137Cs and 134Cs as compounds of the radioactive release from the reactor catastrophy of Chernobyl on the 26.04.1986 were deposited into sediments of lakes in Schleswig-Holstein (Germany). Three years later, in autumn 1989, a sediment core was taken from the Großer Plöner See and the distribution of both caesium isotopes was determined. The radiocaesium profiles were dated by 210Pb. The radiocaesium nuclides from Chernobyl diffused into sediment layers which were deposited decades before the catastrophy. The activity of 137Cs from Chernobyl was higher than from the nuclear bomb fallout.

Values of age and caesium concentrations are approximate. BP refers to 1950.

Supplement to: Knof, Reinhard (1992): Die Verteilung von 137Cs und 134Cs des Kernkraftwerkunfalls von Tschernobyl im Sediment des Großen Plöner Sees. Meyniana, 44, 173-177