This paper reports the Sr-90 and Cs-137 distribution measured in 1987,
1989 and 1990 along a soil profile in a grassland, located in the Nor
th of Italy. The vertical distribution of Cs-137 in soil due to the Ch
ernobyl accident was used to validate the RABES (RAdionuclides BEhavio
ur in Soil) model (Velasco et al., 1991).