[M-AG38_2AM2] Dynamics of radionuclides emitted from Fukuchima Dai-ichi Nuclear Power Plant in the environment

Fri. May 2, 2014 11:00 AM - 12:45 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:Kimikazu Sasa(Faculty of Pure and Applied Sciences, University of Tsukuba)

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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11:00 AM - 11:15 AM

[MAG38-08] The applicability of lichens as indicator of radiocaesium fall-out following the Fukushima Daiichi nuclear accident

*Terumi DOHI¹, Yoshihito OHMURA², Hiroyuki KASHIWADANI¹, Kenso FUJIWARA¹, Kazuki IIJIMA¹ (1.Japan Atomic Energy Agency, 2.National Museum of Nature and Science)

11:15 AM - 11:30 AM

[MAG38-09] Estimation of radioactive cesium translocation by litterfall, stemflow and throughfall in the forest of Fukushima

*Izuki ENDO¹, Nobuhito OHTE¹, Kohei ISEDA¹, Atsushi HIROSE¹, Natsuko KOBAYASHI¹, Keitaro TANOI¹ (1.The University of Tokyo)

11:30 AM - 11:45 AM

[MAG38-10] Effect of Radiocesium Transfer on Ambient Dose Rate in Forest Environment

*Hiroaki KATO¹, Yuichi ONDA¹, Nicolas LOFFREDO¹, Keigo HISADOME², Ayumi KAWAMORI³ (1.Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 2.Asia Air Survey Co., LTD., 3.Masters Program of Environmental Sciences, University of Tsukuba)

11:45 AM - 12:00 PM

[MAG38-11] Three different structures of radionuclide ratios on the surface soil in the northwestern area from the FDNPP

*Yukihiko SATOU¹, Keisuke SUEKI¹, Kimikazu SASA¹, Tetsuya MATSUNAKA¹, Nao SHIBAYAMA¹, Tsutomu TAKAHASHI¹, Norikazu KINOSHITA² (1.AMS Group, University of Tsukuba, 2.Institute of Technology, Shimizu Corporation)

12:00 PM - 12:15 PM

[MAG38-12] Depth profiles of ¹²⁹I and ¹³⁷Cs in soil before and after the FDNPP accident

*Tetsuya MATSUNAKA¹, Kimikazu SASA¹, Keisuke SUEKI¹, Tsutomu TAKAHASHI¹, Masumi MATSUMURA¹, Yukihiko SATOU¹, Nao SHIBAYAMA¹, Jun-ichi KITAGAWA², Norikazu KINOSHITA³, Hiroyuki MATSUZAKI⁴ (1.University of Tsukuba, 2.High Energy Accelerator Research Organization, 3.Shimizu Corporation, 4.The University of Tokyo)

12:15 PM - 12:30 PM

[MAG38-13] Distribution of ¹²⁹I in the environment released from the FDNPP accident and estimation of ¹³¹I/¹²⁹I ratio

*Kimikazu SASA¹, Masumi MATSUMURA¹, Keisuke SUEKI¹, Tsutomu TAKAHASHI¹, Tetsuya MATSUNAKA¹, Yukihiko SATOU¹, Nao SHIBAYAMA¹, Norikazu KINOSHITA², Kenji NISHIHARA³, Hiroyuki MATSUZAKI⁴ (1.University of Tsukuba, 2.Shimizu Corp., 3.Japan Atomic Energy Agency, 4.The University of Tokyo)

12:30 PM - 12:45 PM

[MAG38-14] Desorption behavior of intrinsic cesium in smectite: Effect of aggregation on the cesium fixation in clay particles

*Keisuke FUKUSHI¹, Haruka SAKAI², Taeko ITONO³, Akihiro TAMURA³, Shoji ARAI³ (1.Institute of Nature and Environmental Technology, Kanazawa University, 2.College of Science and Engineering, Kanazawa University, 3.Graduate School of Natural Science and Technology, Kanazawa University)