2013.4 - 2014.3 Yearbook of NILIM

Research Summary


River Department
Reference Number Y130201
Title Research on the measurement and behavior of radioactive material in the river basin
Start-End Date 2010.4-2014.3
Division River Division, River Department
Author Head, Atsushi HATTORI
Senior Researcher, Keigo NAKAMURA
Researcher, Hiroyuki SUZUKI
Guest Research Engineer, Yoshiyuki MAEDA
Summary After the Great Eastern Earthquake, a lot of radioactive material was released from the Fukushima Nuclear Power Plant. As for river managers, it is important to understand the movement of the radioactive material. In this study we collected and analyzed the results or information of the field surveys, researches and technological development on radioactive material mainly conducted by the Ministry of Environment (MOE), Ministry of Education, Culture, Sports, Science and Technology (MEXT), and universities. The results illustrate that concentration of radioactive cesium has correlation with suspended solid (SS) and turbidity, and that of lakes showed higher value than that of rivers.