https://doi.org/10.1051/epjconf/201715308003
Temporal Change of Environmental Contamination Conditions in Five Years after the Fukushima Accident
Japan Atomic Energy Agency, Fukushima Environmental Safety Center, 2-2-2 Uchisaiwai-cho, Chiyoda-ku, Tokyo 100-8577, Japan
a Corresponding author: saito.kimiaki@jaea.go.jp
Published online: 25 September 2017
The temporal change of environmental contamination conditions after the Fukushima accident have been clarified based on large-scale environmental monitoring data repeatedly obtained in the 80 km zone. The decreasing tendency of air dose rates was confirmed to obviously depend on land uses. In human-related diverse environments the air dose rates have decreased much faster than the physical decay of radiocesium. The horizontal movement of radiocesium in undisturbed fields were found to be generally quite small, though it has gradually penetrated into the deeper parts of the ground.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
