[M-AG33] Dynamics of radionuclides emitted from Fukuchima Dai-ichi Nuclear Power Plant in the environment

[MAG33-P07] Impact on river water quality by the wildfire in non-decontamination forest in Fukushima Prefecture

*Takayuki KURAMOTO¹, Naoki NOMURA¹, Seiji HAYASHI², Hideki TSUJI², Hirotsugu ARAI¹ (1.Fukushima Prefectural Centre for Environmental Creation, 2.National Institute for Environmental Studies)

Keywords:wildfire, radiocesium

In April 2017, the wildfire occurred in Namie Town, Fukushima Prefecture. The area is included in the difficult-to-return zone due to TEPCO’s Fukushima Dai-ichi Nuclear Power Plant accident in 2011. Because forest is not subject to decontamination, it is possible that river water quality is affected by changes of ¹³⁷Cs dynamics in catchment after the wildfire. Therefore, we investigate the change of outflow of ¹³⁷Cs from the catchment to evaluate the influence of wildfire on the change of river water quality. In this paper, we report the results of ¹³⁷Cs and major ion concentrations in the river waters in the study site.