Japan Geoscience Union Meeting 2016

Presentation information

Print

Poster

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

[H-CG25] Nuclear Energy and Geoscience

Tue. May 24, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Eiji Sasao(Tono Geoscience Center, Japan Atomic Energy Agency), Tsutomu Sato(Faculty of Engineering Hokkaido University), Hidekazu Yoshida(Nagoya University Museum)

5:15 PM - 6:30 PM

[HCG25-P10] Estimate of variation of radioactive cesium sedimentation in a soil saving dam with the 3D laser scanner

*Takayoshi Watanabe1, Takuya ohyama1, yasuo ishii1, Tadafumi Niizato1, hironobu abe1, katsuaki mitachi1, yoshito sasaki1 (1.Japan Atomic Energy Agency)

Keywords:accident at the Fukushima Daiichi Nuclear Power Station, 3D laser scanner

We investigate a soil saving dam to estimate amount of radioactive cesium flowing out from forest. A target soil saving dam is located in Abukuma mountain area. We measured amount of sediment with 3D laser scanner and calculated change of amount of sediment. As a result, variation of sediment are 0.5 m3 form Aug. 9, 2013 to Dec. 3, 2014, 0.1 m3 from Dec. 3, 2014 to Sep. 2, 2015 and 1.8 m3 from Sep. 2, 2015 to Dec. 1, 2015. Amount of cesium sedimentation is estimated 720 MBq.