiocesium in lakes. The target variables to model and predict are Cs concentrations in lake water and in predatory fish. These results emanate from IAEA 's VAMP project, initiated after the Chernobyl accident in 1986. The sites included in this work cover a wide range of lake and catchment characteristics. This new VAMP model has nine specific components (see below), which are meant to increase the predictive accuracy of the model and make it easy to apply for lakes in general. (1) A seasonal variability moderator for water discharge. (2) A dimensionless moderator for the water retention rate. (3) A seasonal variability moderator for epilimnetic and hypolimnetic temperatures, which influence lake stratification and redox-induced internal loading of radiocesium from sediments. (4) A transfer coefficient to calculate relationships between biomasses. (5) An outflow rate function for the transport of cesium from the catchment to the lake. (6) A dimensionless moderator for planktonic uptake of radiocesium, i.e. for the transfer of cesium in dissolved phase in the lake water to phytoplankton. (7) An algorithm for the lake partition coefficient (K.d). (8) A sub-model to express biological half-lives. (9) An approach to quantify internal loading. Empirical validations, and critical sensitivity tests, have shown that the VAMP model in many lakes yields just as good predictions as parallel sets of empirical data, and this is as good as any model can yield. It should be possible to improve the VAMP model further if and when more field data become available, for both the VAMP lakes and other sites.
Original languageEnglish
Pages (from-to)255-308
Number of pages53
JournalJournal of Environmental Radioactivity
Volume33
Issue number3
DOIs
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed

Fingerprint

Lakes
lake
Moderators
modeling
cesium
Cesium
Water
lake water
Catchments
catchment
Chernobyl accident
water retention
Phytoplankton
partition coefficient
half life
stratification
outflow
Biomass
Fish
phytoplankton

Cite this

Håkanson, Lars ; Brittain, John ; Monte, Luigi ; Heling, Rudie ; Bergström, Ulla ; Suolanen, Vesa. / Modelling of radiocesium in lakes : The VAMP model. In: Journal of Environmental Radioactivity. 1996 ; Vol. 33, No. 3. pp. 255-308.
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abstract = "The objective of this work is to present a new, state-of-the-art model for predicting radiocesium in lakes. The target variables to model and predict are Cs concentrations in lake water and in predatory fish. These results emanate from IAEA 's VAMP project, initiated after the Chernobyl accident in 1986. The sites included in this work cover a wide range of lake and catchment characteristics. This new VAMP model has nine specific components (see below), which are meant to increase the predictive accuracy of the model and make it easy to apply for lakes in general. (1) A seasonal variability moderator for water discharge. (2) A dimensionless moderator for the water retention rate. (3) A seasonal variability moderator for epilimnetic and hypolimnetic temperatures, which influence lake stratification and redox-induced internal loading of radiocesium from sediments. (4) A transfer coefficient to calculate relationships between biomasses. (5) An outflow rate function for the transport of cesium from the catchment to the lake. (6) A dimensionless moderator for planktonic uptake of radiocesium, i.e. for the transfer of cesium in dissolved phase in the lake water to phytoplankton. (7) An algorithm for the lake partition coefficient (K.d). (8) A sub-model to express biological half-lives. (9) An approach to quantify internal loading. Empirical validations, and critical sensitivity tests, have shown that the VAMP model in many lakes yields just as good predictions as parallel sets of empirical data, and this is as good as any model can yield. It should be possible to improve the VAMP model further if and when more field data become available, for both the VAMP lakes and other sites.",
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Håkanson, L, Brittain, J, Monte, L, Heling, R, Bergström, U & Suolanen, V 1996, 'Modelling of radiocesium in lakes: The VAMP model', Journal of Environmental Radioactivity, vol. 33, no. 3, pp. 255-308. https://doi.org/10.1016/0265-931X(95)00095-R

Modelling of radiocesium in lakes : The VAMP model. / Håkanson, Lars; Brittain, John; Monte, Luigi; Heling, Rudie; Bergström, Ulla; Suolanen, Vesa.

In: Journal of Environmental Radioactivity, Vol. 33, No. 3, 1996, p. 255-308.

Research output: Contribution to journalArticleScientificpeer-review

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T2 - The VAMP model

AU - Håkanson, Lars

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AU - Suolanen, Vesa

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DO - 10.1016/0265-931X(95)00095-R

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EP - 308

JO - Journal of Environmental Radioactivity

JF - Journal of Environmental Radioactivity

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