Otosaka Shigeyoshi

オトサカシゲヨシ | Otosaka Shigeyoshi

Affiliation and department：
Job title：准教授

Research field (3)： Analytical chemistry , Space and planetary science , Environmental dynamics

Research keywords (7)： Biogeochemical cycles , Environmental radioactivity , Trace Elements , Seabed sediment , Sinking particles , Japan Sea , Pacific Ocean

Research theme for competitive and other funds (10)：

2024 - 2029 Geosphere-hydrosphere-biosphere connected by submarine mud volcanism: Diffusion processes of deep life and carbon, and their effects on the ocean
2022 - 2025 Fresh water spreads offshore far away from coast and impacts on primary production
2020 - 2023 Construction of a model for the diffusion and circulation of deep subsurface life and carbon to the ocean via submarine mud volcanism
2019 - 2023 Behavior and function of dissolved organic matter in the northwestern Pacific Ocean discovered by radiocarbon age
2016 - 2019 Development of versatile analysis system for dissolved organic radiocarbon in seawater

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Papers (70)：

Batdulam Battulga, Takahiro Nakanishi, Mariko Atarashi-Andoh, Shigeyoshi Otosaka, Jun Koarashi. Biofilm-mediated interactions between plastics and radiocesium in coastal environments. Environmental Science and Pollution Research. 2024
Yosuke Yamada, Akiko Ebihara, Hideki Fukuda, Shigeyoshi Otosaka, Satoshi Mitarai, Toshi Nagata. Functions of extracellular polymeric substances in partitioning suspended and sinking particles in the upper oceans of two open ocean systems. Limnology and Oceanography. 2024
Shigeyoshi Otosaka, Yunxuan Hou, Masahide Wakita, Youhei Yamashita, Jun Nishioka, Hajime Obata, Yosuke Miyairi, Yusuke Yokoyama, Hiroshi Ogawa. Origin and Transport of Dissolved Organic Matter in the Northwestern Margin of the North Pacific Inferred from Radiocarbon Signatures. Journal of Coastal Research. 2024. 116. sp1
Yuhi Satoh, Shigeyoshi Otosaka, Takashi Suzuki, Takahiro Nakanishi. Factors regulating the concentration of particulate iodine in coastal seawater. LIMNOLOGY AND OCEANOGRAPHY. 2023
Estimation of Temporal Variation of Discharged Inventory of Radioactive Strontium 90Sr (89Sr) from Port of Fukushima Daiichi Nuclear Power Plant: Analysis of the Temporal Variation from the Accident to March 2022 and Evaluation of its Impacts on Fukushima Coast and Offshore Areas. Transactions of the Atomic Energy Society of Japan. 2023. 22. 119-139

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MISC (23)：

高田兵衛, 大槻あずさ, 佐藤俊, 乙坂重嘉, 戸田亮二, 西川淳, 剣持瑛行, 石倉明依, 山田萌々加, 新開祐介, et al. 福島沿岸海域における放射性核種の動態および生態系の環境応答KS-21-23,KS-22-14. 海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM). 2023. 2022
青野辰雄, 福田美保, 櫻田正宣, 高橋博路, 山崎慎之介, 神林翔太, 御園生敏治, 中西貴宏, 三浦ひかり, 西川淳, et al. 福島第一原発沖における海水と堆積物中の放射性セシウム濃度変動. 海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM). 2023. 2022
乙坂重嘉, 小畑元, 川口悠介, 矢部いつか, 荒巻能史, 和川拓, 帰山秀樹, 井上睦夫, 長尾誠也. Dynamics of marine particles revealed by natural radionuclides. 月刊海洋. 2023. 55. 3
乙坂重嘉, 小畑元, 川口悠介, 矢部いつか, 荒巻能史, 和川拓, 帰山秀樹, 井上睦夫, 長尾誠也. 日本海対馬暖流域における海洋構造の変化に対する化学環境の応答:粒子フラックスの変化とその要因. 海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM). 2023. 2022
青野辰雄, 西川淳, 乙坂重嘉, 高田兵衛, 御園生敏治, 中西貴宏, 三浦輝, 福田美保, 神林翔太, 櫻田正宣, et al. Variation of radiocaesium activity concentrations in marine environment around off Fukushima. KEK Proceedings (Web). 2022. 2022-2

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Education (4)：

- 2004 博士(地球環境科学)北海道大学
1998 - 2000 北海道大学大学院地球環境科学研究科博士課程(2000年3月退学)
1996 - 1998 北海道大学大学院地球環境科学研究科修士課程
1992 - 1996 Hokkaido University School of Fisheries Sciences

Work history (7)：

2024/04 - 現在 Ministry of Education, Culture, Sports, Science and Technology
2018/12 - 現在 The University of Tokyo Atmosphere and Ocean Research Institute
2015/07 - 2018/11 日本原子力研究開発機構原子力基礎工学研究センター研究主幹
2011/10 - 2015/06 日本原子力研究開発機構原子力基礎工学研究センター研究副主幹
2005/10 - 2011/09 日本原子力研究開発機構原子力基礎工学研究部門研究員

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Committee career (10)：

2021/04 - 現在日本海洋学会評議員
2020/10 - 現在日本学術会議地球惑星科学委員会SCOR分科会 GEOTRACES小委員会委員
2016/05 - 現在環境科学技術研究所排出放射能環境動態調査検討委員会委員
2015/04 - 現在日本海洋学会 Journal of Oceanography 編集委員
2012/05 - 現在日本海洋科学振興財団海洋放射能等検討委員会委員

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Awards (5)：

2024/03 - Editoral board of Journal of Nuclear Science and Technology, Atomic Energy Society of Japan JNST Most Popular Article Award 2023 Distribution, dynamics, and fate of radiocesium derived from FDNPP accident in the ocean
2019/04 - The Oceanographic Society of Japan 2019 Hidaka Outstanding-Publication Award Processes affecting long-term changes in 137Cs concentration in surface sediments off Fukushima
2015/04 - American Chemical Society Environmental Science & Technology first runner-up best paper in the Environmental Science category for 2014 Vertical and lateral transport of particulate radiocesium off Fukushima
2010/09 - Outstanding paper award Estimation of total amounts of anthropogenic radionuclides in the Japan Sea
2007/03 - 日本原子力学会第39回日本原子力学会賞「貢献賞」日本海の人工放射性核種分布マップの作成

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