Modelling Deposition and Erosion rates with RadioNuclides (MODERN) - Part 1: A new conversion model to derive soil redistribution rates from inventories of fallout radionuclides

Laura Arata, Katrin Meusburger, Elena Frenkel, Annette A'Campo-Neuen, Andra Rada Iurian, Michael E Ketterer, Lionel Mabit, Christine Alewell

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

The measurement of fallout radionuclides (FRN) has become one of the most commonly used tools to quantify sediment erosion or depositional processes. The conversion of FRN inventories into soil erosion and deposition rates is done with a variety of models, which suitability is dependent on the selected FRN, soil cultivation (ploughed or unploughed) and movement (erosion or deposition). The authors propose a new conversion model, which can be easily and comprehensively used for different FRN, land uses and soil redistribution processes. The new model MODERN (Modelling Deposition and Erosion rates with RadioNuclides) considers the precise depth distribution of any FRN at the reference site, and allows adapting it for any specific site conditions. MODERN adaptability and performance in converting different FRN inventories is discussed for a theoretical case as well as for two already published case studies i.e. a 137Cs study in an alpine and unploughed area in the Aosta valley (Italy) and a 210Pbex study on a ploughed area located in the Transylvanian Plain (Romania). The tests highlight a highly significant correspondence (i.e. correlation factor of 0.91) between the results of MODERN and the published results of other models currently used by the FRN scientific community (i.e. the Profile Distribution Model and the Mass Balance Model). The development and the cost free accessibility of MODERN (see modern.umweltgeo.unibas.ch) will ensure the promotion of wider application of FRNs for tracing soil erosion and sedimentation.

Original languageEnglish (US)
Pages (from-to)45-55
Number of pages11
JournalJournal of Environmental Radioactivity
Volume162-163
DOIs
StatePublished - Oct 1 2016
Externally publishedYes

Keywords

  • Cs
  • Pb
  • Pu
  • Mass Balance Model
  • Profile Distribution Model
  • Soil erosion

ASJC Scopus subject areas

  • Environmental Chemistry
  • Health, Toxicology and Mutagenesis
  • Waste Management and Disposal
  • Pollution

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