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 31 for “"Tidal Forcing"”.
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The Response of Antarctic Ice Streams to Tidal Forcing
… ice, particularly motivated by observations of tidally-driven acceleration of Antarctic glaciers. In the first chapter, I review recent observations of spatial and temporal variability in ice velocity, existing simplified models of the flow of Antarctic ice streams, and sources of uncertainty in …
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Sub-Maximal Exchange Flow over a Sill with Barotropic Forcing
… of the dense water in the dense basin, and the tidal forcing. Exchange flow can be “maximal” or “sub-maximal”. The flow is “maximal” if raising the interface in the dense basin (presumably by modifying light water to be dense) does not further increase the exchange flow through the strait. While …
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A numerical study of the interaction of tidal flows in the Mersey estuary and Liverpool bay
… The bay model has been used to provide real time tidal forcing information to the river model across the common boundary of two models. After the joined model was set up and operated satisfactorily, the numerical experiments were carried out in Liverpool bay and the Mersey estuary to study the …
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Tidal Dissipation in Extrasolar Planets
… orbits have been circularized likely due to tidal dissipation inside the planets. These exoplanets share with our own Jupiter at least one trait in common: when they are subject to periodic tidal forcing, they behave like a lossy spring, with a tidal ``quality factor'', Q, of order 10^5. This …
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Modelling the oceanic circulation in the Delagoa Bight
… and without the inner grid or with or without tidal forcing. Using only the outer coarse resolution grid, the first experiment (DELAGI) does not include tidal forcing whereas tides are included in the second (DELAG-II) experiment. DELAG-III and DELAG-IV both use the inner higher resolution grid …
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Spatial and temporal variability of tide-induced salt flux in a partially mixed estuary
Mechanisms for the tidal component of salt flux in the Hudson River estuary are investigated using a 3D numerical model. Variations with river discharge, fortnightly tidal forcing, and along channel variability are explored. Four river discharge conditions were considered: 1200 m3 s-1, 600 m3 s-1, …
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Spatial and temporal variability of tide-induced salt flux in a partially mixed estuary
Mechanisms for the tidal component of salt flux in the Hudson River estuary are investigated using a 3D numerical model. Variations with river discharge, fortnightly tidal forcing, and along channel variability are explored. Four river discharge conditions were considered: 1200 m3 s-1, 600 m3 s-1, …
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Influence of Tides and Mesoscale Eddies in the Ross Sea
… model with four hindcast simulations are used. Tidal forcing is added to simulations and mesoscale eddies are resolved by changing the horizontal grid resolution from 5 to 1.5 km. Simulations cover 1.5 years, ending at the time of the PRISM-RS cruise in early 2012. An extended 20 year simulation …
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Upper ocean variability and tropical cyclones in the South West Indian Ocean
… energetic in terms of mesoscale ocean eddies and tidal forcing. Changes in upper ocean characteristics in the Mozambique Channel due to tidal forcing are examined as they may have significant impacts on the upper ocean structure and thus influence tropical cyclones which often occur in this …
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Hydrodynamics of a multiple tidal inlet system : Katama Bay, Martha’s Vineyard, MA
… of Katama Inlet has a dominant effect on tidal distortion and bay circulation. As Katama inlet lengthened, narrowed, and shoaled between 2011 and 2014, the relative effects of friction (observed and simulated) increased greatly, resulting in reduced circulation energy, an increase in the …
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Hydrodynamics of a multiple tidal inlet system : Katama Bay, Martha's Vineyard, MA
… of Katama Inlet has a dominant effect on tidal distortion and bay circulation. As Katama inlet lengthened, narrowed, and shoaled between 2011 and 2014, the relative effects of friction (observed and simulated) increased greatly, resulting in reduced circulation energy, an increase in the …
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Effects of Cerebral Blood Flow and Temperature on Executive Function During Moderate Hyperthermia
… as opposed to thermal perception changes. An end-tidal forcing system was used to maintain eucapnia and baseline CBF in the isocapnic trial during the hypocapnia-induced CBF reduction. Repeated measures analysis of variance indicated that an increase of 5°C in mean skin temperature impaired …
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Water Quality Study and Plume Behavior Modeling for Lake Pontchartrain at the Mouth of the Tchefuncte River
… in good agreement. The model used river flow and tidal forcing without wind shear. The model verified that that the wet weather effect lasted for two to three-day after a high storm water discharges at the mouth of the river.
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From Representative Period Selection to Process‐Based Sediment Dynamics
… Frisian Wadden Sea (NFWS) is a mixed-energy tidal system of interconnected tidal flats, channels, ebb-tidal deltas and barrier islands, in which tides, waves and wind jointly govern sediment transport. Despite its ecological and morphological significance, the region remains comparatively …
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Electrical Conductivity and Resistivity Study of Heterogeneous Sediment in Inwood Hill Park, Manhattan, NY
… complex hydrological processes. The inlet is a tidal flat, which contains brackish water; a mixture of saltwater and freshwater. The area was modified by man, built on a shell bed and contains heterogeneous sediment. One field adjacent to the inlet contains several small sinkholes. Electrical …
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Seafloor ploughmarks on the mid-Norwegian continental shelf reveal iceberg trajectories during the last glacial period
… to the northwest suggests an alternative forcing to the NwAC, here interpreted as the combined action of the Norwegian Coastal Current and bathymetric constraints imposed by the ice sheet retreat pattern. Several ploughmarks with unique features, such as tidal ridges or highly sinuous …
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Upwelling dynamics off Monterey Bay : heat flux and temperature variability, and their sensitivities
… 150m. Effects of differing atmospheric forcing contributions (wind stress, surface heating/cooling, and evaporation-precipitation) on these full fields and on the volume and term-by-term balances are analyzed. Tidal effects are quantified utilizing pairs of simulations in which tides are …
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Biological-physical interactions on Georges Bank : plankton transport and population dynamics of the ocean quahog, Arctica islandica
… bank water during winter because of strong wind forcing were hypothesized to be a significant factor limiting recruitment of Georges Bank cormnunities. This hypothesis was examined using biological-physical models of bank circulation with wind, tidal, and density driven circulation resembling …
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Advancing the theory and applications of Lagrangian Coherent Structures methods for oceanic surface flows
… Vineyard, Massachusetts, two case studies with tidally-driven channel flows. The FTLE and spectral clustering analyses were particularly helpful in describing key transient flow features and how they were impacted by tidal forcing and vertical velocities. This could not have been identified from …
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Role of Planetary Wave-Tide-Gravity Wave Interactions In Whole Atmosphere Coupling
… and zonal circulation, parameterized GW forcing, and resolved planetary and tidal forcing represent intra-seasonal changes during NH major SSWs, which result in the different behaviors of IHCs. Warmings around the summer polar mesopause are more pronounced in the later boreal winter …
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