Other
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3505601m&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 5, CiteID L05601
Other
1
Oceanography: Physical: Turbulence, Diffusion, And Mixing Processes (4490), Oceanography: General: Water Masses, Oceanography: Physical: Upper Ocean And Mixed Layer Processes
Scientific paper
Measurements of turbulent kinetic energy dissipation rate $\varepsilon$ were performed in a region of North Pacific subtropical mode water (STMW), and the vertical eddy diffusivity K z was calculated from the observed $\varepsilon$ values. In summer, the magnitude of $\varepsilon$ in the STMW interior was 2-3 × 10-10 Wkg-1, whereas the values at both the upper and lower boundaries of STMW were 4-6 × 10-10 Wkg-1. In winter, on the other hand, $\varepsilon$ was almost uniform and had a magnitude less than 10-10 Wkg-1 over the whole depth of STMW. The magnitude of K z was mostly from 10-6 to 10-5 m2s-1 in summer and from 10-7 to 10-5 m2s-1 in winter. These are at least one order of magnitude smaller than the inferred value from a budget analysis of potential vorticity in STMW.
Kakehi Shigeho
Kameda Takahiko
Mori Kosuke
Uehara Kazuyuki
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