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Modelling Deposition and Erosion rates with RadioNuclides (MODERN) – Part 2: A comparison of different models to convert 239+240Pu inventories into soil redistribution rates at unploughed sites
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 3641309
Author(s) Arata, L.; Alewell, C.; Frenkel, E.; A’Campo-Neuen, A.; Iurian, A. -R.; Ketterer, M. E.; Mabit, L.; Meusburger, K.
Author(s) at UniBasel Alewell, Christine
Di Bella, Katrin
Arata, Laura
A'Campo-Neuen, Annette
Frenkel, Elena
Year 2016
Title Modelling Deposition and Erosion rates with RadioNuclides (MODERN) – Part 2: A comparison of different models to convert 239+240Pu inventories into soil redistribution rates at unploughed sites
Journal Journal of Environmental Radioactivity
Volume 162-163
Pages / Article-Number 97-106
Keywords Soil erosion; Plutonium; Inventory method; Diffusion and migration model; Profile distribution model; Proportional model
Abstract Sheet erosion is one of the major threats to alpine soils. To quantify its role and impact in the degradation processes of alpine grasslands, the application of Fallout Radionuclides (FRN) showed very promising results. The specific characteristics of plutonium 239†+†240 ( 239+240 Pu), such as the homogeneous fallout distribution, the long half-life and the cost and time effective measurements make this tracer application for investigating soil degradation in Alpine grasslands more suitable than any other FRN (e.g. 137 Cs). However, the conversion of 239+240 Pu inventories into soil erosion rates remains a challenge. Currently available conversion models have been developed mainly for 137 Cs with later adaptation to other FRN (e.g. Excess 210 Pb, and 7 Be), each model being defined for specific land use (ploughed and/or unploughed) and processes (erosion or deposition). As such, they may fail in describing correctly the distribution of Pu isotopes in the soil. A new conversion model, MODERN, with an adaptable algorithm to estimate erosion and deposition rates from any FRN inventory changes was recently proposed (Arata et†al., submitted). In this complementary contribution, the authors compare the application of MODERN to other available conversion models. The results show a good agreement between soil redistribution rates obtained from MODERN and from the models currently used by the FRN scientific community (i.e. the Inventory Method).
Publisher Elsevier
ISSN/ISBN 0265-931X ; 1879-1700
edoc-URL http://edoc.unibas.ch/44393/
Full Text on edoc No
Digital Object Identifier DOI 10.1016/j.jenvrad.2016.05.009
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/27227561
ISI-Number WOS:000390183000012
Document type (ISI) Journal Article
 
   

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