Mechanism of super(7)Be scavenging from the atmosphere through precipitation in relation to seasonal variations in Rokkasho Village, Aomori Prefecture, Japan

• Published in: Journal of radioanalytical and nuclear chemistry 2007-07, Vol.273 (1), p.171-175
• Main Authors: Hasegawa, H, Akata, N, Kawabata, H, Chikuchi, Y, Sato, T, Kondo, K, Inaba, J
• Format: Article
• Language: English
• ISSN: 0236-5731
• DOI: 10.1007/s10967-007-0731-y

super(7)Be deposition fluxes and atmospheric concentrations were measured at Rokkasho Village, Aomori Prefecture, Japan, from 2000 to 2005. It was confirmed that the super(7)Be deposition fluxes were minimum in summer, and the fallout maximizes in winter. The atmospheric concentration of super(7)Be was especially low in summer, and high in the other three seasons. A positive correlation was observed between the amount of precipitation and super(7)Be deposition. Clear seasonal differences were evident among the ratios of super(7)Be deposition flux to precipitation amounts in the four seasons. The ratios were especially high in winter, higher than those in the other three seasons. super(7)Be deposition flux was estimated by a simple simulation model using atmospheric super(7)Be concentrations and local meteorological data. As a result, the estimated deposition value was relatively lower than the measured value in winter.