Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8863262 | Applied Geochemistry | 2017 | 27 Pages |
Abstract
After the Chernobyl Nuclear Power Plant accident 137Cs was deposited in Mid-Sweden, with the highest activity in Gävle municipality. We compared aerial measurements of 137Cs on the ground over time in Gävle municipality since 1986. Maps of soil types and land use were used to analyse the decrease in activity of 137Cs. A spatial pattern was identified where the reduction of activity was greater in sand than in organic soil. For land use the reduction was greater in urban areas than in forests, with agricultural land in between. Long-term external radiation from 137Cs depends not only on the physical decay of 137Cs but also indirectly on geology, and this should be considered when calculating external radiation doses to individuals in epidemiological studies.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Martin Tondel, Göran Granath, Robert WÃ¥linder,