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Understanding Small-Scale Ocean Physics: Turbulence and Hydraulic Flow Dynamics

This study focuses on the small-scale physics of the ocean, examining fluid dynamics at scales from millimeters to kilometers that traditional circulation models do not capture. Key areas include the dynamics of stratified turbulence, the effects of turbulence on drag and mixing, and instability mechanisms leading to turbulence. The research also explores internal gravity waves, solitary waves, and near-inertial waves, as well as how topographic features influence hydraulically-controlled flows and coastal jets. New instrumentation and observation techniques are developed to enhance our understanding of these phenomena.

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Understanding Small-Scale Ocean Physics: Turbulence and Hydraulic Flow Dynamics

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Presentation Transcript

  1. Moum • Small-Scale Ocean Physics • fluid dynamics at scales that are not • resolved by circulation models • millimeters to O(100 m) to kilometers hydraulic flows over topographic obstacles large amplitude, nonlinear internal waves

  2. Moum • Small-Scale Ocean Physics • dynamics of stratified turbulence • effects of turbulence (drag, mixing) • instability mechanisms causing turbulence • internal gravity waves • internal solitary waves • near-inertial waves • topographic effects – hydraulically-controlled flows • sheared flows – coastal jets, equatorial undercurrents http://mixing.coas.oregonstate.edu

  3. Moum • Small-Scale Ocean Physics • How we study Small-Scale Ocean Physics • 1st and foremost get the best observations possible • development of new instrumentation • adaptation of instrumentation to broaden our observational perspective • develop simple physical models • important links to small-scale/turbulence modeling http://mixing.coas.oregonstate.edu

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