Index Catalog // ScholarsArchive@OSU

Creator:: Smyth, W. D.
Abstract:: The linear theory of double diffusive interleaving is extended to take account of baroclinic effects. This study goes beyond previous studies by including the possibility of modes with nonzero tilt in the alongfront direction, which allows for advection by the baroclinic frontal flow. This requires that the stability equations be...
Resource Type:: Article
Full Text:: Instabilities of a Baroclinic, Double Diffusive Frontal Zone W

Creator:: Thomson, Jim, Schwendeman, Michael S., Zippel, Seth F., Moghimi, Saeed, Gemmrich, Johannes, and Rogers, W. Erick
Abstract:: Observations of winds, waves, and turbulence at the ocean surface are compared with several analytic formulations and a numerical model for the input of turbulent kinetic energy by wave breaking and the subsequent dissipation. The observations are generally consistent with all of the formulations, although some differences are notable at...
Resource Type:: Article
Full Text:: Surface Layer JIM THOMSON, MICHAEL S. SCHWENDEMAN, AND SETH F. ZIPPEL Applied Physics Laboratory

Creator:: Denbo, D. W. and Allen, J. S.
Abstract:: The generation of an alongshore mean flow by the nonlinear interaction of forced barotropic shelf waves over a continental margin is studied using a wind-forced, ƒ-plane model with bottom friction in an attempt to develop a model for poleward eastern boundary undercurrents. It is assumed that the Rossby number is...
Resource Type:: Article

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,...
Resource Type:: Article
Full Text:: Currents over a Shelf Edge Bank H. W. WIJESEKERA, D. W. WANG, W. J. TEAGUE, E. JAROSZ, AND W. E. ROGERS

Creator:: Smyth, W. D. and Kimura, S.
Abstract:: Mixing due to sheared salt fingers is studied by means of direct numerical simulations (DNS) of a double-diffusively unstable shear layer. The focus is on the “moderate shear” case, where shear is strong enough to produce Kelvin–Helmholtz (KH) instability but not strong enough to produce the subharmonic pairing instability. This...
Resource Type:: Article
Full Text:: , t)5 f (x, y, z, t). Upper and lower boundaries at z 5 6Lz/2 are impermeable (w 5 0) and flux free

Creator:: Choboter, P. F., Samelson, R. M., and Allen, J. S.
Abstract:: A two-dimensional, frictionless, nonlinear model of coastal upwelling is reexamined. The model has been solved previously at steady state and as an initial-value problem. The previous solution to the initial-value problem is inconsistent with the steady-state solution. A new solution to the spinup problem is presented that approaches the existing...
Resource Type:: Article
Full Text:: , hydrostatic motion of a stratified fluid: �u* �t* � u* �u* �x* � �* �u* �y* � w* �u* �z* � f�* � � 1 �0

Creator:: Mazzini, Piero L. F., Barth, John A., Shearman, R. Kipp, and Erofeev, A.
Abstract:: During fall/winter off the Oregon coast, oceanographic surveys are relatively scarce because of rough weather conditions. This challenge has been overcome by the use of autonomous underwater gliders deployed along the Newport hydrographic line (NH-Line) nearly continuously since 2006. The discharge from the coastal rivers between northern California and the...
Resource Type:: Article
Full Text:: Fall and Winter Buoyancy-Driven Coastal Currents off Oregon during Fall and Winter Mazzini, P. L. F

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...
Resource Type:: Article
Full Text:: , K1, O1, f (inertial), 4-day, and 17-day motions. SEPTEMBER 2014 W I J E SEKERA ET AL . 2415 the

Creator:: Smyth, W. D., Burchard, H., and Umlauf, L.
Abstract:: Interleaving motions on a wide, baroclinic front are modeled using a second-moment closure to represent unresolved fluxes by turbulence and salt fingering. A linear perturbation analysis reveals two broad classes of unstable modes. First are scale-selective modes comparable with interleaving as observed in oceanic fronts. These correspond well with observations...
Resource Type:: Article
Full Text:: -Moment Closure Approach W. D. SMYTH, H. BURCHARD, AND L. UMLAUF Leibniz Institute for Baltic Sea

Creator:: Smyth, W. D. and Winters, K. B.
Abstract:: Motivated by the tendency of high-Prandtl-number fluids to form sharp density interfaces, the authors investigate the evolution of Holmboe waves in a stratified shear flow through direct numerical simulation. Like their better-known cousins, Kelvin–Helmholtz waves, Holmboe waves lead the flow to a turbulent state in which rapid irreversible mixing takes...
Resource Type:: Article
Full Text:: phoc_33_322.694_711.tp 694 VOLUME 33J O U R N A L O F P H Y S I C A L O

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