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Dissipation Measurements with χpods on Moored Profilers in Luzon Strait

Explore χpods for dissipation measurements on moored profilers in Luzon Strait, with precise depth and spectrum analysis. Tests conducted in Puget Sound and deployments in IWISE missions showcase innovative sensor technology. Discover insights on turbulence properties and theoretical spectra.

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Dissipation Measurements with χpods on Moored Profilers in Luzon Strait

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  1. Profiling Dissipation Measurements using χpods on Moored Profilers in Luzon Strait fast thermistors on APL MP 2 pointed up 2 pointed down Preliminary Tests Puget Sound December 2009 refinements IWISE 2010 Deployment mooring MPN July 2010 IWISE 2011 Deployment moorings N1, N2 Moum (OSU) Perlin (OSU) Nash (OSU) Alford (APL/UW)

  2. Profiling Dissipation Measurements using χpods on Moored Profilers in Luzon Strait spectrum fit to theoretical form defines χ data example Kraichnan theoretical spectrum εχ=N2χ/2ΓTz2

  3. Profiling Dissipation Measurements using χpods on Moored Profilers in Luzon Strait depth variations / 200 m vertical averages mooring N2 local KE 1150-1750 m ε image plot constructed from daily-averaged profiles

  4. New mean speed / dissipation sensor for use on χpods and in general on moorings inexpensive,lightweight, low power, standalone velocity sensor χpod mooring N1 – χpod at 2000 m 1 day time series dissipation sensor at high f speed sensor at low f full characterization of sensor including wind tunnel tests are ongoing ε=2x10-7 m2s-3

  5. Profiling Dissipation Measurements using χpods on Moored Profilers in Luzon Strait fast thermistors on APL MP 2 pointed up 2 pointed down Products → Thorpe (overturn) scales χT temperature variance dissipation rate KT turbulence diffusivity (Osborn-Cox) εtke dissipation rate (indirect) Km turbulence viscosity Moum (OSU) Nash (OSU) Alford (APL/UW)

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