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Title
  • ja 津軽海峡大間崎背後の負の水平シアー流で引き起こされる鉛直循環流
  • en Vertical circulation induced by negative shear flow at the downside of Ooma-zaki in the Tsugaru Strait
Creator
    • ja 浅野, 竜太 en Asano, Ryuta
    • ja 伊藤, 薫 en Itoh, Kaoru
Accessrights open access
Subject
  • Other en Tsugaru Strait
  • Other en Gradient flow balance
  • Other en Vorticity balance
  • Other en Vertical circulation
  • NDC 660
Description
  • Abstract en A new type of mechanism for the generation of vertical circulation is revealed with the use of numerical experiments for the bended channel model.　In the steady passage-flow experiment with a flat bottom and no bottom friction, a remarkable vertical circulation is formed only at the downside of bended corner where a negative horizontal shear flow dominates.　Specifically, we call this type circulation “Negative Shear induced Vertical Circulation (NSVC)”, which is caused through the dynamical unbalance of gradient flow and the vorticity balance between the lateral vorticity advection and the sea surface divergence.　A field observation was carried out around the Ooma-zaki area in the eastern Tsugaru Strait to confirm an enhanced downward flow expected by the realistic experiment including the bottom slope and friction.　The spatial istributions of water temperature support the existence of this downward motion.
Publisher ja 北海道大学大学院水産科学研究院
Date
    Issued2020-08-24
Language
  • jpn
Resource Type departmental bulletin paper
Version Type VoR
Identifier DOI https://doi.org/10.14943/bull.fish.70.1.63 , HDL http://hdl.handle.net/2115/79117
ID
  • JaLC 10.14943/bull.fish.70.1.63
Journal
    • EISSN 2435-3353
      • ja 北海道大学水産科学研究彙報 en Bulletin of Fisheries Sciences, Hokkaido University
      • Volume Number70 Issue Number1 Page Start63 Page End76
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Oaidate 2023-07-26