Direct measurements of dissipation rate of turbulent kinetic energy of North Pacific subtropical mode water

DOI Web Site Web Site 被引用文献7件 オープンアクセス
  • Kosuke Mori
    National Research Institute of Fisheries Science Fisheries Research Agency Yokohama Japan
  • Kazuyuki Uehara
    School of Marine Science and Technology Tokai University Shizuoka Japan
  • Takahiko Kameda
    National Research Institute of Fisheries Science Fisheries Research Agency Yokohama Japan
  • Shigeho Kakehi
    Tohoku National Fisheries Research Institute Fisheries Research Agency Shiogama Japan

書誌事項

公開日
2008-03
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2007gl032867
公開者
American Geophysical Union (AGU)

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説明

<jats:p>Measurements of turbulent kinetic energy dissipation rate ɛ were performed in a region of North Pacific subtropical mode water (STMW), and the vertical eddy diffusivity <jats:italic>K</jats:italic><jats:sub><jats:italic>z</jats:italic></jats:sub> was calculated from the observed ɛ values. In summer, the magnitude of ɛ in the STMW interior was 2–3 × 10<jats:sup>−10</jats:sup> Wkg<jats:sup>−1</jats:sup>, whereas the values at both the upper and lower boundaries of STMW were 4–6 × 10<jats:sup>−10</jats:sup> Wkg<jats:sup>−1</jats:sup>. In winter, on the other hand, ɛ was almost uniform and had a magnitude less than 10<jats:sup>−10</jats:sup> Wkg<jats:sup>−1</jats:sup> over the whole depth of STMW. The magnitude of <jats:italic>K</jats:italic><jats:sub><jats:italic>z</jats:italic></jats:sub> was mostly from 10<jats:sup>−6</jats:sup> to 10<jats:sup>−5</jats:sup> m<jats:sup>2</jats:sup>s<jats:sup>−1</jats:sup> in summer and from 10<jats:sup>−7</jats:sup> to 10<jats:sup>−5</jats:sup> m<jats:sup>2</jats:sup>s<jats:sup>−1</jats:sup> in winter. These are at least one order of magnitude smaller than the inferred value from a budget analysis of potential vorticity in STMW.</jats:p>

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