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Evaluation of atmospheric concentration of radionuclides by extensively analyzing environmental data

Research Project

Project/Area Number 17K07008
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Nuclear engineering
Research InstitutionNagoya University

Principal Investigator

Yamazawa Hiromi  名古屋大学, 工学研究科, 教授 (70345916)

Co-Investigator(Kenkyū-buntansha) 森泉 純  名古屋大学, 工学研究科, 准教授 (90303677)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords原子力事故 / 環境放射能 / モニタリングポスト / NaI波高分布 / 大気中濃度 / 大気中動態 / 物理性状 / NaI検出器波高分布 / 放射性核種 / 福島原発事故 / 放射性核種濃度 / NaI検出器 / 放射性核種大気中濃度 / 環境動態
Outline of Final Research Achievements

A method for estimating the depth profiles of Cs-134 and 137 utilizing the Compton scattering component was developed and validated. A method for estimating he atmospheric concentration of multiple nuclides including I-131 and Xe-133 from gamma-ray pulse height distributions was developed and was applied to the plumes observed at the central part of Ibaraki Prefecture at the early stage of the nuclear accident to obtain their concentrations and nuclide composition.
A model describing the atmospheric behavior of I-131, 132 and Te-132 was developed, in which gaseous-organic, gaseous-inorganic and particulate components are separately described with their interactions. The property of the nuclides on release and the deposition velocity during the atmospheric transport were obtained by applying this model to observed atmospheric concentration data

Academic Significance and Societal Importance of the Research Achievements

常時測定されているデータあるいは容易に測定可能なデータから従来より詳細な情報を得るための学術的な基盤が作られた。これにより、現在でも内部被ばく評価で課題とされている福島原発事故初期の主要核種大気中濃度データを拡充することができた。また、詳細なモデル化により、事故初期のプルーム動態に関してこれまでほとんど知見がなかった物理性状別の動態評価が可能となり、大気輸送モデルを用いた内部被ばく評価で必要な放出時点の物理性状や輸送過程での乾性沈着に関するパラメータが評価された。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (20 results)

All 2020 2019 2018 2017

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (14 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results) Book (1 results)

  • [Journal Article] Recent Understanding on the Release of Radionuclides and Their Behavior in the Atmosphere2020

    • Author(s)
      Yamazawa Hiromi、Igarashi Yasuhito
    • Journal Title

      RADIOISOTOPES

      Volume: 69 Issue: 1 Pages: 19-30

    • DOI

      10.3769/radioisotopes.69.19

    • NAID

      130007785025

    • ISSN
      0033-8303, 1884-4111
    • Year and Date
      2020-01-15
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spatial distributions of atmospheric concentrations of radionuclides on 15 March 2011 discharged by the Fukushima Dai-Ichi Nuclear Power Plant Accident estimated from NaI(Tl) pulse height distributions measured in Ibaraki Prefecture2020

    • Author(s)
      Moriizumi Jun、Oku Atomu、Yaguchi Naoki、Kuwahara Yu、Yamazawa Hiromi
    • Journal Title

      Journal of Nuclear Science and Technology

      Volume: 57 Issue: 5 Pages: 495-513

    • DOI

      10.1080/00223131.2019.1699191

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intercomparison of numerical atmospheric dispersion prediction models for emergency response to emissions of radionuclides with limited source information in the Fukushima Dai-ichi Nuclear Power Plant accident2019

    • Author(s)
      Iwasaki, T., T. T. Sekiyama, T. Nakajima, A. Watanabe, Y. Suzuki, H. Kondo, Y. Morino, H. Terada, H. Nagai, M. Takigawa, H. Yamazawa, D. Quelo, A. Mathieu
    • Journal Title

      Atmospheric Environment

      Volume: 214 Pages: 116830-116830

    • DOI

      10.1016/j.atmosenv.2019.116830

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] モニタリングと大気拡散計算による原子力事故影響の把握とその事故対応への反映2018

    • Author(s)
      山澤弘実
    • Journal Title

      学術の動向

      Volume: 2018.3 Pages: 30-34

    • NAID

      130007420555

    • Related Report
      2017 Research-status Report
  • [Journal Article] 福島第一原発事故の大気・海洋環境科学的研究の現状-事故の何が分かったか,事故から何が分かったか2018

