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突風率と波浪場の影響に関する観測研究

Publicly Offered Research

Project AreaMulti-scale air-sea interaction under the East-Asian monsoon: A "hot spot" in the climate system
Project/Area Number 25106705
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionThe University of Tokyo

Principal Investigator

早稲田 卓爾  東京大学, 新領域創成科学研究科, 教授 (30376488)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2014: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Keywords海洋科学 / 気象学 / 海上安全 / 自然現象観測・予測 / 突風 / 波浪観測 / 非線形波
Outline of Annual Research Achievements

GPS波浪観測: GPS波浪計を、オーストラリアCSIROとBureau of Meteorologyが共同で行っているSOFS(Southern Ocean Flux Station)観測ブイに搭載した(2015年3月)。波浪計測は2時間に一度20分の計測を継続して行った.イリジウム通信で転送される統計値は常時モニタリングし,異常値の確認を行った.通年で途切れなくデータを取得することに成功した.本観測ブイでは、直接の大気フラックス計測は行わないが、風速計時系列、海洋乱流、複数の波浪計(加速度センサー)計測などを行っており,時系列同士の比較が可能となる.
GPS波浪計観測データの品質管理と解析: SOFSブイ加速度計データの解析により,波浪中流体粒子運動の推定を行い,JKEO/NKEOデータと同様の解析結果が得られた.これにより,波群中の最大波の粒子速度は,弱い非線形性を考慮した速度を超えるということが,測定手法によらない頑強なものであることが確認できた。
風速計データの解析と整備:SOFS風速時系列から得られた,突風率と乱流強度について,総観的な大気場との関係を考察するため,オーストラリア南部海域の大気モデルを、米国NOAAのWRFをベースとする領域大気モデルで再現した.その結果,極渦の影響による寒冷前線の通過と乱流強度の増大が関係していることが判った.
突風率と波浪場の関係:SOFSブイで計測された波浪データの解析から,この海域ではうねりが卓越することがわかり,従って,突風率と波浪場との関係が必ずしも顕著ではないことが判った.この海域ではむしろ,前線に伴う鉛直循環が乱流強度増大の主要因出ることが判った.

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (20 results)

All 2016 2015 2014 2013

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Acknowledgement Compliant: 2 results,  Open Access: 1 results) Presentation (13 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] The Impact of the Winter Monsoon on Marine Surface-Layer Turbulence2015

    • Author(s)
      Nishida, T., and T. Waseda
    • Journal Title

      Journal of Boundary-Layer Meteorology

      Volume: 157 (1) Issue: 1 Pages: 141-156

    • DOI

      10.1007/s10546-015-0053-5

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Deep water observations of extreme waves with moored and free GPS buoys2014

    • Author(s)
      Waseda, T., M. Sinchi, K. Kiyomatsu, T. Nishida, S. Takahashi, S. Asaumi, Y. Kawai, H. Tamura, Y. Miyazawa
    • Journal Title

      Ocean Dynamics

      Volume: 64 Issue: 9 Pages: 1269-1280

    • DOI

      10.1007/s10236-014-0751-4

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] On recording sea surface elevation with accelerometer buoys: lessons from ITOP2014

    • Author(s)
      Collins III, C. O., Lund, B., Waseda, T., & Graber H. C.
    • Journal Title

      Ocean Dynamics

      Volume: 64 (6) Issue: 6 Pages: 895-904

    • DOI

      10.1007/s10236-014-0732-7

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Impact of Winter Northwest Monsoon on Gust Factor2013

    • Author(s)
      Nishida, & Waseda
    • Journal Title

      ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering

      Volume: 5

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Experimental evidence of the modulation of a plane wave to oblique perturbations and generation of rogue waves in finite water depth.2013

    • Author(s)
      Toffoli, Fernandez, Monbaliu, Benoit, Gagnaire-Renou, Lefevre, ...Waseda & Onorato
    • Journal Title

      Physics of Fluids

      Volume: 25(9) Issue: 9 Pages: 91701-91701

    • DOI

      10.1063/1.4821810

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Excitation of rogue waves in a variable medium: An experimental study on the interaction of water waves and currents2013

    • Author(s)
      Toffoli, Waseda., Houtani, Kinoshita, Collins, Proment, & Onorato
    • Journal Title

      Physical Review E

      Volume: 87(5) Issue: 5 Pages: 51201-51201

    • DOI

      10.1103/physreve.87.051201

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Validation of the downscaling method for the high-accuracy wind map2013

