Seasonal 7Be and 137Cs activities in surface air before and after the Chernobyl event.

@article{Kulan2006Seasonal7A,
  title={Seasonal 7Be and 137Cs activities in surface air before and after the Chernobyl event.},
  author={Ahmet Kulan},
  journal={Journal of environmental radioactivity},
  year={2006},
  volume={90 2},
  pages={140-50}
}
  • Ahmet Kulan
  • Published 2006 in Journal of environmental radioactivity
Seasonal fluctuations of cosmogenic (7)Be (T(1/2)=53.4 days) and anthropogenic (137)Cs (T(1/2)=30 years) activities in surface air (aerosols) have been extracted from a long data record (1972-2000) at high latitude (56 degrees N-68 degrees N, Sweden). Normalization to weekly average values was used to control long-term trends so that cyclical trends could be investigated. Enhanced (7)Be activity was observed in spring and summer seasons and likely relates to the seasonal thinning of the… CONTINUE READING