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Study on establishment of the system of water environmentalimpact assessment of ocean current on an estuary

Research Project

Project/Area Number 18760376
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field 水工水理学
Research InstitutionHiroshima University

Principal Investigator

KOMAI Katsuaki  Hiroshima University, 大学院・工学研究科, 助教 (90314731)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥4,050,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2006: ¥2,900,000 (Direct Cost: ¥2,900,000)
Keywords黒潮 / 瀬戸内海 / 数値解析 / 環境影響評価 / 沿岸域 / 海流 / 流路 / 海洋動態実験
Research Abstract

海流による沿岸域への水環境影響評価システムの構築について数値解析と海洋観測データの解析,ならびに模型実験を踏まえて総合的に検討した.本モデルの適用の対象としたのは我が国有数沿岸域である瀬戸内海の流れ場に及ぼす黒潮の影響評価である.まず,1982〜1999年を3期に分けて瀬戸内海の海洋観測結果を3期に分類するとともに,実測の密度分布および気圧配置の季節変動を考慮した平面二次元モデルによって瀬戸内海全域の流れ場を解析し,通過流量の強さと流向の変化は下層の低塩分水塊の滞留域の変化によく一致することを示した.次に,運動量保存則に基づいた考察から,黒潮流軸の位置とそれに沿った流速等の水理量を三角級数で近似する数値モデルを構築した.瀬戸内海の通過流量は1010m3/monthのオーダーで期毎に異なり,黒潮流路の蛇行・直進による影響は季節変動量の約3〜4割に相当することが推定された.海洋動態実験においても海流の接岸と開口部からの流入傾向は一致しており,海流の流路変化に伴う開口部境界域での流れ特性の違いを反映させることがモデルの高精度化につながることが示された.

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (13 results)

All 2008 2007 2006

All Journal Article (10 results) (of which Peer Reviewed: 6 results) Presentation (3 results)

  • [Journal Article] 大釜達夫 : 黒潮の蛇行・直進が瀬戸内海の流れに及ぼす影響2008

    • Author(s)
      駒井克昭,日比野忠史
    • Journal Title

      土木学会論文集 Vol.64

      Pages: 165-179

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 日比野忠史 : 瀬戸内海における通過流の経年変動2008

    • Author(s)
      駒井克昭,金キョンヘ,池原貴一
    • Journal Title

      海岸工学論文集 第55巻

      Pages: 406-410

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Kyung-hoi Kim and Tadashi Hibino : Interannual variation of flow-field in a semi-closed sea with two entrances facing an ocean current2008

    • Author(s)
      Kiichi Ikehara, Katsuaki Komai
    • Journal Title

      Proceedings of International Conference on Civil and Environmental Engineering CDROM

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 瀬戸内海における通過流の経年変動2008

    • Author(s)
      駒井克昭, 金キョンへ, 池原貴一, 日比野忠史
    • Journal Title

      海岸工学論文集 55

      Pages: 406-410

    • NAID

      130003992275

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] INTERANNUAL VARIATION OF FLOW-FIELD IN A SEMI-CLOSED SEA WITH TWO ENTRANCES FACING AN OCEAN CURRENT2008

    • Author(s)
      Kiichi Ikehara, Katsuaki Komai, Kyung-hoi Kim, et.al.
    • Journal Title

      Proceedings of International Conference on Civil and Environmental Engineering (ICCEE 2008)

      Pages: 51-51

    • Related Report
      2008 Annual Research Report
  • [Journal Article] 黒潮の蛇行・直進が瀬戸内海の流れに及ぼす影響2008

    • Author(s)
      駒井克昭, 日比野忠史, 大釜達夫
    • Journal Title

      土木学会論文集B 64

      Pages: 165-179

    • NAID

      130004468074

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of the Kuroshio stream path variation on current fields in the Seto Inland Sea2007

    • Author(s)
      K. Komai, et. al.
    • Journal Title

      Proceedings of the 14th PAMS/JECSS Workshop

      Pages: 244-247

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Generation and propagation forecast of storm surge in the Seto Inland Sea2007

    • Author(s)
      Komai K, et. al.
    • Journal Title

      Coastal Engineering 2006 (Proceedings of 30th International Conference on Coastal Engineering)

      Pages: 1349-1361

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 黒潮の蛇行・直進による西日本南岸の水位変動量の推定2006

    • Author(s)
      駒井克昭, 日比野忠史, 松本英雄
    • Journal Title

      海岸工学論文集 53・2

      Pages: 1281-1285

    • NAID

      130003991887

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Generation and propagation forecast of storm surge in the Seto Inland Sea2006

    • Author(s)
      Komai K., Hibino T., Matsumoto H.
    • Journal Title

      30th International Conference on Coastal Engineering (Book of Abstracts)

    • Related Report
      2006 Annual Research Report
  • [Presentation] 金キョンヘ : 瀬戸内海における流れ場と水位の長期的な変動特性の把握2008

    • Author(s)
      池原貴一,日比野忠史,駒井克昭
    • Organizer
      第60回土木学会中国支部研究発表会
    • Place of Presentation
      広島大学
    • Year and Date
      2008-05-31
    • Related Report
      2008 Final Research Report
  • [Presentation] 瀬戸内海における流れ場と水位の長期的な変動特性の把握2008

    • Author(s)
      池原貴一, 日比野忠史, 駒井克昭, 金キョンヘ
    • Organizer
      第60回土木学会中国支部研究発表会
    • Place of Presentation
      広島大学
    • Year and Date
      2008-05-31
    • Related Report
      2008 Annual Research Report
  • [Presentation] Yasushi Matsunaga : Influence of the Kuroshiostream path variation on current fields in the Seto Inland Sea2007

    • Author(s)
      Katsuaki Komai, Tadashi Hibino
    • Organizer
      Proceedings of the 14th PAMS/JECSS Workshop
    • Place of Presentation
      広島大学
    • Year and Date
      2007-05-25
    • Related Report
      2008 Final Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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