Index Catalog // ScholarsArchive@OSU

Creator:: Rivas, David and Samelson, R. M.
Abstract:: Regional ocean circulation along the Oregon coast is studied numerically for forcing fields derived from year 2005 and climatological-mean conditions. The primary object is to study directly the Lagrangian pathways by which fluid arrives in the Oregon upwelling zone. Roughly half of the upwelling fluid is found to arrive in...
Resource Type:: Article
Full Text:: these fields; unfortunately, in general, no estimate of the near-coast wind field is available that is

Creator:: Inoue, Ryuichiro and Smyth, William D.
Abstract:: The dependence of mixing efficiency on time-varying forcing is studied by direct numerical simulation (DNS) of Kelvin–Helmholtz (KH) instability. Time-dependent forcing fields are designed to reproduce a wavelike oscillation by solving the equations of motion in a tilted coordinate frame and allowing the tilt angle to vary in time. Mixing...
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Full Text:: no full development of KH billows due to the slower growth of the billows. Then, Mnc becomes close

Creator:: Matano, R. P., Beier, E. J., Strub, P. T., and Tokmakian, R.
Abstract:: In this article the authors examine the kinematics and dynamics of the seasonal cycle in the western Indian Ocean in an eddy-permitting global simulation [Parallel Ocean Circulation Model, model run 4C (POCM-4C)]. Seasonal changes of the transport of the Agulhas Current are linked to the large-scale circulation in the tropical...
Resource Type:: Article
Full Text:: austral summer and the austral autumn. Although there is no evidence to prove the existence of such a

Creator:: Nash, Jonathan D., Kunze, Eric, Toole, John M., and Schmitt, Ray W.
Abstract:: Observations of turbulence, internal waves, and subinertial flow were made over a steep, corrugated continental slope off Virginia during May–June 1998. At semidiurnal frequencies, a convergence of low-mode, onshore energy flux is approximately balanced by a divergence of high-wavenumber offshore energy flux. This conversion occurs in a region where the...
Resource Type:: Article
Full Text:: . For example, 67%–89% of the energy flux is carried by the first two modes over Mendocino Escarpment

Creator:: Kirincich, Anthony R. and Barth, John A.
Abstract:: The spatial and temporal variability of inner-shelf circulation along the central Oregon coast during the 2004 upwelling season is described using a 70-km-long array of moorings along the 15-m isobath. Circulation at three stations located onshore of a submarine bank differed from that of a station north of the bank,...
Resource Type:: Article
Full Text:: southward alongshelf flow occurred north of the bank, no alongshelf flow occurred onshore of the northern

Creator:: Allen, J. S. and Newberger, P. A.
Abstract:: Model studies of two-dimensional, time-dependent, wind-forced, stratified downwelling circulation on the continental shelf have shown that the near-bottom offshore flow can develop time- and space-dependent fluctuations involving spatially periodic separation and reattachment of the bottom boundary layer and accompanying recirculation cells. Based primarily on the observation that the potential vorticity...
Resource Type:: Article
Full Text:: condition of no-slip. Cases where the resultant Ekman transport was either upslope (upwelling) or downslope

Creator:: Dever, E. P.
Abstract:: Velocity time series are used to study cross-shelf circulation on the northern California shelf and to examine classical ideas of locally wind-forced cross-shelf circulation. A simple linear two-dimensional model of cross-shelf transport is compared to estimates of cross-shelf transport in the near surface, interior, and near bottom. In winter, when...
Resource Type:: Article
Full Text:: Observations from both 1982 summer and 1988/89 winter are presented for the sake of completeness. How- ever

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...
Resource Type:: Article
Full Text:: no difference in the turbulence statistics of interest here. The model is initialized with a parallel

Creator:: Jin, Xin, Dong, Changming, Kurian, Jaison, McWilliams, James C., Chelton, Dudley B., and Li, Zhijin
Abstract:: Observations, primarily from satellites, have shown a statistical relationship between the surface wind stress and underlying sea surface temperature (SST) on intermediate space and time scales, in many regions inclusive of eastern boundary upwelling current systems. In this paper, this empirical SST–wind stress relationship is utilized to provide a simple...
Resource Type:: Article
Full Text:: alongshore current are shown in Fig. 1; a level of no motion is assumed for the model base at H 5 500 m. In

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:: information about temporal evolution, the Q-vector form of the quasigeostrophic (QG) omega equation (Hoskins

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