[2C01-09] Fukushima 1

11:30 AM - 11:45 AM JST(2:30 AM - 2:45 AM UTC)

[2C09] Investigation on distribution of radioactive substances in Fukushima(4) Effect of thinning on the spatial distribution of 137Cs in a cedar forest soils in Minamisoma

*Shunsuke Mishima¹, Junko Takahashi¹, Yuichi Onda¹ (1. Univ. of Tsukuba)

Keywords:

Cs-137,The Fukushima Daiichi Nuclear Power Plant,preferential flow,saturated hydraulic conductivity

This study aimed to clarify the effect of preferential flow on the spatial distribution of ¹³⁷Cs in soil by investigating ¹³⁷Cs concentration and saturated hydraulic conductivity in a cedar plantation in Minamisoma. The results showed a positive correlation between ¹³⁷Cs concentration and soil physico-chemical properties such as saturated hydraulic conductivity, suggesting that the pathway of preferential flow may not change significantly after 11 years.