Masakazu OTA

Dynamics of radiocaesium in forests deposited by the Fukushima Daiichi Nuclear Power Plant accident; Long-term monitoring and modelling approaches

Hashimoto Shoji*, Tanaka Taku*, Komatsu Masabumi*, Gonze M.-A.*, Sakashita Wataru*, Kurikami Hiroshi, Nishina Kazuya*, Ota Masakazu, Ohashi Shinta*, Calmon P.*, Coppin F.*, Imamura Naohiro*, Hayashi Seiji*, Hirai Keizo*, Hurtevent P.*, Koarashi Jun, Manaka Takuya*, Miura Satoru*, Shinomiya Yoshiki*, Shaw G.*, Thiry Y.*

5th International Conference on Radioecology \& Environmental Radioactivity
JAEA's modeling studies on radionuclides transport in the terrestrial environment

Ota Masakazu, Terada Hiroaki, Koarashi Jun, Nagai Haruyasu

2021 International Symposium on the Environmental Dynamics of Radionuclides and the Biological Effects of Low Dose-rate Radiation
Development of a new sampler for tritium measurement in the infiltrated soil water

Kakiuchi Hideki*, Tanaka Masahiro*, Fukutani Satoshi*, Sugihara Shinji*, Hirao Shigekazu*, Momoshima Noriyuki*, Tamari Toshiya*, Shima Nagayoshi*, Atarashi-Andoh Mariko, Furukawa Masahide*, Ishimine Akinobu*, Nakasone Shunya*, Akata Naofumi*, Ota Masakazu, Takahashi Tomoyuki*, Yokoyama Sumi*

29th International Toki Conference on Plasma and Fusion Research (ITC-29)
Improvement of environmental tritium behavior model; Calculation of OBT concentration in plants using the MOGRA code

Yokoyama Sumi*, Takahashi Tomoyuki*, Ota Masakazu, Kakiuchi Hideki*, Sugihara Shinji*, Hirao Shigekazu*, Momoshima Noriyuki*, Tamari Toshiya*, Shima Nagayoshi*, Atarashi-Andoh Mariko, Fukutani Satoshi*, Nakasone Shunya*, Nakamura Kaori*, Furukawa Masahide*, Akata Naofumi*, Tanaka Masahiro*

29th International Toki Conference on Plasma and Fusion Research (ITC-29)
Studies on the soil carbon storage and its response to the climate change

Nagai Haruyasu, Koarashi Jun, Atarashi-Andoh Mariko, Ota Masakazu, Nagano Hirohiko

アジア原子力協力フォーラム(FNCA)気候変動科学オープンセミナー
Updating source term and atmospheric dispersion simulations for the dose reconstruction in Fukushima Daiichi Nuclear Power Station accident

Nagai, H, Terada, H, Tsuzuki, K, Katata, G, Ota, M, Furuno, A, Akari, S

13th International Conference on Radiation Shielding (ICRS-13) and 19th Topical Meeting of the Radiation Protection \& Shielding Division (RPSD 2016), Oct, 2016
Improvement of atmospheric dispersion simulation and reconstruction of source term and atmospheric dispersion processes

Nagai, H, Terada, H, Tsuzuki, K, Katata, G, Ota, M, Furuno, A, Kadowaki, M, Akari, S

日本放射線影響学会第59回大会, Oct, 2016
Field testing and inter-comparison of advanced tritium transfer models

Korolevych, V, Le-Dizes-Maurel, S, Kwamena, N. O, Ota, M, Aulagnier, C, Patryl, L

11th International Conference on Tritium Science and Technology (TRITIUM 2016), Apr, 2016
Process-based modeling for mountain pasture dynamics in unusual warm and long snow-free wintertime

Katata, G, Grote, R, Zeeman, M.J, Mauder, M, Ota, M, Lu, H, Kiese, R

日本地球惑星科学連合2015年大会, May, 2015
Updating source term and an atmospheric transport, dispersion and deposition model, WSPEEDI

Nagai, H, Terada, H, Tsuzuki, K, Ota, M, Furuno, A, Akari, S, Katata, G

15th International Congress of Radiation Research (ICRR 2015), May, 2015
Detailed assessments of distribution of radionuclides discharged from a nuclear plant; Transfer of $^{14}$C discharged from the Rokkasho reprocessing plant to rice plants

Ota, M, Nagai, H, Katata, G, Terada, H

日本原子力学会2014年秋の大会, Sep, 2014
Detailed source term estimation of atmospheric release during the Fukushima Dai-ichi Nuclear Power Plant accident by coupling atmospheric and oceanic dispersion models

Katata, G, Chino, M, Terada, H, Kobayashi, T, Ota, M, Nagai, H, Kajino, M

European Geosciences Union General Assembly 2014, Apr, 2014
Source term estimation during the Fukushima Dai-ichi Nuclear Power Plant accident by coupling atmospheric and oceanic dispersion models

Katata, G, Chino, M, Terada, H, Kobayashi, T, Ota, M, Nagai, H, Kajino, M

日本原子力学会2014年春の年会, Mar, 2014
Detailed source term estimation and atmospheric dispersion analysis for the Fukushima Dai-ichi Nuclear Power Plant accident

Katata, G, Chino, M, Ota, M, Nagai, H, Terada, H, Kajino, M

94th American Meteorological Society Annual Meeting, Feb, 2014
Local-scale atmospheric dispersion analysis near the plant in early phase of the Fukushima Dai-ichi Nuclear Power Plant accident

Katata, G, Chino, M, Terada, H, Nagai, H, Ota, M

日本原子力学会2013年春の年会, Mar, 2013
Dispersion simulations of radioactive materials due to the Fukushima Dai-ichi Nuclear Power Plant accident

Nagai, H, Katata, G, Ota, M, Ina, T, Kakefuda, T, Endo, A

日本原子力学会2013年春の年会, Mar, 2013
Reconstruction of the spatiotemporal distribution of radioactive materials discharged from the Fukushima Dai-ichi Nuclear Power Plant by atmospheric dispersion simulations

Nagai, H, Katata, G, Ota, M, Ina, T, Kakefuda, T, Endo, A

2nd NIRS Symposium on Reconstruction of Early Internal Dose in the TEPCO Fukushima Daiichi Nuclear Power Station accident, Jan, 2013
Root HTO uptake as an important process controlling land surface tritium dynamics after an acute HT deposition; A Numerical experiment

Ota, M, Nagai, H, Koarashi, J

日本原子力学会2012年春の年会, Mar, 2012
Analysis on the atmospheric dispersion of radionuclides discharged from the TEPCO's Fukushima Daiichi Nuclear Power Plant

Nagai, H, Terada, H, Katata, G, Nakayama, H, Ota, M, Chino, M

日本原子力学会2012年春の年会, Mar, 2012
Analysis on the atmospheric dispersion processes

Nagai, H, Chino, M, Terada, H, Katata, G, Nakayama, H, Ota, M

公開ワークショップ「福島第一原子力発電所事故による環境放出と拡散プロセスの再構築」, Mar, 2012

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土壌有機炭素モデルで解き明かす、森林伐採に対する土壌中貯留炭素動態の長期応答

科学研究費助成事業, 基盤研究(C), 日本学術振興会, Apr, 2020 - Mar, 2023

太田雅和, 小嵐淳, 高木健太郎, 梁乃申

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