The AMAP Radioactivity Thematic Data Centre holds radioactivity sources, levels and trends data for monitoring and assessment. The database is hosted by the Norwegian Radiation Protection Authority (NRPA), Oslo, Norway.
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The project monitors the artificial radioactivities in natural products in Finnish Lapland. The work mainly started after Chernobyl accident.
Lichens are the best terrestrial bioindicators for radioactive fallout and also the most important link in foodchain lichen - reindeer - man. Generally, Fenced permanent sampling plots are used to study the biological half-life of 137Cs in lichen. However, some of the STUKs sampling plots are unfenced which are subjected to grazing by reindeer. Start year: early 60's as a project of the Radiochemistry Department of University in Helsinki. Stuk's participation since 1975. Data are collected from 1961, 1980, 1982 or 1986, continuously every 3-5 years. Data processing/work-up and data archiving/reporting work are conducted from 1961, 1980, 1982. Continous data sets from 1986 to 2010.
Elevated levels of 137Cs caused by previous atmospheric nuclear weapons tests fallout and the Chernobyl accident have been observed in Finnmark, Northern Norway. Due to the large consumption of potentially contaminated reindeer meat, whole body measurements of 137Cs levels in reindeer herders have been performed since 1965.
1: Cs-137 trend in marine sediments from East and West Greenland - to be compared with As data 2: Cs-137 in Greenland reindeer from areas with and without lichen