[M-AG38_2PM1] Dynamics of radionuclides emitted from Fukuchima Dai-ichi Nuclear Power Plant in the environment

Fri. May 2, 2014 2:15 PM - 4:00 PM 501 (5F)

Convener:*Kazuyuki Kita(Faculty of Science, Ibaraki University), Yuichi Onda(Center for Research on Isotopes and Environmental Dynamics, University of Tsukuba), Teruyuki Nakajima(Atmosphere and Ocean Research Institute), Yasuhito Igarashi(Atmospheric Environment and Applied Meteorology Research Department, Meteorological Research Institute), Jun Matsumoto(Deaprtment of Geography, Tokyo Metropolitan University), Masatoshi Yamada(Institute of Radiation Emergency Medicine, Hirosaki University), Chisato Takenaka(Graduate School of Bioagricultural Sciences, Nagoya University), masayoshi yamamoto(Low Level Radioactivity Laboratory, Kanazawa University), jota kanda(Tokyo University of Marine Science and Technology), atsushi shinohara(Osaka university), Chair:Seiya Nagao(Institute of Nature and Environmental Technology, Kanazawa University)

The Great East Japan Earthquake caused the severe accident in TEPCO Fukushima dai-ichi nuclear power plant (FDNPP), leading to emission of huge amount of radionuclides to the environment. They have been transported and diffused by atmospheric motion, depositing them to soil and vegetation. Deposited radionuclides are dynamically shifted in the earth environment; atmosphere, soil, inland water, ocean, and ecosystem. To understand this dynamic shift in the environment and for the long-term prediction of the disaster by the radionuclides, investigation and discussion based on not only the earth sciences including ecology but also on the radiochemistry and other related sciences.In this session, various efforts to understand the dynamic behavior of radionuclides emitted from FDNPP accident in the earth system as well as to predict their influences on the environment. It is expected that this session will offer a good opportunity to discuss radionuclides in the earth environment from wide aspect and to exchange information in various research fields.

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2:15 PM - 2:30 PM

[MAG38-15] Evaluation of the migration of radiocesium based on chemical speciation

*Kazuya TANAKA¹, Qiaohui FAN², Hiroaki KONDO², Aya SAKAGUCHI², Yoshio TAKAHASHI² (1.ISSD, Hiroshima University, 2.Graduate School of Science, Hiroshima University)

2:30 PM - 2:45 PM

[MAG38-16] Radiocesium wash-off associated with soil erosion from various land uses after the Fukushima Dai-ichi NPP accident

*Yoshifumi WAKIYAMA¹, Yuichi ONDA¹, Kazuya YOSHIMURA², Hiroaki KATO¹ (1.Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 2.Headquaters of Fukushima Partnership Operations, IAEA)

2:45 PM - 3:00 PM

[MAG38-17] The distributed models to predict interannual changes in inventory and discharge of rCs from river basin

*Akihiko KONDOH¹, Yuichi ONDA² (1.CEReS, Chiba University, 2.CRiED, University of Tsukuba)

3:00 PM - 3:15 PM

[MAG38-18] Cs-134 and Cs-137 radioactivity of riverine suspended solids in the Abukuma River after the heavy rain in June 2012

*Seiya NAGAO¹, Masaki KANAMORI², Shinya OCHIAI¹, Seiichi TOMIHARA³, Masayoshi YAMAMOTO¹ (1.LLRL, INET, Kanazawa University, 2.Grad. School of NST, Kanazawa University, 3.Environmental Aquarium Aquamarine Fukushima)

3:15 PM - 3:30 PM

[MAG38-19] Transportation of radiocesium through rivers in Fukushima

*Keisuke TANIGUCHI¹, Kazuya YOSHIMURA², Hugh SMITH³, Will BLAKE⁴, Yoshio TAKAHASHI⁵, Aya SAKAGUCHI⁵, Masayoshi YAMAMOTO⁶, Yuichi ONDA¹ (1.Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 2.JAEA, 3.University of Liverpool, 4.School of Geography, Earth and Environmental Sciences, Plymouth University, 5.Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 6.Low Level Radioactivity Laboratory, Kanazawa University)

3:30 PM - 3:45 PM

[MAG38-20] A sediment transport model for analyzing the environmental dynamics of radionuclides in estuarine and coastal oceans

*Yusuke UCHIYAMA¹, Takafumi YAMANISHI¹, Daisuke TSUMUNE², Yasumasa MIYAZAWA³ (1.Kobe University, 2.Central Research Institute of Electric Power Industry (CRIEPI), 3.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

3:45 PM - 4:00 PM

[MAG38-21] Distribution of radionuclides in the surface seawater developed by aerial radiological survey

*Yayoi INOMATA¹, Michio AOYAMA², Katsumi HIROSE³, Yukihisa SANADA⁴, Tatsuo TORII⁴, Takaki TSUBONO⁵, Daisuke TSUMUNE⁵, Masatoshi YAMADA⁶ (1.Asia Center for Air Pollution Research, 2.Fukushima University, 3.Sophia University, 4.Japan Atomic Energy Agency, 5.Central Research Institute of Electric Power Industry, 6.Hirosaki University)