Impact of the decontamination works on the riverine transport of sediment and radiocaesium in a rive affected by the TEPCO's Fukushima Daiichi Nuclear Power Plant Accident
Abstract
Radiocaesium from the accident of TEPCO's Fukushima Daiichi Nuclear Power Plant in March 2011 was deposited in the eastern part of Japan and has been transported through rivers in the surrounded area. In Fukushima prefecture, measures such as evacuation of residents, prohibition of agricultural activities and decontamination works were conducted based on the air dose rates. Although the decontamination works, which conducted from 2013 to 2016, reduced the air dose rate at the target sites, the impact on the riverine transport of sediment and radiocaesium has not been evaluated sufficiently. In this study, based on the long-term monitoring between 2011 to 2018, we investigated the change in the riverine transport of sediments and radiocaesium among before, during and after the decontamination works in the upper part of the watershed.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.H41J1833T
- Keywords:
-
- 0414 Biogeochemical cycles;
- processes;
- and modeling;
- BIOGEOSCIENCES;
- 0432 Contaminant and organic biogeochemistry;
- BIOGEOSCIENCES;
- 1834 Human impacts;
- HYDROLOGY;
- 1880 Water management;
- HYDROLOGY