Multidisciplinary and Interdisciplinary (M)
Session Sub-category Applied Geosciences(AG)
Session ID M-AG34
Title Radioisotope migration: New Development of Environmental Dynamics Research on the 1FNPS Accident
Short Title Radioisotope migration
Main Convener Name Daisuke Tsumune
Affiliation University of Tsukuba
Co-Convener 1 Name Yoshio Takahashi
Affiliation Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo
Co-Convener 2 Name Akira Kirishima
Affiliation Tohoku University
Co-Convener 3 Name Hiroaki Kato
Affiliation Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba
Session Language 
J
Scope 
13 years have passed since the accident at the Tokyo Electric Power Company (TEPCO) Fukushima Daiichi Nuclear Power Station (1FNPS), which was triggered by the Great East Japan Earthquake and tsunami. The environmental dynamics process of radionuclides released by the 1F NPP has been revealed, but there are still many issues to be solved, such as the migration process across sphere. It is important to understand the chemical element processes in the migration process across the sphere for new development on the environmental dynamics study of the 1F NPP accident. Furthermore, in addition to radioactive cesium, which has been the main target, it is necessary to combine the understanding of the dynamics of rare long-lived nuclides and natural radioactive nuclides, and to organize them as permanently available radioisotope tracers. In addition, it is desirable to expand the sphere and the time scale by collaborating with research on geological disposal of radioactive waste. More scientific understanding and discussion of the recent ocean discharge of ALPS treated water is desired.
In this session, we would like to summarize our research activities to date and deepen the discussion on cross-disciplinary research issues for new developments in the study of environmental dynamics of the Fukushima nuclear accident.
Presentation Format Oral and Poster presentation
Invited Authors Yuichi Onda (Center for Research on Isotopes and Environmental Dynamics, University of Tsukuba)
Mizuo Kajino (Meteorological Research Institute)
Alexandre CAUQUOIN (Institute of Industrial Science, The University of Tokyo, Kashiwa, Japan.)
Time Presentation No Title Presenter
Oral Presentation May 31 AM2
10:45 - 11:00 MAG34-01 Numerical and observational assessment of the impact of giant aerosol resuspension on radio-cesium deposition in winter in Fukushima Mizuo Kajino
11:00 - 11:15 MAG34-02 Effects of shallow groundwater runoff on Cs-137 discharge flux from forest headwater catchment Hiroaki Kato
11:15 - 11:30 MAG34-03 Identifying Cesium Discharge to the Ocean from Fukushima Daiichi NPP through Leaked Tritium Analysis Yuichi Onda
11:30 - 11:45 MAG34-04 Simulation of tritium releases into the ocean from the Fukushima Daiichi Nuclear Power Plant Alexandre CAUQUOIN
11:45 - 12:00 MAG34-05 The forefront of uranium speciation research: speciation of trace uranium in the environment by advanced X-ray
spectroscopy 		Takumi Yomogida
Presentation No Title Presenter
Poster Presentation May 31 PM3
MAG34-P01 Downward migration of 137Cs as a self-cleansing process in forest ecosystems in Fukushima Junko Takahashi
MAG34-P02 Evaluation of preferential flow on the spatial distribution of 137Cs in cedar forest soils in Fukushima Prefecture. Shunsuke Mishima
MAG34-P03 Model Development for Elucidation of Cs-137 Adsorption and Desorption Process in River Bottom Sediment in Fukushima Prefecture Naoyuki Wada
MAG34-P04 Effect of water quality on the dynamics of dissolved radioactive Cs in river water from forested headwaters to downstream Tomura Kosuke
MAG34-P05 Mechanism of dissolved-form 137Cs runoff from forest headwater catchment Yutaro Nagata
MAG34-P06 Reproduction of radiocesium dynamics in a dam lake by a numerical model considering desorption from bottom sediment Hideki Tsuji
MAG34-P07 Variations in 137Cs concentrations in river and coastal seawater during high-flow events Yoshifumi Wakiyama
MAG34-P08 Estimation of riverine export Cesium-137 fluxes to the marine environment Shun Satoh
MAG34-P09 Improving the estimation of direct release rates from the Fukushima Daiichi Nuclear Power Plant accident using a higher resolution oceanic dispersion model Daisuke Tsumune