Lead 210 or climatic changes at South Pole?

J. Sanak (1) , G. Lambert (1)

1 Centre des Faibles Radioactivités

The 21øpb concentration has been measured in 92 adjacent firn samples collected at the South Pole along a 18 m depth profile. The decay analysis shows that significant changes happened around 1920 and 1954 either in the accumulation rate or in the 21 0pb content of the new fallen snow.

Domaines: Océan, Atmosphère; Interfaces continentales, environnement

J. Sanak, G. Lambert. Lead 210 or climatic changes at South Pole?. Geophysical Research Letters, 1977, 4 (9), pp.357-359. ⟨10.1029/GL004i009p00357⟩. ⟨hal-03408317⟩