Multidisciplinary and Interdisciplinary (M)
Session Sub-category Applied Geosciences(AG)
Session ID M-AG34
Title Radioisotope migration: Development from Environmental Dynamics Research on the F1NPS Accident
Short Title Radioisotope migration
Main Convener Name Daisuke Tsumune
Affiliation University of Tsukuba
Co-Convener 1 Name Naofumi Akata
Affiliation Hirosaki University
Co-Convener 2 Name Hiroaki Kato
Affiliation Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba
Co-Convener 3 Name Shigeyoshi Otosaka
Affiliation Atmosphere and Ocean Research Institute, The University of Tokyo
Session Language 
J
Scope 
13 years have passed since the accident at the Tokyo Electric Power Company (TEPCO) Fukushima Daiichi Nuclear Power Station (F1NPS), which was triggered by the Great East Japan Earthquake and tsunami. The environmental dynamics process of radionuclides released by the F1NPS 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 F1NPS 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 is desired for the ongoing oceanic discharge of ALPS treated water from the F1NPS.
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 in Radiation, Isotopes and Earth System Sciences, University of Tsukuba)
Takashi Suzuki (Japan Atomic Energy Agency)
Junko Takahashi (Center for Research in Radiation, Isotopes, and Earth System Sciences, University of Tsukuba)
Time Presentation No Title Presenter
Oral Presentation May 29 PM1
13:50 - 14:05 MAG34-01 New Insights into the Dissolution Mechanism of Dissolved Cs-137 in Headwater Catchments Yuichi Onda
14:05 - 14:20 MAG34-02 Dissolved Cs-137 discharge and the effect of hillslope groundwater in the headwater forest watershed Hiroaki Kato
14:20 - 14:35 MAG34-03 The Changes of 137Cs Runoff due to Littter Removal in Forest Headwater Catchmrnt Yutaro Nagata
14:35 - 14:50 MAG34-04 Eluchidation and Modeling of the Effects of Forest Management on Air Dose Rates Yusei Uehara
14:50 - 15:05 MAG34-05 Long-term trends in radionuclide concentrations in rivers across Europe originating from Chornobyl Yasunori Igarashi
Oral Presentation May 29 PM2
15:30 - 15:45 MAG34-06 Distribution and dynamics of dissolved organic radiocarbon in the Fukushima coast Shigeyoshi Otosaka
15:45 - 16:00 MAG34-07 Estimation of Pathways Based on the Temporal Variation of Oceanic 137Cs Derived from the Fukushima Daiichi Nuclear Power Plant Accident Munehiro Asao
16:00 - 16:15 MAG34-08 Variation in the distribution of radionuclide concentrations in the oceanic discharge of ALPS treated water Daisuke Tsumune
16:15 - 16:30 MAG34-09 Estimation of radionuclide source from the Fukushima Daiichi Nuclear Power Plant using 3H/137Cs ratio Nimish Sudhir Godse
16:30 - 16:45 MAG34-10 Distribution of iodine-129 concentrations in seawater around Fukushima after release of ALPS-treated water Takashi Suzuki
Presentation No Title Presenter
Poster Presentation May 29 PM3
MAG34-P01 Variations in 137Cs concentrations in river water and coastal seawater in a high-flow event on Abukuma river catchment Yoshifumi Wakiyama
MAG34-P02 Dynamics of 137 Cesium in water bodies of an urban area in Fukushima NOBUHIRO SUZUKI
MAG34-P03 Numerical Simulation of the Transfer of Radiocaesium in a River Keisuke Taniguchi
MAG34-P04 Factor affecting for apparent Kd in rivers of the Fukushima Prefecture Miho Fukuda
MAG34-P05 Relationship between the variation in Cs-137 inventory in soils due to the preferential flow and soil physicochemical properties Junko Takahashi
MAG34-P06 Transport of Cs-137 subducted into the North Pacific subtropical mode water at the end of March to the Sea of Japan Takaki Tsubono