Index Catalog // ScholarsArchive@OSU

Creator:: Zaron, Edward D. and Moum, James N.
Abstract:: A reexamination of turbulence dissipation measurements from the equatorial Pacific shows that the turbulence diffusivities are not a simple function of the gradient Richardson number. A widely used mixing scheme, the K-profile parameterization, overpredicts the turbulent vertical heat flux by roughly a factor of 4 in the stably stratified region...
Resource Type:: Article
Full Text:: jpo4133 2652..2664 A New Look at Richardson Number Mixing

Creator:: Shearman, R. Kipp, Barth, John A., Allen, J. S., and Haney, Robert L.
Abstract:: Several diagnoses of three-dimensional circulation, using density and velocity data from a high-resolution, upper-ocean SeaSoar and acoustic Doppler current profiler (ADCP) survey of a cyclonic jet meander and adjacent cyclonic eddy containing high Rossby number flow, are compared. The Q-vector form of the quasigeostrophic omega equation, two omega equations derived...
Resource Type:: Article
Full Text:: Features with Large Rossby Number R. KIPP SHEARMAN,* JOHN A. BARTH, AND J. S. ALLEN College of Oceanic

Creator:: Allen, J. S., Newberger, P. A., and Federiuk, J.
Abstract:: Time-dependent upwelling on the Oregon continental shelf is studied with a two-dimensional approximation, that is, spatial variations across-shelf and with depth, using the Blumberg–Mellor, finite-difference, stratified, primitive equation model. The time-dependent response of a coastal ocean at rest to constant, upwelling favorable, wind stress is examined. Topography and stratification representative...
Resource Type:: Article

Creator:: Jurisa, Joseph T. and Chant, Robert J.
Abstract:: Idealized numerical simulations utilizing the Regional Ocean Modeling System (ROMS) are carried out to examine the response of buoyant river plume systems to offshore-directed wind stresses. It is found that after a few inertial periods of wind forcing the plume becomes detached from the coast and reaches a steady state...
Resource Type:: Article
Full Text:: driven by the Ekman velocities, and is described using the ratio of the outflow Froude number and the

Creator:: Allen, J. S., Barth, J. A., and Newberger, P. A.
Abstract:: The study of intermediate models for barotropic continental shelf and slope flow fields initiated in Parts I and II is continued. The objective is to investigate the possible use of intermediate models for process and data assimilation studies of nonlinear mesoscale eddy and jet current fields over the continental shelf...
Resource Type:: Article

Creator:: Caldwell, D. R., Lien, R-C., Moum, J. N., and Gregg, M. C.
Abstract:: Although the process of restratification of the ocean surface layer at the equator following nighttime convection is similar in many ways to the process at midlatitudes, there are important differences. A composite day calculated from 15 days of consistent conditions at 140°W on the equator was compared with midlatitude observations...
Resource Type:: Article
Full Text:: ; Terray et al. 1996; Dren- JUNE 1997 1121C A L D W E L L E T A L . nan et al. 1996). The number of

Creator:: Umlauf, Lars, Smyth, William D., and Moum, James N.
Abstract:: Turbulent bottom Ekman layers are among the most important energy conversion sites in the ocean. Their energetics are notoriously complex, in particular near sloping topography, where the feedback between cross-slope Ekman transports, buoyancy forcing, and mixing affects the energy budget in ways that are not well understood. Here, the authors...
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Full Text:: ). Energetics of Bottom Ekman Layers during Buoyancy Arrest. Journal of Physical Oceanography, 45(12), 3099

Creator:: Bennett, Andrew F. and Thorburn, Michael A.
Abstract:: The generalized inverse is constructed for a nonlinear, single-layer quasigeostrophic model, together with initial conditions and a finite number of interior data. With the exception of doubly Periodic boundary condition all constraints are weak. The inverse minimizes a penalty functional that is quadratic in the errors in prior estimates of...
Resource Type:: Article

Creator:: Allen, J. S. and Newberger, P. A.
Abstract:: Intermediate models contain physics between that in the primitive equations and that in the quasigeostrophic equations. The specific objective here is to investigate the absolute and relative accuracy of several intermediate models for stratified flow by a comparison of numerical finite-difference solutions with those of the primitive equations (PE) and...
Resource Type:: Article

Creator:: Allen, J. S.
Abstract:: Intermediate models contain physics between that in the primitive equations and that in the quasigeostrophic equations and are capable of representing subinertial frequency motion over O(1) topographic variations typical of the continental slope while filtering out high-frequency gravity-inertial waves. We present here a formulation for stratified flow of a set...
Resource Type:: Article

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