Coloured rain dust from Sahara Desert is still radioactive |
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| Authors: | Papastefanou C Manolopoulou M Stoulos S Ioannidou A Gerasopoulos E |
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| Institution: | Atomic and Nuclear Physics Laboratory, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece. papastefanou@physics.auth.gr |
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| Abstract: | A coloured rain event originating from the Sahara Desert occurred on April 9, 2000 at Thessaloniki, Northern Greece (40 degrees 38'N, 22 degrees 58'E). The radioactive nuclides that were determined in a coloured rain dust sample were 137Cs of Chernobyl origin, 7Be of cosmogenic origin and 40K of terrestrial origin. Cesium-137 still remained 14 years after the Chernobyl accident, reaching 26.6 Bq kg-1 in the coloured rain dust. |
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