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Development of Gas-Generating Pop-Up Floats for Measurenent of Deep Circulations

Research Project

Project/Area Number 01840014
Research Category

Grant-in-Aid for Developmental Scientific Research (B).

Allocation TypeSingle-year Grants
Research Field 気象・海洋・陸水学
Research InstitutionOcean Research Institute, University of Tokyo

Principal Investigator

TAIRA Keisuke  Ocean Research Institute, Professor, 海洋研究所, 教授 (50013579)

Co-Investigator(Kenkyū-buntansha) MURAKAMI Hideyuki  Kiyo-Denshi Co. Chief Technician, 主任研究員
TAKEUCHI Tomoyoshi  Electro Communication University, Professor, 電子工学科, 教授 (00017378)
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥11,400,000 (Direct Cost: ¥11,400,000)
Fiscal Year 1990: ¥5,900,000 (Direct Cost: ¥5,900,000)
Fiscal Year 1989: ¥5,500,000 (Direct Cost: ¥5,500,000)
KeywordsOcean deep circulation / Pop-Up / Utilization of satellite / Argos systen / Lagrangian measurements / Electrolysis of water / Hydrogen gas generator / Drifting float / 深層循環の測定 / 中深層漂流ブイ
Research Abstract

Satellite trackings of surface drifters are widely used for direct measurements of ocean circulation at the surface layer. Trackings of the Mid-Depth floats are made made by using acoustic signals. An example of this technique is sofar floats. However, Tracking range is limited and it needs set and recomery of receiving stations.
Development of Pop-Up float for free drift at Mid-Depth is achieved in this study. The float drift for several tens of say and it comes to the surface. During the surface drift for 25 houfs, It transmits fadio signals for the argos system. It descends again to the preset depth of drift which is determined before launch. The Pop-Up is achievid by gas generation in the float. Electrolysis of pure water is tested, Ad it is proved to be a successful method. Hydrogen gas generator is also developed in this study. Working mathrial is calcium hydrate contained in a capsule. A small and light argos transmitter of total weight of 45 G is obtained for the study. Completion of the Pop-Up Float will be made after sea trial ofthe gas generator in march 1991.

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 平 啓介,竹内 倶佳: "深層漂流ポップアップフロ-トの開発" 月刊「海洋」.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Taira,K.and T.Takeuchi: "Development of gasーgenerating popーup floats for measurements of deep circulations" J.Oceanogn.Soc.Japan.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] TAIRA, Keisuke AND Tomoyoshi TAKEUCHI: "Development of gas-generating Pop-Up floats for measurements of deep circulations" J. Oceanogr. Soc. Japan.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 平 啓介.竹内 倶佳: "深層漂流ポップアップフロ-トの開発" 月刊「海洋」.

    • Related Report
      1990 Annual Research Report
  • [Publications] Taira,K.and T.Takeuchi: "Development of gasーgenerating popーup floats for measurements of deep circulations" J.Oceanogr.Soc.Japan.

    • Related Report
      1990 Annual Research Report
  • [Publications] 平啓介: "音波による海洋構造の可視化" 流れの可視化. 9. 34-37 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 平啓介,今脇資郎: "TOPEX/POSEIDON PROJECT" 航水研ノ-ト,空と海. 11. 47-50 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 平啓介: "海水と大気の運動の相互作用を解明する" 日本の科学と技術. 30. 22-27 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 東政能,益満侃,平啓介: "音波ドップラ-流速プロファイラ並びに赤外放射温度計による本州南方の黒潮の航走観測" 海と空. 65. 151-158 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 平啓介他: "TRACKING OF SOFAR FLOATS AT MID-DEPTH IN SHIKOKU BASIN" 日本海洋学会誌.

    • Related Report
      1989 Annual Research Report
  • [Publications] 平啓介,竹内倶佳,村上英幸: "POP-UP FLOAT FOR DEEP CIRCULATION MEASUREMENT" 日本海洋学会誌.

    • Related Report
      1989 Annual Research Report
  • [Publications] 広沢春任,平啓介(分担執筆): "海と人類の未来(寺本俊彦編)" 日本学術振興会, 211 (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 平啓介(分担予定): "DEEP CIRCULATION IN THE NORTH PACIFIC(寺本俊彦編)"

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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