Index Catalog // ScholarsArchive@OSU

Creator:: Bowen, A. J. and Holman, Robert A.
Abstract:: A new class of nearshore waves based on the shear instability of a steady longshore current is discussed. The dynamics depend on the conservation of potential vorticity but with the background vorticity field, traditionally the role of Coriolis in larger scale flows, supplied by the shear structure of the longshore...
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Full Text:: probably have a profound effect on cross-shore mixing as well as longshore current dissipation, we expect

Creator:: Sallenger, Asbury H., Jr. and Holman, Robert A.
Abstract:: Measurements of cross-shore flow were made across the surf zone during a storm as a nearshore bar became better developed and migrated offshore. Measured infragravity band spectra were compared to synthetic spectra calculated numerically over the natural barred profile assuming a white run-up spectrum of leaky mode or high-mode edge...
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Full Text:: would be S,(y, a). As in earlier work, the synthetic spectra fit the measured spectra reasonably well

Creator:: Adams, Katherine A., Barth, John A., and Chan, Francis
Abstract:: In the productive central-Oregon coastal upwelling environment, wind-driven upwelling, tides, and topographic effects vary across the shelf, setting the stage for varied biogeochemical responses to physical drivers. Current, temperature, salinity, and dissolved oxygen (DO) measurements from three moorings deployed during the upwelling seasons of 2009–2011 off the central-Oregon coast are...
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Full Text:: regions, a well- ventilated inner shelf and a midshelf vulnerable to hypoxia (986 15 days annually). On

Creator:: Mazzini, P. L. F. and Barth, John A.
Abstract:: Several mechanisms can drive vertical velocities in the coastal ocean, including wind-forcing and through gradients in the vorticity field generated by flow-topography interactions. A two-layer, steady, wind-driven, analytical model is applied to the major upwelling systems of Brazil : Cabo Frio (CF) and Cabo de Santa Marta (CSM) regions. Comparisons...
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Full Text:: A comparison of mechanisms generating vertical

Creator:: Holman, Rob, Plant, Nathaniel, and Holland, Todd
Abstract:: A three-part algorithm is described and tested to provide robust bathymetry maps based solely on long time series observations of surface wave motions. The first phase consists of frequency-dependent characterization of the wave field in which dominant frequencies are estimated by Fourier transform while corresponding wave numbers are derived from...
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Full Text:: variability were well resolved. A single ground truth survey from a dissipative, low-sloping beach (Agate

Creator:: Mueller, R. D., Padman, L., Dinniman, M. S., Erofeeva, S. Y., Fricker, H. A., and King, M. A.
Abstract:: Basal melting of ice shelves around Antarctica contributes to formation of Antarctic Bottom Water and can affect global sea level by altering the offshore flow of grounded ice streams and glaciers. Tides influence ice shelf basal melt rate (w(b)) by contributing to ocean mixing and mean circulation as well as...
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Full Text:: circulation as well as thermohaline exchanges with the ice shelf. We use a three-dimensional ocean model

Creator:: Catalán, Patricio A., Haller, Merrick C., and Plant, William J.
Abstract:: The microwave backscatter properties of surf zone waves are analyzed using field observations. By utilizing a preexisting, independent, water surface discrimination technique, the microwave returns were extracted along individual waveforms and the data from shoaling (steepening) waves, surf zone breaking waves, and remnant foam were separated and quantified. In addition,...
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Full Text:: nonbreaking profiles show polarization ratios well below 0 dB (e.g., profiles a to f in Figures 8b and 8c

Creator:: Abbott, Mark R., Brink, Kenneth H., Booth, D. R., Blasco, Dolors, Codispoti, L. A., Niiler, Pearn P., and Ramp, Steven R.
Abstract:: A Lagrangian drifter was deployed in a cold filament off northern California as part of the Coastal Transition Zone program. The drifter was equipped with an optical package (consisting of a spectroradiometer, a fluorometer, and a beam transmissometer) suspended at 8.5-m depth and a water sampler suspended at 16.3-m depth....
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Full Text:: Observations of Phytoplankton and Nutrients From a Lagrangian

Creator:: Swenson, Mark S., Niiler, Pearn P., Brink, Kenneth H., and Abbott, Mark R.
Abstract:: We use the position fixes and temperature readings from 56 Tristar-II mixed-layer drifters, in conjunction with advanced very high resolution radiometer images, to provide a description of the mesoscale variability of the flows associated with cold-water filaments in the California Current system off northern California in July 1988. We find...
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Full Text:: Drifter Observations of a Cold Filament off Point Arena

Creator:: Miller, R. N. and Ehret, L. L.
Abstract:: The implicit particle filter is applied to a stochastically forced shallow water model of nearshore flow, and found to produce reliable state estimates with tens of particles. The state vector of this model consists of a height anomaly and two horizontal velocity components at each point on a 128 x...
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Full Text:: fairly well, as one might expect. The ensemble collapses down to a single particle fairly frequently, but

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