涸沼におけるフォールアウト核種の移行挙動に関する研究(II) -放射性セシウムの移行モデルの開発- Study on Migration Behavior of Fallout Nuclides in Hinuma Lake(II) -Development of a Transfer Model of Radiocesium-

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著者

    • 武石 稔 TAKEISHI Minoru
    • 動力炉・核燃料開発事業団大洗工学センター安全管理部安全対策課 Health and Safety Division, O-arai Engineering Center, Power Reactor and Nuclear Fuel Development Corporation(PNC)
    • 篠原 邦彦 SHINOHARA Kunihiko
    • 動力炉・核燃料開発事業団東海事業所安全管理部安全対策課 Health and Safety Division, Tokai-works, Power Reactor and Nuclear Fuel Development Corporation(PNC)
    • 中島 尚子 NAKASHIMA Naoko
    • 動力炉・核燃料開発事業団大洗工学センター安全管理部安全対策課 Health and Safety Division, O-arai Engineering Center, Power Reactor and Nuclear Fuel Development Corporation(PNC)

抄録

A transfer model has been developed to facilitate the environmental monitoring of fallout (Cesium-<sup>137</sup>) in a lake system. The transfer of radionuclides between zones (i. e., catchment area, lake water, lake bed sediment and fish) was modeled using standard differential equations. Radionuclide transfer velocities between zones were calculated and expressed as a function of rainfall intensity and periodic tidal effects based on observations in Hinuma Lake, Japan. Parameter perturbation analysis of the model showed: (a) <sup>137</sup>Cs concentrations in the lake water (Cw) increased due to the deposition of <sup>137</sup>Cs in the lake and <sup>137</sup>Cs inflow from the catchment area; (b) Cw fluctuates due to the dilution of lake water by precipitation (i. e. Cw decreases) and subsequent inflow of <sup>137</sup>Cs from the catchment area (i. e., Cw increases); (c) Cw increases due to rolling-up of particles of sediments carrying <sup>137</sup>Cs when precipitation increases the current velocity in the lake; and (d) cyclic fluctuation of the flow rate with the tidal level causes variations in Cw.

収録刊行物

  • 保健物理 : hoken buturi  

    保健物理 : hoken buturi 32(1), 53-65, 1997-03-31 

    Japan Health Physics Society

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各種コード

  • NII論文ID(NAID)
    10002136369
  • NII書誌ID(NCID)
    AN00228458
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03676110
  • NDL 記事登録ID
    4184217
  • NDL 雑誌分類
    ZN36(科学技術--原子力工学・工業) // ZS45(科学技術--医学--放射線医学)
  • NDL 請求記号
    Z16-696
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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