Deposition of gamma-emitting nuclides in Japan after the reactor-IV accident at Chernobyl'
- 59 Downloads
The wet and dry deposition of gamma-emitting nuclides are presented for Tsukuba and eleven stations in Japan following the nuclear reactor accident at Chernobyl'. In Japan fallout from the reactor at Chernobyl' was first detected on May 3, 1986, a week after the accident. Abruptly high radioactive deposition, which mainly consists of131I,132I,103Ru,137Cs and134Cs, was observed in early May. The cumulative amount of131I,103Ru and137Cs in May at Tsukuba were 5854±838 Bq·m−2, 364±54 Bq·m−2 and 130±26 Bq·m−2 (decay was corrected to April 26), respectively. The monthly137Cs deposition in May corresponds to 2.5% of the cumulative137Cs deposition during the period from 1960 through 1982. Most of the Chernobyl' radioactivities, especially131I, are scavenged from the atmosphere by the wet removal process.
Unable to display preview. Download preview PDF.
- 2.Japan Meteorological Agency, Bulletin of the atmospheric radioactivity, 70 (1988), in press.Google Scholar
- 3.R. J. LARSEN, C. G. SANDERSON, W. RIVERA, M. ZAMICHIELI, USDOE Report EML-460 (1986) 1.Google Scholar
- 5.R. LEIFER, I. HELFER, K. MILLER, S. SILVESTRI, USDOE Report EML-460 (1986) 301.Google Scholar
- 6.International Atomic Energy Agency, Summary report on the post-accident review meeting on the Chernobyl' accident, Safety Series No. 75-INSAG-1, 1986.Google Scholar
- 7.Y. KATSURAGI, Papers in Meteorology and Geophysics, 33 (1983) 277.Google Scholar
- 8.Y. KATSURAGI, M. AOYAMA, Papers in Meteorology and Geophysics, 37 (1986) 15.Google Scholar