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.
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Showing 1 to 20 of 66 for “"Coastal ocean"”.
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Numerical modelling of the coastal ocean off Tanzania
In this model study of the coastal ocean off Tanzania, the Regional Ocean Modelling System (ROMS) was employed to model the coastal ocean off Tanzania over the domain of 5°N-15°S and 38-55°E. It was integrated for ten years with monthly mean Comprehensive Ocean and Atmosphere Data Sets (COADS) …
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Demographics of lytic viral infection of coastal ocean Vibrio
Viral predation on bacteria in the ocean liberates carbon from the particulate fraction, where it is accessible to higher trophic levels, and redirects it to the dissolved fraction, where it supports microbial growth. Although viruses are highly abundant in the ocean little is known about how their …
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Interaction between the coastal ocean and the estuarine systems
… interaction between an estuary and its adjacent coastal ocean. This change in the interaction determines how the wind-induced changes in the estuary influence the near-shore coastal ocean and vice-versa.</p><p>The first chapter examines the water properties in the near-shore coastal region close …
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Demographics of lytic viral infection of coastal ocean vibrio
Viral predation on bacteria in the ocean liberates carbon from the particulate fraction, where it is accessible to higher trophic levels, and redirects it to the dissolved fraction, where it supports microbial growth. Although viruses are highly abundant in the ocean little is known about how their …
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Ecological forces affecting microbial eukaryotes in the coastal ocean
Marine microbial eukaryotes (protists) play a central role in the global biogeochemical cycles. Protist communities comprise carbon-fixing eukaryotic phytoplankton, which comprise the base of the marine food web, heterotrophic protists, which are predators of other microbes, and mixotrophs, which …
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Path planning and adaptive sampling in the coastal ocean
… are basic, indispensable problems. In the oceanic and atmospheric environments, the concurrent use of multiple mobile sensing platforms in unmanned missions is growing very rapidly. Opportunities for a paradigm shift in the science of autonomy involve the development of fundamental theories …
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Ecology and population structure of Vibrionaceae in the coastal ocean
Extensive genetic diversity has been discovered in the microbial world, yet mechanisms that shape and maintain this diversity remain poorly understood. This thesis investigates to what extent populations of the gamma-proteobacterial family, Vibrionaceae, are ecologically specialized by …
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Ecology and population structure of vibrionaceae in the coastal ocean
Extensive genetic diversity has been discovered in the microbial world, yet mechanisms that shape and maintain this diversity remain poorly understood. This thesis investigates to what extent populations of the gamma-proteobacterial family, Vibrionaceae, are ecologically specialized by …
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Coastal Ocean Morphodynamics and the Resulting Erosion and Deposition: An Analytical Approach
<p>Coastal ocean morphodynamics is the study of the morphological change of the coastal ocean system. Environmental conditions, such as climatic and geological controls, are exogenous inputs of the system, which are responsible for geographic variation among coastal oceans. In the coastal ocean …
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Niche adaptations of the vibrionaceae, from the coastal ocean to the laboratory
Microorganisms play a significant role in biogeochemical cycling, thus their dynamics in the environment influence the biosphere. Yet how do features of the environment - such as abiotic conditions, resources, and predators - influence their activity and abundance, i.e. what constitutes their …
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Natural and synthetic estrogens in wastewater treatment plant effluent and the coastal ocean
… at picomolar levels in wastewater effluent and coastal seawater. The method was validated using treated effluent from the greater Boston metropolitan area, where we found that halogenated estrogens represented over 50% of the total estrogen discharge flux. A kinetic model of estrogen …
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Mimetic Coastal Ocean Modeling In General Coordinates And Using Machine Learning Based Predictions
… are a ubiquitous and fundamental aspect of the coastal ecosystem understanding. However, they rely on extreme geographical conditions and precise dimensional equilibrium to be captured accurately. The General Curvilinear Coastal Ocean Model (GCCOM) was validated, serial and parallel versions for …
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Natural and synthetic estrogens in wastewater treatment plant effuent and the coastal ocean
… at picomolar levels in wastewater effluent and coastal seawater. The method was validated using treated effluent from the greater Boston metropolitan area, where we found that halogenated estrogens represented over 50 % of the total estrogen discharge flux. A kinetic model of estrogen …
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A numerical investigation of the influence of monsoonal wind reversals over the East African coastal ocean
… the variability in the East African coastal ocean (Somali basin) due to the monsoon transition is investigated. The monsoon is characterized by wind reversals and seasonality in the precipitation of a region. The surface circulation of the western Indian Ocean during the summer (JAS) …
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Temporal variability in chemical cycling of the subterranean estuary and associated chemical loading to the coastal ocean
At the land-ocean interface, terrestrial groundwater interacts with seawater to form a subterranean estuary, which can play host to dynamic biogeochemical cycling of nutrients, trace metals and radionuclides. This chemically altered groundwater enters the ocean through submarine groundwater …
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Temporal variability in chemical cycling of the subterranean estuary and associated chemical loading to the coastal ocean
At the land-ocean interface, terrestrial groundwater interacts with seawater to form a subterranean estuary, which can play host to dynamic biogeochemical cycling of nutrients, trace metals and radionuclides. This chemically altered groundwater enters the ocean through submarine groundwater …
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Nutrient and Carbon Dynamics in the Chesapeake Bay Outflow Plume and Their Effect on the Coastal Ocean Environment
… nutrient and carbon fluxes from estuaries to the coastal ocean are poorly constrained. Nutrient and carbon cycling in highly productive regions like the Chesapeake Bay outflow plume and surrounding coastal environments greatly affect our global understanding of carbon cycling. The overall …
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Characterizing the impact of underwater glider observations on the Navy Coastal Ocean Model (NCOM) in the Gulf Stream Region
… are assimilated into the operational Navy Coastal Ocean Model (NCOM). An investigation of the forecast-to-nowcast changes in the model for 2017 demonstrates the impact of the observations on the model. The magnitude of model change as a function of distance from nearest new observation …
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Partitioning the influence of anthropogenic and oceanic nutrient fluxes in the coastal ocean, and the question of cultural eutrophication
… Australian coast off New South Wales. This coastal region is frequently impacted by the western boundary flow of the East Australian Current (EAC), and anthropogenic discharges from major estuaries, and sewage outfalls within the Newcastle-Sydney-Wollongong conurbation. These coastal waters …
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