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Field observations of the three-dimensional structure of wind-driven currents due to the formation of secondary circulations and the development of numerical model.

Research Project

Project/Area Number 22560523
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Hydraulic engineering
Research InstitutionGunma University

Principal Investigator

UZAKI Kenichi  群馬大学, 大学院・工学研究科, 准教授 (30443906)

Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords吹送流 / ラングミュア循環流 / H-ADCP / 水温構造 / 風 / ADCP / 二次循環流 / 水平流速分布 / 水温分布 / 水平型ADCP / Workhorse / Webカメラ
Research Abstract

Field observations had been conducted at the Watarase retarding basin in the Gunma prefecture for a month by using the H-ADCP in order to observe the horizontally-periodic profile of wind-driven current velocity due to the formation of Langmuir circulations :LCs easily and frequently. At the Watarase retarding basin, streaks of air bubbles were often observed under the strong wind. It suggested the formation of LCs beneath the water surface. From the observation results, the horizontally-periodic profiles of wind-driven current velocity with the high- and low-speed zones alternatively were shown under the strong wind. The horizontal profile of wind-driven currents at the surface were estimated from the observation results, and it showed that the maximum speed in the high-speed zone were the twice of the generally-estimated surface speed of wind-driven currents. It suggested that the consideration of LCs to the wind-driven currents revealed the revision of advection time of surface floating matter.

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (10 results)

All 2013 2012 2011

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (5 results)

  • [Journal Article] 二次循環流を伴う吹送流の三次元構造と 湖沼の水温構造に関する現地観測2013

    • Author(s)
      鵜崎 賢一・荒木 陽介・堀口 真弥・天笠 達也・戸屋 裕亮・山田 航
    • Journal Title

      土木学会 水工学論文集

      Volume: 第57巻,CD-ROM

    • NAID

      130004558171

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] 二次循環流を伴う吹送流の三次元構造に関する現地観測2012

    • Author(s)
      井出航路群馬大学工学部社会環境デザイン工学科,本間聖也,荒木陽介,堀口真弥,鵜崎賢一
    • Journal Title

      土木学会水工学論文集

      Volume: 第56巻,CD-ROM

    • NAID

      130004557759

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] 二次循環流を伴う吹送流の三次元構造に関する現地観測2012

    • Author(s)
      井出航路
    • Journal Title

      土木学会水工学論文集

      Volume: 56

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] THREE-DIMENSIONAL STRUCTURE OF WIND-DRIVEN CURRENTS ACCOMPANNIED WITH SECONDARY CIRCULATIONS AND THEIR EFFECTS ON THE THERMAL STRUCTURE OF LAKES AND OCEANS2012

    • Author(s)
      Ken-ichi Uzaki, Kouji Ide, Yousuke Araki, Shinya Horiguchi
    • Journal Title

      Proc.of International Conference on Coastal Engineering

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 二次循環流を伴う吹送流の三次元構造に関する現地観測2011

    • Author(s)
      井出航路・本間聖也・荒木陽介・堀口真弥・鵜崎賢一
    • Journal Title

      土木学会水工学論文集

      Volume: 第56巻(CD-ROM)

    • NAID

      130004557759

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] 二次循環流を伴う吹送流の三次元構造と湖沼の水温構造に関する現地観測2013

    • Author(s)
      鵜崎賢一・荒木陽介・堀口真弥・天笠達也・戸屋裕亮・山田航
    • Organizer
      土木学会水工学講演会
    • Place of Presentation
      名城大学
    • Related Report
      2012 Final Research Report
  • [Presentation] 二次循環流を伴う吹送流の三次元構造に関する現地観測2013

    • Author(s)
      井出航路
    • Organizer
      土木学会水工学講演会
    • Place of Presentation
      名城大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] Three-dimensional structure of wind-driven currents accompanied with secondary circulations and their effects on the thermalstructure of lakes and oceans2012

    • Author(s)
      Ken-ichi Uzaki*, Kouji Ide*, Yousuke Araki*, Shinya Horiguchi**
    • Organizer
      International Conference on Coastal Engineering2012
    • Place of Presentation
      Santander(Spain) Dept. of Civil and Environmental Engineering, Gunma University.
    • Related Report
      2012 Final Research Report
  • [Presentation] 二次循環流を伴う吹送流の三次元構造に関する現地観測2012

    • Author(s)
      本間聖也,荒木陽介,堀口真弥,鵜崎賢一
    • Organizer
      井出航路群馬大学工学部社会環境デザイン工学科
    • Place of Presentation
      愛媛大学
    • Related Report
      2012 Final Research Report
  • [Presentation] 二次循環流を伴う吹送流の三次元構造日本流体力学会年会講演概要集2011

    • Author(s)
      井出航路,鵜崎賢一
    • Organizer
      群馬大学大学院工学研究科
    • Place of Presentation
      首都大学東京
    • Related Report
      2012 Final Research Report

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Published: 2010-08-23   Modified: 2019-07-29  

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