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Ocean Environmental Survey for water structure and flow characterisitics at coastal area which are influenced by cobined river and ocean waters.

Research Project

Project/Area Number 15K06625
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Naval and maritime engineering
Research InstitutionNational Institute of Technology, Toyama College

Principal Investigator

Chiba Hajime  富山高等専門学校, 商船学科, 教授 (20369961)

Co-Investigator(Kenkyū-buntansha) 古山 彰一  富山高等専門学校, 電子情報工学科, 教授 (90321421)
Co-Investigator(Renkei-kenkyūsha) YOSHIDA Masashi  サレジオ工業高等専門学校, 機械電子工学科, 講師 (50446241)
SONODA Jun  仙台高等専門学校, 知能エレクトロニクス工学科, 教授 (30290696)
MATSUURA Tomonori  富山大学, 理工学研究部, 教授 (10414400)
MICHIDA Yutaka  東京大学, 大気海洋研究所, 教授 (20323628)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsエスチュアリー循環 / CTD / ADCP / 電磁式流速計 / 水塊構造 / 海流 / 潮流 / 電磁式流向流速計 / 海潮流 / 潮汐流
Outline of Final Research Achievements

We examine a particular current, at Toyama New Port, that is influenced by the combination of inflows and open seawater. This current occurs in summer and flows westward at the speed of about 0.1-0.3 m/s. We conducted CTD, Electromagnetic current meter, and ADCP observations of the marine environment for the flow in order to gain an understanding of the vertical formulations and seasonal variations. The results of those observations revealed that the waters consisted of three layers, with the upper layer most influenced by the river and the lower layer most influenced by the open sea. It was also found that the borders of layers changed according to seasons, and that the flow was influenced by the tidal current at lower layer, the river water at upper layer and the topography.
We also had the obseravations at coast of Yamamoto-cho, Miyagi Prefecture and analyzed the characterisitics of the flow and water strucuture. These are also influenced by combination of river and open sea waters.

Report

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

    (3 results)

All 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] Ocean Environmental Survey on Influence of River Inflows on Current within a Harbor2017

    • Author(s)
      神田 侑希、千葉 元、吉田 将司、島崎 清寿
    • Journal Title

      The Journal of Japan Institute of Navigation

      Volume: 136 Issue: 0 Pages: 98-106

    • DOI

      10.9749/jin.136.98

    • NAID

      130006935833

    • ISSN
      0388-7405, 2187-3275
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 富山湾沿岸部から富山新港内の海洋環境調査2017

    • Author(s)
      池畑裕太郎、千葉元、神田侑希、吉田将司
    • Organizer
      日本航海学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 港内の河口域近辺に発生する流れについての海洋環境調査2016

    • Author(s)
      神田侑希・千葉元・吉田将司・島崎清寿
    • Organizer
      日本航海学会2016年度秋季講演会
    • Place of Presentation
      呉市生涯学習センター(広島県呉市)
    • Year and Date
      2016-10-29
    • Related Report
      2016 Research-status Report

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Published: 2015-04-16   Modified: 2019-03-29  

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