Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 33 for “"ocean mixing"”.
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Ocean mixing and heat transport beneath Antarctic ice shelves
Ocean-driven melting of floating ice shelves is currently the main process controlling Antarctica’s contribution to sea level rise. However, despite major advances in the study of ice shelf-ocean interaction over recent decades, key processes governing basal melting remain poorly understood, …
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Parameter estimation and adaptive modeling studies in ocean mixing
… of physical and numerical parameters of ocean models. This is one step of "adaptive modeling." Adaptive modeling consists of the automated adjustment of self-evaluating models in order to best represent an observed system. In the case of dynamic parameterizations, self-modifying schemes …
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Boundary layer dynamics and deep ocean mixing in Mid-Atlantic Ridge canyons
Physical oceanographers have known for several decades the total amount of abyssal mixing and upwelling required to balance the deep-water formation, but are still working to understand the mechanisms and locations—how and where it happens. From observational studies, we know that areas of rough …
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Boundary layer dynamics and deep ocean mixing in Mid-Atlantic Ridge canyons
Physical oceanographers have known for several decades the total amount of abyssal mixing and upwelling required to balance the deep-water formation, but are still working to understand the mechanisms and locations-how and where it happens. From observational studies, we know that areas of rough …
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Wind, sea ice, inertial oscillations and upper ocean mixing in Marguerite Bay, Western Antarctic Peninsula : observations and modeling
Two years of moored oceanographic and automatic weather station data which span the winter ice seasons of 2001-2003 within Marguerite Bay on the western Antarctic Peninsula (wAP) shelf were collected as part of the Southern Ocean Global Ocean Ecosystems Dynamics program. In order to characterize …
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Wind, sea ice, inertial oscillations and upper ocean mixing in Marguerite Bay, Western Antarctic Peninsula : observations and modeling
Two years of moored oceanographic and automatic weather station data which span the winter ice seasons of 2001-2003 within Marguerite Bay on the western Antarctic Peninsula (wAP) shelf were collected as part of the Southern Ocean Global Ocean Ecosystems Dynamics program. In order to characterize …
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Characterising the response of the mixed and the transitional layers to the passage of storms in the Sub-Antarctic Zone
Mid-latitude storms are common in the Southern Ocean (SO) and have been shown to drive substantial vertical mixing, leaving behind wakes of perturbed upper ocean. The vertical extent and duration of the impact of these storms on the upper ocean remains unknown in this region, partly due to lack of …
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On the maintenance of weak meridional temperature gradients during warm climates
… and interactive, tropical cyclone dependent ocean mixing is sufficient to maintain a weak temperature gradient. I examine planetary wave generation, the energetics of the general circulation, and vertical wave propagation in a general circulation model with a resolved stratosphere forced with …
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Influence of Mesoscale Eddies on the Deep Ocean Dynamics over the East Pacific Rise near 10N
Mesoscale eddies are ubiquitous in the World Ocean and dominate the energy content on subinertial time scales. However, due to a lack of in situ data from the deep ocean, most previous work has focused on signals near the sea-surface, that is, the signals of mesoscale eddies in the deep ocean and …
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Nitrogen uptake and phytoplankton productivity in the changing Barents Sea
… sea ice changes and the resultant<br/>changes in ocean mixing are affecting nutrient supply, uptake and cycling and will<br/>have large-scale consequences for the distribution and magnitude of primary production<br/>throughout the Arctic Ocean. The objective of this study is to quantify …
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Internal tide generation by tall ocean ridges
… dissipation of internal tides contributes to ocean mixing, thereby playing an important role in the circulation of the ocean. Strong internal tides can also evolve into internal wave solitons, which affect acoustic communication, offshore structures and submarine navigation. This thesis …
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Coastal ocean variability off the coast of Taiwan in response to Typhoon Morakot : river forcing, atmospheric forcing, and cold dome dynamics
The ocean is a complex, constantly changing, highly dynamical system. Prediction capabilities are constantly being improved in order to better understand and forecast ocean properties for applications in science, industry, and maritime interests. Our overarching goal is to better predict the ocean …
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Coastal ocean variability off the coast of Taiwan in response to typhoon Morakot : river forcing, atmospheric forcing, and cold dome dynamics
The ocean is a complex, constantly changing, highly dynamical system. Prediction capabilities are constantly being improved in order to better understand and forecast ocean properties for applications in science, industry, and maritime interests. Our overarching goal is to better predict the ocean …
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Abyssal mixing from bottom boundary effects in Mid-Atlantic Ridge flank canyons
… a previously neglected mechanism for abyssal ocean mixing using bottom boundary layer dynamics. Abyssal mixing and the associated upward buoyancy fluxes are necessary to balance the sinking of dense waters at high latitudes and to close the global overturning circulation. Previous studies have …
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The vertical structure of the wind-driven circulation
… about the role of internal waves in horizontal ocean mixing. The problem is examined using a variety of models and techniques. The most important result is (23.2) which is an expression for the effective horizontal diffusivity produced by the interaction of vertical diffusivity and oscillatory …
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The production of temperature and salinity variance and covariance : implications for mixing
… role in setting temperature and salinity in the ocean. A number of recent estimates of the global oceanic freshwater balance as well as the global oceanic surface net heat flux are used to investigate the effects of heat- and freshwater forcing at the ocean surface. Such forcing induces changes …
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Improving Estuarine Water Quality in South Florida: A Quantitative Evaluation of The Efficacy of a Local Nutrient Ordinance
… such as light attenuation, upstream loading and ocean mixing which influence water quality in the two locations differ indicating a need for different management approaches in each of the municipalities.</p>
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The production of temperature and salinity variance and covariance : implications for mixing
… role in setting temperature and salinity in the ocean. A number of recent estimates of the global oceanic freshwater balance as well as the global oceanic surface net heat flux are used to investigate the effects of heat- and freshwater forcing at the ocean surface. Such forcing induces changes …
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Abyssal mixing from bottom boundary effects in Mid-Atlantic Ridge flank canyons
… a previously neglected mechanism for abyssal ocean mixing using bottom boundary layer dynamics. Abyssal mixing and the associated upward buoyancy fluxes are necessary to balance the sinking of dense waters at high latitudes and to close the global overturning circulation. Previous studies have …
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Characterization of air-sea gas exchange processes and dissolved gas/ice interactions using noble gases
… infer rates of biological activity in the upper ocean or the uptake of radiatively important "greenhouse" gases, the noble gases are used to characterize and quantify the physical processes affecting the dissolved gases in aquatic environments. The processes of vertical mixing, gas exchange, air …
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