Index Catalog // ScholarsArchive@OSU

Creator:: Moum, J. N., Farmer, D. M., Shroyer, E. L., Smyth, W. D., and Armi, L.
Abstract:: A single nonlinear internal wave tracked more than 100 wavelengths across Oregon’s continental shelf over a 12-h period exhibited nearly constant wave speed, c = 0.75 m s⁻¹, and amplitude, a = 15 m. The wavelength L gradually decreased from 220 m in 170-m water depth to 60 m in...
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Full Text:: , University of Rhode Island, Kingston, Rhode Island E. L. SHROYER AND W. D. SMYTH College of Oceanic and

Creator:: Wijesekera, H. W., Wang, D. W., Teague, W. J., Jarosz, E., Rogers, W. E., Fribance, D. B., and Moum, J. N.
Abstract:: Several acoustic Doppler current profilers and vertical strings of temperature, conductivity, and pressure sensors, deployed on and around the East Flower Garden Bank (EFGB), were used to examine surface wave effects on high-frequency flows over the bank and to quantify spatial and temporal characteristic of these high-frequency flows. The EFGB,...
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Full Text:: Currents over a Shelf Edge Bank H. W. WIJESEKERA, D. W. WANG, W. J. TEAGUE, E. JAROSZ, AND W. E. ROGERS

Creator:: Shroyer, E. L., Moum, J. N., and Nash, J. D.
Abstract:: Observations off the New Jersey coast document the shoaling of three groups of nonlinear internal waves of depression over 35 km across the shelf. Each wave group experienced changing background conditions along its shoreward transit. Despite different wave environments, a clear pattern emerges. Nearly symmetric waves propagating into shallow water...
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Full Text:: Nonlinear Internal Waves E. L. SHROYER, J. N. MOUM, AND J. D. NASH College of Oceanic and Atmospheric

Creator:: Moum, J. N., Caldwell, D. R., Nash, J. D., and Gunderson, G. D.
Abstract:: Observations of mixing over the continental slope using a towed body reveal a great lateral extent (several kilometers) of continuously turbulent fluid within a few hundred meters of the boundary at depth 1600 m. The largest turbulent dissipation rates were observed over a 5 km horizontal region near a slope...
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Full Text:: phoc_32_726.2113_2130.tp JULY 2002 2113M O U M E T A L . q

Creator:: Wijesekera, H. W., Jarosz, E., Teague, W. J., Wang, D. W., Fribance, D. B., Moum, J. N., and Warner, S. J.
Abstract:: Pressure differences across topography generate a form drag that opposes the flow in the water column, and viscous and pressure forces acting on roughness elements of the topographic surface generate a frictional drag on the bottom. Form drag and bottom roughness lengths were estimated over the East Flower Garden Bank...
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Full Text:: ., Jarosz, E., Teague, W. J., Wang, D. W., Fribance, D. B., Moum, J. N., & Warner, S. J. (2014

Creator:: Moum, J. N., Klymak, J. M., Nash, J. D., Perlin, A., and Smyth, W. D.
Abstract:: Winter stratification on Oregon’s continental shelf often produces a near-bottom layer of dense fluid that acts as an internal waveguide upon which nonlinear internal waves propagate. Shipboard profiling and bottom lander observations capture disturbances that exhibit properties of internal solitary waves, bores, and gravity currents. Wavelike pulses are highly turbulent...
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Full Text:: University of Victoria, Victoria, British Columbia, Canada J. D. NASH, A. PERLIN, AND W. D. SMYTH College

Creator:: Gargett, Ann E. and Moum, J. N.
Abstract:: The authors report direct measurements of density flux at a single depth in a turbulent tidal flow, made by towing a CTD beside the vertical beam of a modified acoustic Doppler current profiler. The direct flux estimates are compared with indirect estimates of density flux based on simultaneous microscale profiler...
Resource Type:: Article

Creator:: Smyth, W. D., Moum, J. N., and Caldwell, D. R.
Abstract:: The time evolution of mixing in turbulent overturns is investigated using a combination of direct numerical simulations (DNS) and microstructure profiles obtained during two field experiments. The focus is on the flux coefficient Γ, the ratio of the turbulent buoyancy flux to the turbulent kinetic energy dissipation rate ϵ. In...
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Full Text:: kinetic energy evolves in accordance with d 1 u9u9 5 S 2 B 2 ^e & , (27)i i D7 8dt 2 D in which S 5 2

Creator:: Moum, J. N., Nash, J. D., and Smyth, W. D.
Abstract:: Extended measurements of temperature fluctuations that include the turbulence wavenumber band have now been made using rapidly sampled fast thermistors at multiple depths above the core of the Equatorial Undercurrent on the Tropical Atmosphere Ocean (TAO) mooring at 0°, 140°W. These measurements include the signature of narrowband oscillations as well...
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Full Text:: , (d) meridional velocity, and (e) squared shear. The xpod depths are denoted by the short horizontal

Creator:: Skyllingstad, Eric D., Smyth, W. D., Moum, J. N., and Wijesekera, H.
Abstract:: The response of the upper ocean to westerly wind forcing in the western equatorial Pacific was modeled by means of large-eddy simulation for the purpose of comparison with concurrent microstructure observations. The model was initialized using currents and hydrography measured during the Coupled Ocean–Atmosphere Response Experiment (COARE) and forced using...
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Full Text:: L L I N G S T A D E T A L . ]u]u ]wji^u0u0& 5 2K 1 , ^u0w& 5 2K ,i j m i h1 2]x ]x ]xj i i ]uP 2

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