Mapping potassium and thorium concentrations in Belgian soils
| Autor: | B. Dehandschutter, François Tondeur, Giorgia Cinelli |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
010504 meteorology & atmospheric sciences
Potassium in soil Health Toxicology and Mutagenesis Potassium Radioisotopes chemistry.chemical_element 010501 environmental sciences Thorium in soil 01 natural sciences Article Multivariate interpolation Radioactivity mapping Soil Belgium Moving average Radiation Monitoring Environmental Chemistry Soil Pollutants Radioactive Waste Management and Disposal 0105 earth and related environmental sciences Remote sensing Radionuclide Thorium Soil classification General Medicine Grid Pollution Joint research Geological units chemistry Soil water Soil classes Environmental science |
| Zdroj: | Journal of Environmental Radioactivity |
| ISSN: | 1879-1700 0265-931X |
| Popis: | The European Atlas of Natural Radiation developed by the Joint Research Centre (JRC) of the European Commission includes maps of potassium K and thorium Th. With several different databases available, including data (albeit not calibrated) from an airborne survey, Belgium is a favourable case for exploring the methodology of mapping for these natural radionuclides. Harmonized databases of potassium and thorium in soil were built by radiological (not airborne) and geochemical data. Using this harmonized database it was possible to calibrate the data from the airborne survey. Several methods were used to perform spatial interpolation and to smooth the data: moving average (MA) without constraint, or constrained by soil class and by geological unit. Overall, there was a reasonable agreement between the maps on a 1 × 1 km2 grid obtained with the two datasets (airborne data and harmonized soil data) with all the methods. The agreement was better when the maps are reduced to a 10 km × 10 km grid used for the European Atlas of Natural Radiation. The best agreement was observed with the MA constrained by geological unit. Highlights • Harmonization of soil K and Th radiological and geochemical data. • Calibration of airborne K and Th survey. • Analysis of variance of soil K and Th data. • Mapping: moving average without constraint, by soil class and by geological unit. • Influence of mapping method and resolution. |
| Databáze: | OpenAIRE |
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