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Development of Risk Prediction Methods for Coastal Marine Environments with Tidal Flats due to Global Warming

Research Project

Project/Area Number 19KK0380
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (A))

Allocation TypeMulti-year Fund
Research Field Hydraulic engineering
Research InstitutionFukuoka Institute of Technology (2023)
Kyushu University (2019-2022)

Principal Investigator

Tai Akira  福岡工業大学, 社会環境学部, 准教授 (20585921)

Project Period (FY) 2020 – 2023
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
Keywords干潟 / 土砂輸送 / 地球温暖化 / 底質輸送シミュレーション / 領域海洋モデル / 波浪推算モデル / 波浪・潮流カップリングモデル / ROMS / 干潟生態系 / 土砂 / 河口干潟 / アサリ / ホトトギスガイ / 沿岸海洋環境 / 数値モデル
Outline of Research at the Start

本研究では干潟に関する知見を境界条件として沿岸海洋環境の気候変動下における将来予測を実施する.ここで,対象とする沿岸海洋環境は沿岸域の水温・塩分・酸素濃度ならびに土砂輸送特性とする.沿岸海洋の数値モデルを構築し,そのモデルに将来気候予測データベースから統計的に作成した温暖化後の気象条件を入力することで,将来の沿岸海洋環境を予測する.対象海域は日本では基研究で対象としている有明海・瀬戸内海(豊後灘)とし,その比較研究のために有明海と同様に大潮汐により広大な干潟を有するIrish Seaを対象とする.海底地形などの基本的なデータは利用可能であるが,不足するデータは現地観測を実施し取得する.

Outline of Final Research Achievements

In simulations of sediment transport, which are crucial for tidal flats, tidal currents are often the only factor considered, and there are few studies that include the effects of waves. Therefore, in this study, a coupled model of tidal currents and waves was applied to the Ariake Sea. Using a coupled model that integrates the Regional Ocean Modeling System (ROMS) with a wave estimation model, sediment transport simulations were conducted. The results showed that considering both tidal currents and waves produced results that were closer to actual field observations compared to when only tidal currents were considered. Furthermore, although most of the research period coincided with travel restrictions due to the coronavirus, which shortened travel periods, we were able to supplement the implementation of collaborative research through online meetings and discussions via email.

Academic Significance and Societal Importance of the Research Achievements

本研究は,地球温暖化による干潟を有する沿岸海洋環境のリスク予測手法の開発に関して,波と流れの共存場における座標軸に応じたレイノルズ応力の変化,三次元広域土砂動態計算にもとづいた 河川出水に伴う干潟の泥質化機構の解明,気候予測データベースd4PDFに基づく九州地方の降雨及び河川流量の将来変化特性についてなどについて検討を行い成果を学術論文に発表した.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (9 results)

All 2024 2023 2022 2021

All Int'l Joint Research (1 results) Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results) Presentation (2 results)

  • [Int'l Joint Research] Bangor University(英国)2022

    • Related Report
      2023 Annual Research Report
  • [Journal Article] CHARACTERRISTICS OF YEAR TO YEAR CHANGE OF TIDES AND TIDAL CURRENT IN ARIAKE SEA AND ISAHAYA BAY2024

    • Author(s)
      TAI Akira、HAYAMI Yuichi、MUROYAMA Reitaro、KONOMI Satoshi、NEILL Simon
    • Journal Title

      Japanese Journal of JSCE

      Volume: 80 Issue: 16 Pages: n/a

    • DOI

      10.2208/jscejj.23-16139

    • ISSN
      2436-6021
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Change of Tide by Decreasing the Length of Ariake Bay2023

    • Author(s)
      Tai Akira、Muroyama Reitaro、Neill Simon
    • Journal Title

      Proceedings of the 40th IAHR World Congress

      Volume: 1 Pages: 2770-2776

    • DOI

      10.3850/978-90-833476-1-5_iahr40wc-p0788-cd

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Analysis of Resuspension Phenomenon Using Coupled Wave, Current and Sediment Transport Model in the Ariake Sea2022

    • Author(s)
      Akira Tai; Simon Neill; Matthew Lewis; Hideo Oshikawa
    • Journal Title

      Proceedings of the 39th IAHR World Congress

      Volume: 39 Pages: 5479-5484

    • DOI

      10.3850/iahr-39wc252171192022172

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] MECHANISM OF THE SPATIO-TEMPORAL DIFFERENCES IN THE M<sub>2</sub> TIDAL AMPLIFICATION FACTOR DUE TO THE DECREASE OF THE BAY LENGTH IN THE ARIAKE SEA2021

    • Author(s)
      田井明
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

      Volume: 77 Issue: 2 Pages: I_361-I_366

    • DOI

      10.2208/kaigan.77.2_I_361

    • NAID

      130008113337

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] CLARIFICATION OF SILTATION MECHANISM OF INTERTIDAL FLAT DUE TO RIVER FLOOD BASED ON QUASI THREE-DIMENSIONAL NUMERICAL CALCULATIONS OF REGIONAL SEDMENT TRANSPORT2021

    • Author(s)
      鵜﨑 賢一, 矢菅 晶太, 田井 明, 齋田 倫範, 池畑 義人
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

      Volume: 77 Issue: 2 Pages: I_493-I_498

    • DOI

      10.2208/kaigan.77.2_I_493

    • NAID

      130008113304

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] CHANGE OF PRECIPITATION AND RIVER DISCHARGE IN KYUSHU ISLAND BY GLOBAL WARMING BASED ON LARGE ENSEMBLE EXPERIMENTS2021

    • Author(s)
      田井 明, 於久 達哉, 鍋島 孝顕
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

      Volume: 77 Issue: 2 Pages: I_31-I_36

    • DOI

      10.2208/jscejhe.77.2_I_31

    • NAID

      130008160103

    • ISSN
      2185-467X
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 日本沿岸における潮汐振幅の季節変動について2023

    • Author(s)
      室山 怜太郎、田井 明
    • Organizer
      土木学会全国大会第78回年次学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 熊本地震後の白川河口干潟の地盤変化特性および干潟生態系の長期変化2021

    • Author(s)
      竹下佳佑,田井明
    • Organizer
      令和2年度土木学会西部支部研究発表会
    • Related Report
      2020 Research-status Report

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Published: 2020-02-06   Modified: 2025-01-30  

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