ANTHROPOGENIC RADIONUCLIDES IN THE NORTH- WEST BLACK-SEA SEDIMENTS

Results of Cs-137 and Co-60 measurements in the bottom sediments in th e north-west part of the Black Sea show the distribution unhomogeneity of radionuclides concentration in the measurement area and in vertica l cores. Intermittency of layers with different radionuclides concentr ation in cores reflects the active horizontal movement of sediments at the shelf edge and continental slope. As a result of such phenomenon the sediment with age 7 years (according to the Chernobyl mark) were f ound at the 5-7 cm from the surface of the bottom sediments. Maximum C s-137 concentration (42 mBq/g) was found at the shelf edge in the surf ace layer of sediments. Maximum Co-60 concentration (1320 mBq/g) was c aused by a hot particle. There was no correlation between Cs-137 and C o-60 distribution.