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Characterizing extreme waves around Japan

Research Project

Project/Area Number 15K18290
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Naval and maritime engineering
Research InstitutionThe University of Tokyo

Principal Investigator

Wada Ryota  東京大学, 大学院新領域創成科学研究科, 助教 (20724420)

Research Collaborator WASEDA Takuji  東京大学, 大学院新領域創成科学研究科, 教授 (30376488)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords極値統計 / 有義波高 / 台風 / 空間統計 / 海洋工学 / 極値統計解析 / 不確実性 / 極値波浪解析 / データ誤差 / グループ尤度 / 波浪推算モデル
Outline of Final Research Achievements

In this research, we develop a rational method for the estimation of extreme waves and its uncertainty, In addition, we introduce spatial extremes method to decrease the uncertainty in the estimation. Extreme waves in Japan is dominated by tropical cyclones and characterized by the small data volume and low accuracy. We utilized our original wave model and evaluate the accuracy under tropical cyclones. We apply the methods developed to our data to construct a 100 year return period map for seas around Japan. The result shows smooth spatial variation that could not be seen in previous studies.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (6 results)

All 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] Shell(英国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] Lancaster University(英国)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Extreme value estimation using the likelihood-weighted method2016

    • Author(s)
      Ryota Wada, Takuji Waseda, Philip Jonathan
    • Journal Title

      Ocean Engineering

      Volume: 124 Pages: 241-251

    • DOI

      10.1016/j.oceaneng.2016.07.063

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Extreme Wave Height Estimation for Design of Floating Offshore Wind Turbines2016

    • Author(s)
      和田良太
    • Journal Title

      SYSTEMS, CONTROL AND INFORMATION

      Volume: 60 Issue: 9 Pages: 369-374

    • DOI

      10.11509/isciesci.60.9_369

    • NAID

      130006781797

    • ISSN
      0916-1600, 2424-1806
    • Related Report
      2016 Research-status Report
    • Open Access
  • [Presentation] Characterising extreme sea state severity using absolute spatial dependence2017

    • Author(s)
      Ryota Wada, Adrean Webb, Takuji Waseda, Philip Jonathan
    • Organizer
      15th International Workshop on Wave Hindcasting and Forecasting & 6th Coastal Hazard Symposium
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] TodaiWW3を用いた日本周辺海域における極値波浪解析2016

    • Author(s)
      和田良太, 早稲田卓爾, Adrean Webb
    • Organizer
      日本船舶海洋工学会 平成28年秋季講演会
    • Place of Presentation
      岡山コンベンションセンター
    • Year and Date
      2016-11-21
    • Related Report
      2016 Research-status Report

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Published: 2015-04-16   Modified: 2019-03-29  

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