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Development of acoustic vertical zooplankton profiling system

Research Project

Project/Area Number 04556026
Research Category

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

Allocation TypeSingle-year Grants
Research Field General fisheries
Research InstitutionUniversity of Tokyo

Principal Investigator

KIMURA Shingo  Univ.of Tokyo, Ocean Res.Int., Res.Asso., 海洋研究所, 助手 (90202043)

Co-Investigator(Kenkyū-buntansha) SUGIMOTO Takashige  Univ.of Tokyo, Ocean Res.Int., Prof., 海洋研究所, 教授 (40004428)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 1993: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1992: ¥2,400,000 (Direct Cost: ¥2,400,000)
Keywordszooplankton / ADCP / acoustic / mooring / secondary production
Research Abstract

A equipment and theory of vertical zooplankton profiling system were developed. This system can observe abundance of zooplankton distributed vertically 150 m depth and horizontally 2-3 km using acoustic scattering intensity with 1 hour interval.
The system was deployed in the lee of a island to confirm the ability of the system through a estimation of biological productivity in a eddy produced by the island and the Kuroshio. As the results, the system observed that zooplankton abundance gradually increased and suggested that its term well agreed with appearing periods of the eddy theoretically. This is a first time to be able to observe fluctuations of zooplankton with such small time-scale interval quantitatively. Therefore, this observing system using sound seems to be useful to describe interactions between primary production and secondary production in the ocean. Using this system, biological fluctuation in the ocean will be observed with the same time-scale as physical fluctuation and studies on the biological change associated with environmental change is expected to be well advanced.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] Shingo Kimura: "Characteristics of the eddy coused by IZu-Oshima Island and the Kuroshio branch current in Sagami Bay,Japan" Journal of Oceanography. 50(印刷中). (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shingo Kimura: "Biological productivity by eddies in the lee of islands" Journal of Oceanography.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shingo Kimura: "Characteristics of the eddy caused by Izu-Oshima Island and the Kuroshio branch current in Sagami Bay" Japan. Joural of Oceanography. 50(in press). (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shingo Kimura: "Biological productivity by eddies in the lee of islands." Joural of Oceanography. (to be submitted).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shingo Kimura: "Characteristics of the eddy caused by Izu-Oshima Island and the Kuroshio branch current in Sagami Bay,Japan" Journal of Oceanography. 50(印刷中). (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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