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Abstract
The specific Si32 activity of air in Denmark showed a seasonal variation by a factor of 5 in 1963. The total Si32 fallout was 5.510?5 dpm cm?2 year?1 in the period Sept. 64-Sept. 65. Measurements on accumulated snow and old glacier ice in Norway show Si32 as an usable element for dating of up to 2000–3000 years old ice.DOI: 10.1111/j.2153-3490.1966.tb00224.x