Index Catalog // ScholarsArchive@OSU

Creator:: Scott, R. K., Allen, J. S., Egbert, G. D., and Miller, R. N.
Abstract:: An idealized, linear model of the coastal ocean is used to assess the domain of influence of surface type data, in particular how much information such data contain about the ocean state at depth and how such information may be retrieved. The ultimate objective is to assess the feasibility of...
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Full Text:: ,x ivp 5 E d(1 2 z) at x 5 0, (2.5a)x V 1/2ivp 5 2SE p at z 5 0,z V xx ivp 5 2SE t at z 5 1 (2.5b)z

Creator:: Allen, J. S., Gent, Peter R., and Holm, Darryl D.
Abstract:: The f-plane linear shallow-water equations support coastal Kelvin waves. These waves propagate along the coast and have zero velocity normal to the coast. It is shown that the balance equations also support coastal Kelvin waves, but these waves differ depending upon the boundary conditions imposed. Three different boundary conditions and...
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Full Text:: is Et 1 g= · (hu) 5 0, (2.4a) SEPTEMBER 1997 2061N O T E S A N D C O R R E S P O N D E N C E

Creator:: Kurapov, A. L., Allen, J. S., and Egbert, G. D.
Abstract:: Internal tides on the continental shelf can be intermittent as a result of changing hydrographic conditions associated with wind-driven upwelling. In turn, the internal tide can affect transports associated with upwelling. To study these processes, simulations in an idealized, alongshore uniform setup are performed utilizing the hydrostatic Regional Ocean Modeling...
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Full Text:: Internal Tide on the Continental Shelf A. L. KURAPOV, J. S. ALLEN, AND G. D. EGBERT College of Oceanic

Creator:: Durski, Scott M., Allen, J. S., Egbert, G. D., and Samelson, R. M.
Abstract:: Nonlinear model simulations of a coastal upwelling system show frontal instabilities that initiate at short alongshore scales but rapidly evolve to longer wavelengths. Several factors associated with the nonstationarity of this basic state contribute to the progression in scale. A portion of the system evolution is associated with the external...
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Full Text:: . Bldg., Corvallis, OR 97331. E-mail: sdurski@coas.oregonstate.edu APRIL 2007 D U R S K I E T A L . 837

Creator:: Kurapov, A. L., Allen, J. S., Egber, G. D., and Miller, R. N.
Abstract:: Results from a model of wind-driven circulation are analyzed to study spatial and temporal variability in the bottom mixed layer (BML) on the mid-Oregon shelf in summer 2001. The model assimilates acoustic Doppler profiler velocities from two cross-shore lines of moorings 90 km apart to provide improved accuracy of near-bottom...
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Full Text:: Figs. 14c,d and 15c,d). Note the log scale for contours. SEPTEMBER 2005 K U R A P O V E T A L . 1643

Creator:: Kurapov, Alexander L., Egbert, Gary D., Allen, J. S., Miller, Robert N., Erofeeva, Svetlana Y., and Kosro, P. M.
Abstract:: A linearized baroclinic, spectral-in-time tidal inverse model has been developed for assimilation of surface currents from coast-based high-frequency (HF) radars. Representer functions obtained as a part of the generalized inverse solution show that for superinertial flows information from the surface velocity measurements propagates to depth along wave characteristics, allowing internal...
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Full Text:: inverse solution Data to be assimilated can be written in the general form d 5 l9n 1 e ,k k dk (17

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...
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Full Text:: 28_410.1131_1151 JUNE 1998 1131A L L E N A N D N E W B E R G E R q 1998

Creator:: Whitney, Michael M. and Allen, J. S.
Abstract:: This study investigates wind-driven circulation in the vicinity of the Heceta Bank complex along the Oregon shelf. Numerical experiments forced with steady winds (0.1 Pa) are conducted; upwelling and downwelling cases are compared. The asymmetric bank bathymetry is the only configurational difference from the symmetric bank runs analyzed in Part...
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Full Text:: isobath. JUNE 2009 W H I T N E Y A N D A L L E N 1299 and downwelling over banks. The Part II

Creator:: Durski, S. M., Samelson, R. M., and Allen, J. S.
Abstract:: The linear stability of a nearly time-periodic, nonlinear, coastal upwelling–downwelling circulation, over alongshore-uniform topography, driven by a time-periodic wind stress is investigated using numerical methods. The near-periodic alongshore-uniform basic flow is obtained by forcing a primitive equation numerical model of coastal ocean circulation with periodic wind stress. Disturbance growth on...
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Full Text:: equation, SEPTEMBER 2008 D U R S K I E T A L . 2057 �S �t � N�S�, �2.1� where S is the model-state

Creator:: Whitney, Michael M. and Allen, J. S.
Abstract:: This study examines how coastal banks influence wind-driven circulation along stratified continental shelves. Numerical experiments are conducted for idealized symmetric banks; the standard bank (200 km long and 50 km wide) has dimensions similar to the Heceta Bank complex along the Oregon shelf. Model runs are forced with 10 days...
Resource Type:: Article
Full Text:: and width W. JUNE 2009 W H I T N E Y A N D A L L E N 1275 runs. Choosing to vary the sign of f

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