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 28 for “"Rough topography"”.
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Observations of mesoscale eddies over rough topography in the western North Atlantic,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1974.
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PRINCESS AND THE PEA: THE IMPACT OF ROUGH TOPOGRAPHY ON DYNAMICS OF LARGE-SCALE SURFACE CIRCULATION PATTERNS
… between these forces and unresolved bottom topography is poorly understood and not properly represented in coarse-resolution models. This study investigates how ocean floor roughness, at the kilometer scale, influences the double-gyre circulation by utilizing a two-layer quasi-geostrophic …
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A multi-dimensional spectral description of ocean variability with applications
… for the interaction of linear Rossby waves with rough topography; rough topography can explain both the observed phase speeds and vertical structure of variability. The improved description of low-frequency ocean variability presented here will serve as a useful tool for future oceanographic …
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A multi-dimensional spectral description of ocean variability with applications
… for the interaction of linear Rossby waves with rough topography; rough topography can explain both the observed phase speeds and vertical structure of variability. The improved description of low-frequency ocean variability presented here will serve as a useful tool for future oceanographic …
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Boundary layer dynamics and deep ocean mixing in Mid-Atlantic Ridge canyons
… observational studies, we know that areas of rough topography are important and the hundreds of Grand-Canyon sized canyons that line mid-ocean ridges have particularly energetic mixing. To better understand the mechanisms by which rough topography translates into energetic currents and mixing, …
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Boundary layer dynamics and deep ocean mixing in Mid-Atlantic Ridge canyons
… observational studies, we know that areas of rough topography are important and the hundreds of Grand-Canyon sized canyons that line mid-ocean ridges have particularly energetic mixing. To better understand the mechanisms by which rough topography translates into energetic currents and mixing, …
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Control of the abyssal ocean overturning circulation by mixing-driven bottom boundary layers
… interior and mixing-driven boundary layers over rough topography, such as the sloping flanks of mid-ocean ridges. BBL upwelling is well predicted by boundary layer theory, whereas the compensation by SML downwelling is weakened by the upward increase of the basin-wide stratification, which …
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Control of the abyssal ocean overturning circulation by mixing-driven bottom boundary layers
… interior and mixing-driven boundary layers over rough topography, such as the sloping flanks of mid-ocean ridges. BBL upwelling is well predicted by boundary layer theory, whereas the compensation by SML downwelling is weakened by the upward increase of the basin-wide stratification, which …
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Scattering of internal gravity waves
… drive vertical transport of heat and mass through the ocean by wave breaking and the mixing subsequently produced. Identifying regions where internal gravity waves contribute to ocean mixing and quantifying this mixing are therefore important for accurate climate and weather predictions. …
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A laboratory study of localized boundary mixing in a rotating stratified fluid
… that abyssal mixing is localized in regions of rough topography. How locally mixed fluid interacts with the ambient fluid is an open question. Laboratory experiments explore the interaction of mechanically induced boundary mixing and an interior body of linearly stratified rotating fluid. A …
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Deep-Sea Environment
… has been believed earlier, but instead it is of rough topography with numerous irregularities, deep depressions, many high seamounts, and elongate ridges and trenches, determined largely by tectonic movements and volcanic extrusions. The sea floor is the place of accumulation of solid detrital …
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Modeling and control of an autonomous underwater vehicle with combined foil/thruster actuators
… forward flight, well suited to survey work over rough topography. Capitalizing on this; however, requires an understanding of the vehicles dynamics. In this work, we present the development and analysis of an analytic model of the Sentry AUV. Our goals were to develop a model sufficiently …
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Radiation and dissipation of internal waves generated by geostrophic motions impinging on small-scale topography
… enhanced in the Southern Ocean in regions above rough topography. The enhancement extends 1 km above the topography suggesting that mixing is supported by breaking of gravity waves radiated from the ocean bottom. In other regions, gravity wave radiation by bottom topography has been primarily …
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Radiation and dissipation of internal waves generated by geostrophic motions impinging on small-scale topography
… enhanced in the Southern Ocean in regions above rough topography. The enhancement extends 1 km above the topography suggesting that mixing is supported by breaking of gravity waves radiated from the ocean bottom. In other regions, gravity wave radiation by bottom topography has been primarily …
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GEOMORPHOLOGICAL MAPPING OF THE K2 AREA, PAKISTAN USING GIS AND REMOTE SENSING
… most of the glaciers; Baltoro Glacier shows a rough topography with countless supraglacial and para-glacial lakes. Analysis of landform types helps to understand the dominance of individual geomorphological processes. Glacial, fluvial, and tectonic processes each play an important role in the …
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GEOMORPHOLOGICAL MAPPING OF THE K2 AREA, PAKISTAN USING GIS AND REMOTE SENSING
… most of the glaciers; Baltoro Glacier shows a rough topography with countless supraglacial and para-glacial lakes. Analysis of landform types helps to understand the dominance of individual geomorphological processes. Glacial, fluvial, and tectonic processes each play an important role in the …
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Abyssal mixing from bottom boundary effects in Mid-Atlantic Ridge flank canyons
… internal waves generated by tidal flows over rough topography. However, intriguing observations, particularly from the Brazil Basin Tracer Release Experiment, suggest that mixing in the flank canyons of the Mid-Atlantic Ridge generated when strong mean flows interact with the many sills and …
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Abyssal mixing from bottom boundary effects in Mid-Atlantic Ridge flank canyons
… internal waves generated by tidal flows over rough topography. However, intriguing observations, particularly from the Brazil Basin Tracer Release Experiment, suggest that mixing in the flank canyons of the Mid-Atlantic Ridge generated when strong mean flows interact with the many sills and …
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A laboratory study of localized boundary mixing in a rotating stratified fluid
… that abyssal mixing is localized in regions of rough topography. How locally mixed fluid interacts with the ambient fluid is an open question. Laboratory experiments explore the interaction of mechanically induced boundary mixing and an interior body of linearly stratified rotating fluid. …
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Attachment of bacteria to teflon and buna-n-rubber gasket materials
… electron microscopy was used to analyze the topography of both materials and x-ray microanalysis identified the elemental chemical composition of the polymers. Teflon was primarily a smooth surface with random irregular spots, while buna-N-rubber had a very rough topography with "caverns" and …
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