Ocean Science Journal

, Volume 46, Issue 4, pp 273–288 | Cite as

Tidal transport through the Tsugaru Strait — part I: Characteristics of the major tidal flow and its residual current

  • Quang-Hung LuuEmail author
  • Kosuke Ito
  • Yoichi Ishikawa
  • Toshiyuki Awaji


The potential role of the tide-induced time-mean flow (the tidal residual current) in determining transport through the Tsugaru Strait (located between the East/Japan Sea and the North Pacific) is investigated using a high-resolution numerical barotropic model. The calculated K1, O1, M2, and S2 tidal fields agree well with available observational records derived from both tide gauge and current meter measurements in the strait and the adjacent seas. The tidal residual current speed reaches 0.3 ms−1 in two narrow “neck” areas where topographic sills are located. This result suggests that tides should be taken into account in estimating the long-term water mass and nutrient transport through narrow regions between the East/Japan Sea and the North Pacific. An interesting aspect of the tidal residual current field is the prediction of several active eddy zones in which sequences of eddy triplets develop in the vicinity of capes. Our vorticity analysis reveals that the interplay of topographic effects arising from both the headland and the sill around capes plays a critical role in the formation of these triple eddy patterns.

Key words

Tsugaru Strait regional tide model tidal residual current eddy triplet 


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Copyright information

© Korea Ocean Research & Development Institute (KORDI) and the Korean Society of Oceanography (KSO) and Springer Netherlands 2011

Authors and Affiliations

  • Quang-Hung Luu
    • 1
    • 2
    Email author
  • Kosuke Ito
    • 1
    • 3
  • Yoichi Ishikawa
    • 1
  • Toshiyuki Awaji
    • 1
  1. 1.Department of GeophysicsKyoto UniversityKyotoJapan
  2. 2.Department of MathematicsVietnam National UniversityHanoiVietnam
  3. 3.Department of Atmospheric SciencesTaiwan National UniversityTaipeiTaiwan

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