Japan Geoscience Union Meeting 2018

Presentation information

[JJ] Oral

H (Human Geosciences) » H-CG Complex & General

[H-CG27] Nuclear Energy and Geoscience

Thu. May 24, 2018 9:00 AM - 10:30 AM 301B (3F International Conference Hall, Makuhari Messe)

convener:Eiji Sasao(Tono Geoscience Center, Japan Atomic Energy Agency), Tsutomu Sato(Faculty of Engineering Hokkaido University), Ryuta Hataya(一般財団法人 電力中央研究所), Chairperson:Sato Tsutomu(Hokkaido University)

10:15 AM - 10:30 AM

[HCG27-06] Effects on environmental dynamics of radiocesium related to the wildfire in mountainous forest of the Abukuma Mountains, Fukushima

*Tadafumi Niizato1, Yoshito Sasaki1, Takayoshi Watanabe1, Katsuaki Mitachi1, Satomi Ito1, Takayuki Kuramoto2, Hirotsugu Arai2, Naoki Nomura2, Seiji Hayashi3, Masanori Tamaoki3 (1.Japan Atomic Energy Agency, 2.Fukushima Prefectural Centre for Environmental Creation, 3.National Institute for Environmental Studies)

Keywords:wildfire, radiocesium, mountainous forest, TEPCO's Fukushima Dai-ichi Nuclear Power Plant accident

137Cs released from the TEPCO’s Fukushima Dai-ichi Nuclear Power Plant accident has a long half-life of about 30 years, it is necessary to monitor the distribution and its radioecological impact over the long term. Mountainous forests, which accounts for about 70% of Fukushima Prefecture, tend to be a sink of radiocesium contamination rather than a source for the contamination of other ecosystems. An understanding of the environmental dynamics of radiocesium in various forest conditions is important issue under the situation which the return of evacuated residents is in progress.

In this paper, we report on the results of the field investigation into the 137Cs distribution and the 137Cs outflow in the mountainous forest of Fukushima, where the wildfire broke out in the spring of 2017.