Index Catalog // ScholarsArchive@OSU

Interactions of wind-driven and tidally-driven circulation in the Oregon coastal ocean

Creator:: Osborne, John J.
Abstract:: Influences of tidal and slower (subtidal) oceanic flows over the continental shelf and slope off Oregon are studied using a high-resolution ocean circulation model and comparative model-data analyses. The model is based on the Regional Ocean Modeling System (ROMS), a fully nonlinear, three-dimensional model (using hydrostatic and Boussinesq approximations). The...
Resource Type:: Dissertation
Full Text:: approved: ______________________________________________________ Alexander L. Kurapov

Ensemble-variational data assimilation for dynamically challenging coastal ocean circulation

Creator:: Pasmans, Ivo
Abstract:: Currently, forecasts produced by the Oregon-Washington (OR-WA) Coastal Ocean Forecast System are constrained by assimilation of only surface observations. The 4-dimensional variational (4DVAR) data assimilation (DA) algorithm is utilized to combine the model and the data, with the time-independent forecast ("background'') error covariance B. In this study, two possible improvements...
Resource Type:: Dissertation
Full Text:: Circulation Abstract approved: Alexander L. Kurapov Currently, forecasts produced by the Oregon-Washington

The leading edge of a tropical instability wave : interpretation as a gravity current

Creator:: McHugh, Elizabeth Helen
Abstract:: A sharp temperature front, oriented along the south-west corner of the leading edge of a Tropical Instability Wave (TIW) warm trough, was encountered at 0°N, 140°W on November 2, 2008 and detected by a 0.45°C increase in SST that occurred over 7 s. The distinct SST signal was observed at...
Resource Type:: Masters Thesis
Full Text:: acquired the data used within. Alexander Perlin and the Ocean Mixing Group provided processing

Childhood cancer and spatial analyses of benzene exposure in Texas

Creator:: Roberts, Mark T.
Abstract:: Childhood cancers are rare diseases that affect 188 children in Texas for every million born. Leukemia is the most common childhood cancer and accounts for roughly one third of childhood cancer cases. However, it is estimated that only 10% of childhood cancer cases can be explained by known risk factors....
Resource Type:: Dissertation
Full Text:: explained by known risk factors (Greaves and Alexander 1993, Belson, Kingsley and Holmes 2007, Little 1999

The Unpredictable Nature of Internal Tides on Continental Shelves

Creator:: Nash, Jonathan D., Kelly, Samuel M., Shroyer, Emily L., Moum, James N., and Duda, Timothy F.
Abstract:: Packets of nonlinear internal waves (NLIWs) in a small area of the Mid-Atlantic Bight were 10 times more energetic during a local neap tide than during the preceding spring tide. This counterintuitive result cannot be explained if the waves are generated near the shelf break by the local barotropic tide...
Resource Type:: Article

Stratification and mixing regimes in biological thin layers over the Mid-Atlantic Bight

Creator:: Shroyer, E. L., Benoit-Bird, Kelly J., Nash, J. D., and Moum, J. N.
Abstract:: We use density and microstructure data to characterize the properties and physical setting of optical thin layers observed over the New Jersey shelf in the summer of 2006. Layers were differentiated into two types by their vertical position in the water column, fluorescence intensity, and possibly community composition or cell...
Resource Type:: Article

Evolution of Turbulence, Heat Content, and Freshwater Lenses in the Diurnal Warm Layer

Creator:: Moulin, Aurélie J.
Abstract:: Thorough understanding of the mechanisms controlling the temperature structure in the surface mixed layer of the ocean and, in particular, accurate values of sea surface temperature are critical for properly parameterizing air-sea heat exchange and quantifying the amount of heat redistributed below the surface. It is however difficult to obtain...
Resource Type:: Dissertation
Full Text:: DeSzoeke (sea snake), Alexander Perlin (Chameleon), Jim Moum (R/V Revelle), and Aurélie Moulin (T-chain

Optics, structure and variability of the offshore Columbia River plume

Creator:: Saldías, Gonzalo
Abstract:: The Columbia River delivers the greatest amount of freshwater to the coastal ocean along the U.S. Pacific coast. This freshwater forms the Columbia River plume, a mesoscale plume with significant implications on coastal ocean physical, biological, chemical, and geological processes. The plume is transported south and offshore during the upwelling...
Resource Type:: Dissertation

Kinematics and Dynamics of a Model Eastern-boundary Poleward Undercurrent

Creator:: Duran, Rodrigo
Abstract:: A carefully calibrated primitive-equation model from 41°N to 48°N is used to study the poleward undercurrent off the US west coast. Chapter 2 describes poleward flow over the slope from Eulerian and Lagrangian perspectives. The model is robust, in the sense of several characteristics being qualitatively consistent with observational and...
Resource Type:: Dissertation
Full Text:: S. Allen, Jay McCreary, San X. Liang, Ken Brink, Thomas Toni- azzo, Alexander Kurapov, Stephen

Tidal-band and high-frequency internal variability on the central Oregon inner shelf

Creator:: Suanda, Sutara H.
Abstract:: Analogous to ocean surface waves, waves in the ocean interior also experience steepening, breaking, and dissipation as they approach the coastline. Much less is known about this internal beach. In this work, extensive moored Acoustic Doppler Current Profiler and temperature/salinity data together with optical remote sensing are combined to describe...
Resource Type:: Dissertation

ScholarsArchive@OSU

Interactions of wind-driven and tidally-driven circulation in the Oregon coastal ocean

Ensemble-variational data assimilation for dynamically challenging coastal ocean circulation

The leading edge of a tropical instability wave : interpretation as a gravity current

Childhood cancer and spatial analyses of benzene exposure in Texas

The Unpredictable Nature of Internal Tides on Continental Shelves

Stratification and mixing regimes in biological thin layers over the Mid-Atlantic Bight

Evolution of Turbulence, Heat Content, and Freshwater Lenses in the Diurnal Warm Layer

Optics, structure and variability of the offshore Columbia River plume

Kinematics and Dynamics of a Model Eastern-boundary Poleward Undercurrent

Tidal-band and high-frequency internal variability on the central Oregon inner shelf

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