Comparison of airborne and terrestrial gamma spectrometry measurements - evaluation of three areas in southern Sweden
| Autor: | Peder Kock, Christer Samuelsson |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Health
Toxicology and Mutagenesis Potassium Radioisotopes Positive correlation Radiation Monitoring Soil Pollutants Radioactive Environmental Chemistry Statistical analysis Airborne gamma spectrometry Waste Management and Disposal Natural radioactivity Remote sensing Sweden Thorium General Medicine Pollution radiation Spectrometry Gamma Ground level Background Linear relationship Mobile gamma spectrometry Air Pollutants Radioactive Potassium Linear Models Geological survey Uranium Environmental science Environmental Sciences |
| Zdroj: | Journal of Environmental Radioactivity; 102(6), pp 605-613 (2011) |
| ISSN: | 0265-931X 1879-1700 |
| Popis: | The Geological Survey of Sweden (SGU) has been conducting airborne gamma spectrometry measurements of natural radioactivity in Sweden for more than 40 years. Today, the database covers about 80% of the country's land surface. This article explores the first step of putting this data into use in radioactive source search at ground level. However, in order to be able to use the airborne background measurements at ground level, SGU data must be validated against terrestrial data. In this work, we compare the SGU data with data measured by a portable backpack system. This is done for three different areas in southern Sweden. The statistical analysis shows that a linear relationship and a positive correlation exist between the air and ground data. However, this linear relationship could be revealed only when the region possessed large enough variations in areal activity. Furthermore, the activity distributions measured show good agreement to those of SGU. We conclude that the SGU database could be used for terrestrial background assessment, given that a linear transfer function is established. |
| Databáze: | OpenAIRE |
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