    • Author(s)
      西田智哉・早稲田卓爾・鈴木靖・湯浅城之
    • Journal Title

      Journal of the Japan Society of Naval Architects and Ocean Engineers

      Volume: 17 Issue: 0 Pages: 159-167

    • DOI

      10.2534/jjasnaoe.17.159

    • NAID

      10031178904

    • ISSN
      1880-3717, 1881-1760
    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] 南半球中緯度海域における乱流強度と風波についての解析2016

    • Author(s)
      北祐樹, 早稲田卓爾, 西田智哉, Peter Jansen, Eric Schulz
    • Organizer
      日本海洋学会春季大会
    • Place of Presentation
      東京海洋大学(品川,東京)
    • Year and Date
      2016-03-15
    • Related Report
      2014 Annual Research Report
  • [Presentation] Turbulence intensification of marine winds at midlatitude in the southern hemisphere; comparison with the northern hemisphere2016

    • Author(s)
      Kita, Y., T. Waseda, E. W. Schulz, P. Jansen, and T.Nishida
    • Organizer
      Ocean Sciences
    • Place of Presentation
      New Orleans, Louisiana, U.S.A.
    • Year and Date
      2016-02-21
    • Related Report
      2014 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observed orbital velocity of extreme waves and directional spectrum2015

    • Author(s)
      Waseda, et al.
    • Organizer
      International Workshop on Wave Forecasting and Hindcasting
    • Place of Presentation
      Key West, Florida, U.S.A.
    • Year and Date
      2015-11-08
    • Related Report
      2014 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 南半球中緯度海上風の乱流強度増大メカニズムについて2015

    • Author(s)
      北祐樹、早稲田卓爾、西田智哉、P. Jansen、E. Schulz
    • Organizer
      気象学会2015年春季大会
    • Place of Presentation
      つくば国際会議場(茨城県つくば市)
    • Year and Date
      2015-05-22
    • Related Report
      2014 Annual Research Report
  • [Presentation] 南北両半球の中緯度海域における突風率の比較と解析2015

    • Author(s)
      北祐樹、早稲田卓爾、西田智哉、P. Jansen、E. Schulz
    • Organizer
      日本海洋学会春季大会
    • Place of Presentation
      東京海洋大学(東京都品川区)
    • Year and Date
      2015-03-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] 外洋で観測された波浪粒子速度について2015

    • Author(s)
      早稲田卓爾、P. Jansen, E. Schulz4, A. Babanin, H. Rapizo
    • Organizer
      日本海洋学会春季大会
    • Place of Presentation
      東京海洋大学(東京都品川区)
    • Year and Date
      2015-03-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] 海洋波と突風の関係について2014

    • Author(s)
      早稲田卓爾、西田智哉、清松啓司、川合義美
    • Organizer
      日本海洋学会
    • Place of Presentation
      品川、東京
    • Related Report
      2013 Annual Research Report
  • [Presentation] Nonlinear Internal Wave Generation Around Islands in Kuroshio2014

    • Author(s)
      Kodaira, Waseda, Miyazawa
    • Organizer
      Ocean Sciences Meeting
    • Place of Presentation
      Honolulu, Hawaii, USA
    • Related Report
      2013 Annual Research Report
  • [Presentation] 冬季北西モンスーンによる海面乱流活発化に関する解析2013

    • Author(s)
      西田 智哉
    • Organizer
      日本気象学会
    • Place of Presentation
      仙台、宮城
    • Related Report
      2013 Annual Research Report
  • [Presentation] Spectral broadening of free surface gravity waves as a consequence of resonance and quasi-resonance cascade under influence of wind2013

    • Author(s)
      Hirobe, Waseda, Kinoshita & Kawamura
    • Organizer
      WISE
    • Place of Presentation
      College Park, Maryland, USA
    • Related Report
      2013 Annual Research Report
  • [Presentation] Extreme wave observations in deep ocean2013

    • Author(s)
      Waseda, Kiyomatsu, Nishida, Fujimoto and Shinchi
    • Organizer
      13th International Workshop on Wave Hindcasting & Forecasting and 4th Coastal Hazards Symposium
    • Place of Presentation
      Banff, Canada
    • Related Report
      2013 Annual Research Report
  • [Presentation] The Impact of Winter Northwest Monsoon on Gust Factor2013

    • Author(s)
      Nishida, & Waseda
    • Organizer
      ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering
    • Place of Presentation
      Nantes, France
    • Related Report
      2013 Annual Research Report
  • [Presentation] 黒潮が通過する伊豆諸島上流に生じる内部波ソリトンの数値計算2013

    • Author(s)
      小平翼、早稲田 卓爾、宮澤泰正
    • Organizer
      日本海洋学会
    • Place of Presentation
      札幌、北海道
    • Related Report
      2013 Annual Research Report

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Published: 2013-05-15   Modified: 2019-07-29  

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