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Development of method to identify submesoscale disturbances in a wide area and its application to the North Pacific

Research Project

Project/Area Number 26610148
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionTohoku University

Principal Investigator

Suga Toshio  東北大学, 理学研究科, 教授 (70211977)

Research Collaborator ITO Daiki  
Project Period (FY) 2014-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsサブメソスケール擾乱 / 中規模渦 / Argoフロート / スパイシネス / 渦度場・歪場 / 3次元カスケード / 高鉛直波数構造 / 船舶集中観測 / プロファイリングフロート / 国際情報交換
Outline of Final Research Achievements

Submesoscale disturbances on the scale of several kilometers to several tens of kilometers play an important role in the energy cascade and the material transport in the ocean. As a foundation for investigating the wide-area distribution of submesoscale disturbances, a method to detect submesoscale disturbance by using temperature/salinity intrusion structure from the vertical profile data of Argo profiling float array deployed over the global ocean.
In order to understand the process to form a high vertical wave number structure associated with the development of submesoscale phenomena, unique intensive shipboard observation was carried out in the east coast of Honshu, enabling us to grasp this process directly and in detail. This observation quantitatively and theoretically supported the above identification method.

Report

(5 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (11 results)

All 2018 2017 2016 2015 2014

All Journal Article (1 results) Presentation (10 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] 中規模変動に伴うサブメソスケール擾乱―黒潮親潮混合水域における事例研究―2015

    • Author(s)
      伊藤大樹・須賀利雄・細田滋毅・本多牧生・黒田寛・岡英太郎
    • Journal Title

      月刊海洋

      Volume: 47 Pages: 152-161

    • Related Report
      2014 Research-status Report
  • [Presentation] High vertical wavenumber structures observed by an intensive survey of an anticyclonic mesoscale eddy2018

    • Author(s)
      Daiki Ito, Toshio Suga, Eitarou Oka, and Shinya Kouketsu
    • Organizer
      2018 Ocean Sciences Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 中規模渦集中観測データを用いた高鉛直波数構造の分布特性の解明2017

    • Author(s)
      伊藤大樹・須賀利雄・岡英太郎・纐纈慎也
    • Organizer
      日本海洋学会2017年度秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Detection of submesoscale disturbances by the Argo floats2016

    • Author(s)
      Ito, D., and T. Suga
    • Organizer
      CLIVAR Open Science Conference
    • Place of Presentation
      Hyatt Regency Qingdao (青島、中国)
    • Year and Date
      2016-09-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Evolution of seasonal pycnocline and its vertical structure in the North Pacific2016

    • Author(s)
      Yamaguchi, R., and T. Suga
    • Organizer
      CLIVAR Open Science Conference
    • Place of Presentation
      Regency Qingdao (青島、中国)
    • Year and Date
      2016-09-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Argoフロートを用いて検出したサブメソスケール擾乱の分布特性とその要因2016

    • Author(s)
      伊藤大樹、須賀利雄
    • Organizer
      日本海洋学会2016年度秋季大会
    • Place of Presentation
      鹿児島大学郡元キャンパス(鹿児島県鹿児島市)
    • Year and Date
      2016-09-12
    • Related Report
      2016 Research-status Report
  • [Presentation] Argoフロートを用いたサブメソスケール擾乱の検出―検出結果の閾値依存性とその意味―2016

    • Author(s)
      伊藤大樹・須賀利雄
    • Organizer
      2016年度日本海洋学会春季大会
    • Place of Presentation
      東京大学本郷キャンパス(東京都文京区)
    • Year and Date
      2016-03-14
    • Related Report
      2015 Research-status Report
  • [Presentation] A step toward understanding of broadscale distribution of submeoscale disturbances: Analysis of data from the intensive observation in/near a mesoscale eddy in the Kuroshio-Oyashio mixed water region2015

    • Author(s)
      Toshio Suga, Daiki Ito
    • Organizer
      日本海洋学会2015年度秋季大会シンポジウム「サブメソスケール海洋学 ―新たな世界への展望―」
    • Place of Presentation
      愛媛大学城北キャンパス(愛媛県松山市)
    • Year and Date
      2015-09-26
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Submesoscale disturbances associated with mesoscale phenomena: A case study in the Kuroshio-Oyashio mixed water region2015

    • Author(s)
      Daiki Ito, Toshio Suga, shigeki Hosoda, Shinya Kouketsu, Makio Honda, Hideharu Sasaki, Hiroshi Kuroda, Eitarou Oka
    • Organizer
      26th International union of geodesy and geophysics (IUGG)
    • Place of Presentation
      Prague Congress Center(プラハ、チェコ)
    • Year and Date
      2015-06-22
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 中規模変動に伴うサブメソスケール擾乱―黒潮親潮混合水域における事例研究―2015

    • Author(s)
      伊藤大樹・須賀利雄・井上龍一郎・細田滋毅・小林大洋・纐纈慎也・本多牧生・佐々木英治・黒田寛・岡英太郎
    • Organizer
      2015年度日本海洋学会春季大会
    • Place of Presentation
      東京海洋大学品川キャンパス(東京都港区)
    • Year and Date
      2015-03-22
    • Related Report
      2014 Research-status Report
  • [Presentation] 中規模変動に伴うサブメソスケール擾乱―混合水域における渦集中観測データの解析―2014

    • Author(s)
      伊藤大樹・須賀利雄・井上龍一郎・細田滋毅・小林大洋・纐纈慎也・本多牧生・黒田寛・岡英太郎
    • Organizer
      2014年度日本海洋学会秋季大会
    • Place of Presentation
      長崎大学文教キャンパス(長崎県長崎市)
    • Year and Date
      2014-09-14
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2019-03-29  

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