Accumulated 90Sr deposition in the Faroe Islands from nuclear weapons tests

A relationship between total accumulated 90Sr deposition and average annual precipitation has been established at two Faroese sites (Torshavn and Klaksvik) with long time series (1963-69 and 1963-85) of 90Sr in rainwater. These sites have been used as references in order to estimate the total accumulated 90Sr deposition at other sites, where no deposition data are available. According to this study, the major part of the 90Sr deposition was acquired during the 1960s. The shorter period 1963 to 1969 accounts for 74-86% of the deposition between 1963 and 1985. The highest deposition values are found in the northern part of the country and the lowest values are found for the far south and the far west of the country. (au)