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Journal of Radioanalytical and Nuclear Chemistry

, Volume 275, Issue 2, pp 299–307 | Cite as

Variation of 7Be concentration in surface air at Nagano, Japan

  • H. Muramatsu
  • S. Yoshizawa
  • T. Abe
  • T. Ishii
  • M. Wada
  • Y. Horiuchi
  • R. Kanekatsu
Article

Abstract

The concentration of 7Be in surface air at Nagano City has been measured during the period from August 2000 to March 2005. The average monthly concentrations of 7Be in surface air were in the range of 3.3–14 mBq/m3 with pronounced two peaks in spring and autumn. It took 30–40 hours to recover the 7Be concentrations observed before, once 7Be was washed out by wet precipitations. For a pronounced increase in the concentrations of 7Be found in winter, a low-pressure trough coming close to the Japanese Islands with high concentrations of 7Be is responsible under the characteristic distribution of atmospheric pressure around the Japanese Islands.

Keywords

Rainfall Event Aerosol Particle Deposition Velocity Japanese Island Gravitational Settling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    K. Megumi, T. Matsunami, N. Ito, S. Kiyoda, A. Mizohata, T. Asano, Geophys. Res. Lett., 27 (2000) 361.CrossRefGoogle Scholar
  2. 2.
    M. Abe, Aerosol Res., 10 (1995) 283 (in Japanese).Google Scholar
  3. 3.
    J. Sato, T. Doi, T. Segawa, S. Sugawara, Geochem. J., 28 (1994) 123.Google Scholar
  4. 4.
    H. Hötzl, G. Rosner, R. Winkler, Naturwissenschaften, 78 (1991) 215.CrossRefGoogle Scholar
  5. 5.
    R. J. Larsen, J. Environ. Radioact., 18 (1993) 85.CrossRefGoogle Scholar
  6. 6.
    T. Matsunami, K. Megumi, Radioisotopes, 43 (1994) 334 (in Japanese).Google Scholar
  7. 7.
    H. W. Feely, R. J. Larsen, C. G. Sanderson, J. Environ. Radioact., 9 (1989) 223.CrossRefGoogle Scholar
  8. 8.
    J. A. Young, W. B. Silker, Earth Planet. Sci. Lett., 50 (1980) 92.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  • H. Muramatsu
    • 1
  • S. Yoshizawa
    • 1
  • T. Abe
    • 1
  • T. Ishii
    • 1
  • M. Wada
    • 1
  • Y. Horiuchi
    • 1
  • R. Kanekatsu
    • 2
  1. 1.Department of Chemistry, Faculty of EducationShinshu UniversityNaganoJapan
  2. 2.Department of Applied Biology, Faculty of Textile Science and TechnologyShinshu UniversityNaganoJapan

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