    • Author(s)
      青山道夫,山澤弘実,永井晴康
    • Journal Title

      日本原子力学会誌

      Volume: 60 Pages: 115-120

    • NAID

      130007827535

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 2011年3月15日早朝に南下したプルームの大気中濃度分布と核種組成の特徴2019

    • Author(s)
      山澤弘実、矢口直樹、森泉 純、桑原雄宇
    • Organizer
      日本原子力学会2019年秋の大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 地上NaI(TI)波高分布による放射性セシウムの地表面濃度および土壌中濃度深度分布の同時推定法2019

    • Author(s)
      森泉 純、市川 寿、平尾茂一、山澤弘実
    • Organizer
      日本原子力学会2019年秋の大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 東電福島原発事故での大気中I-132及びTe-132の動態解析2019

    • Author(s)
      西山暉,紙田峻輔,山澤弘実,森泉純
    • Organizer
      日本原子力学会中部支部 第51回研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 福島原発事故起因の大気中ヨウ素131の性状別動態解析2019

    • Author(s)
      紙田峻輔、山澤弘実、森泉 純
    • Organizer
      日本原子力学会2019年秋の大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Evaluation of Atmospheric Concentrations of Fukushima Daiichi NPP 1-131 and Other FP Nuclides from Nai Pulse Height Distribution Data2018

    • Author(s)
      H. Yamazawa, A. Oku, N. Yaguchi, J. Moriizumi and Y. Sato
    • Organizer
      9th International Conference on High Level Environmental Radiation Areas
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 原子力事故を対象とした大気拡散モデルの特性評価2018

    • Author(s)
      山澤弘実、佐藤陽祐
    • Organizer
      日本原子力学会2018年秋の大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 波高分布を用いた土壌中放射能濃度の深度分布推定法の検討2018

    • Author(s)
      市川 寿、山澤弘実、森泉 純、平尾茂一
    • Organizer
      日本原子力学会2018年秋の大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 原子力事故データの総合解析・事故時の有害物質大気中動態評価法の高度化2018

    • Author(s)
      山澤弘実
    • Organizer
      第59回大気環境学会年会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 原子力防災の科学技術2018

    • Author(s)
      山澤弘実
    • Organizer
      日本学術会議 原子力総合シンポジウム
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 福島第1原子力発電所事故起源の放射性物質を対象とした大気拡散モデルの特性評価2018

    • Author(s)
      佐藤陽祐、山澤弘実、足立振一郎
    • Organizer
      日本気象学会2018年度秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] NaI(Tl)波高分布からの放射性物質大気中濃度推定法の検討2018

    • Author(s)
      山澤 弘実,奥 安人夢,森泉 純
    • Organizer
      日本原子力学会2018年春の年会
    • Related Report
      2017 Research-status Report
  • [Presentation] Improvements and limitations on understanding of atmospheric processes of Fukushima Daiichi NPS radioactivity2017

    • Author(s)
      Hiromi Yamazawa, Yuta Terasaka, Kenta Mizutani, Hiroki Sugiura, Shigekazu Hirao
    • Organizer
      EGU General Assembly 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Estimation of atmospheric concentration of radionuclides from pulse height distribution measured by monitoring station NaI(Tl) detectors2017

    • Author(s)
      Hiromi Yamazawa, Atomu Oku, Kyosuke Saito, Jun Moriizumi
    • Organizer
      ISORD 8
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] モニタリングと大気拡散計算による原子力事故影響の把握とその事故対応 への反映2017

    • Author(s)
      山澤弘実
    • Organizer
      日本学術会議主催学術フォーラム
    • Related Report
      2017 Research-status Report
    • Invited
  • [Book] Environmental Contamination from the Fukushima Nuclear Disaster2019

    • Author(s)
      Hiromi Yamazawa et al., Ed. Teruyuki Nakajima, Toshimasa Ohara, Mitsuo Uematsu, Yuichi Onda
    • Total Pages
      372
    • Publisher
      Cambridge University Press
    • Related Report
      2019 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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