Reconstruction of 137Cs signal in Cuba using 7Be as tracer of vertical transport processes in the atmosphere |
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| Authors: | Hernández C M Alonso Aguila H Cartas Asencio M Díaz Caravaca A Muñoz |
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| Institution: | Centro de Estudios Ambientales de Cienfuegos, AP 5. Ciudad Nuclear, Cienfuegos, Cuba. carlos@ceac.perla.inf.cu |
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| Abstract: | Levels of 137Cs and 7Be in aerosols have been measured in the region of Cienfuegos (Cuba) during the period 1994-1998. 137Cs showed the same seasonal trend as 7Be and the monthly regimes of precipitation seemed to be responsible for the observed pattern. The 137Cs/7Be ratio obtained in Cienfuegos and Miami (FL) in this period was used to calibrate the long-term database of 137Cs concentrations recorded in Miami (250 km from Cienfuegos). The database was then employed to reconstruct the 137Cs monthly concentrations in Cienfuegos since 1957. |
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