It has been found that along with the decontamination progress and the decay of radioactive materials, the daily life air dose is lower than immediately after the nuclear accident. The Department of Environmental Dynamics Investigation conducts surveys on environmental dynamics such as the distribution and migration of radioactive materials in a daily life environment.
As a radiation monitoring system has been put in place in Fukushima Prefecture, it is now possible to obtain ample information on radiation doses in a daily life environment. However, the distribution and migration of the radioactive substances in the environment surrounding people such as undeveloped woodlands and forests near populated areas remains unresolved. For example, if radioactive substances deposited in nearby woodlands and forests are re-scattered by the wind, spill into the ground, rivers, and then flow out into the ocean, the living area could be affected in the future.
From this perspective, the Department of Environmental Dynamics Investigation is now investigating and researching the environmental dynamics of radioactive materials, making sure to elucidate and review the impact of the migration pathway and the radioactive materials in the environment of the local communities. We are currently conducting investigations focusing on the environmental dynamics of radioactive cesium in the forests and the living areas.