Variations in turbulent energy dissipation and water column stratification at the entrance of a tidally energetic strait

• Kobayashi, Shiho

• Hashimoto, Eisuke

• Nagao, Masayuki

• Takasugi, Yoshio

Abstract

We observed tidal currents, turbulent energy dissipation and water column stratification at the entrance of a narrow strait (Neko Seto) in the Seto Inland Sea, Japan, using a free-falling turbulent microstructure profiler (TurboMAP) and acoustic Doppler current profiler (ADCP). The variation in turbulent energy dissipation at the entrance of the strait was not at quarter-diurnal frequency but at semi-diurnal frequency; turbulent energy dissipation was enhanced during the ebb tide, although it was moderate during the flood tide. This result is consistent with the results of Takasugi (1993), which showed the asymmetry of tidal energy loss during a semidiurnal tidal cycle using control volume analysis. It is suggested that significant turbulent energy dissipation is generated in the strait, which influences the properties of water outside the strait when tidal currents flow out from the strait.

Journal

• Journal of Oceanography

  Journal of Oceanography 65 (5), 657-664, 2009-10

  Springer Verlag

Keywords

• Seto Inland Sea
• Tidal currents
• Tidal variation
• Tidally energetic strait
• Turbulent energy dissipation

Details

• CRID: 1050845760541817984
• NII Article ID: 10029031527
• NII Book ID: AA10833529
• ISSN: 09168370
• HANDLE: 2433/89643
• NDL BIB ID: 10338354
• Web Site: http://id.ndl.go.jp/bib/10338354
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10338354
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • NDL
  • CiNii Articles