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 32 for “"ocean physics"”.
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The dynamics of geometrically compliant mooring systems
Thesis (Ph. D.)--Joint Program in Applied Ocean Physics and Engineering (Massachusetts Institute of Technology, Dept. of Ocean Engineering; and the Woods Hole Oceanographic Institution), 2000.
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Sediment deposition in the lower Hudson River estuary
… Engineering)--Joint Program in Applied Ocean Physics and Engineering (Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering; and the Woods Hole Oceanographic Institution), 1999.
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Physically constrained maximum likelihood method for snapshot deficient adaptive array processing
… Engineering)--Joint Program in Applied Ocean Physics and Engineering (Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; and the Woods Hole Oceanographic Institution), 2003.
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Design of interactive maps for ocean dynamics data
… modeling and forecasting systems for ocean dynamics necessitate robust and efficient data delivery and visualization techniques. The multi-disciplinary simulation, estimation, and assimilation systems group at MIT (MSEAS) focuses on capturing and predicting diverse ocean dynamics, …
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Stochastic Dynamically Orthogonal Modeling and Bayesian Learning for Underwater Acoustic Propagation
… However, the incomplete knowledge of the ocean environment and acoustic parameters makes reliable acoustic predictions challenging. This is due to the sparse and heterogeneous data, as well as to the complex ocean physics and acoustics dynamics, multiscale interactions, and large …
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Understanding the ocean carbon and sulfur cycles in the context of a variable ocean : a study of anthropogenic carbon storage and dimethylsulfide production in the Atlantic Ocean
… climate through the emission of carbon dioxide. Ocean carbon and sulfur cycles have the potential to impact global climate directly and through feedback loops. Numerical modeling, field and laboratory studies are used to improve our mechanistic understanding of the impact of natural variability …
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Understanding the ocean carbon and sulfur cycles in the context of a variable ocean : a study of anthropogenic carbon storage and dimethylsulfide production in the Atlantic Ocean
… climate through the emission of carbon dioxide. Ocean carbon and sulfur cycles have the potential to impact global climate directly and through feedback loops. Numerical modeling, field and laboratory studies are used to improve our mechanistic understanding of the impact of natural variability …
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Towards Coupled Nonhydrostatic-Hydrostatic Hybridizable Discontinuous Galerkin Method
Numerical modelling of ocean physics is essential for multiple applications such as scientific inquiry and climate change but also renewable energy, transport, autonomy, fisheries, water, harvesting, tourism, communication, conservation, planning, and security. However, the wide range of scales and …
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Inference and robotic path planning over high dimensional categorical observations
… in-situ marine sensing technology have enabled oceanographers to collect vast amounts of spatiotemporally-distributed, sparse, highdimensional categorical data. Statistical models, particularly in streaming and computationally constrained settings, have lagged behind data collection. Recent …
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Physical influences on phytoplankton ecology : models and observations
The physical environment in the oceans dictates not only how phytoplankton cells are dispersed and their populations intermingled, but also mediates the supply of nutrients to the surface mixed layer. In this thesis I explore both of these aspects of the interaction between phytoplankton ecology …
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The origins of the East Greenland Coastal Current on the Northeast Greenland Shelf: a comparison of two reanalysis products
… in the region. In this thesis, I use two ocean reanalyses, the Regional Arctic Ocean/sea-ice Reanalysis (RARE) and Global Ocean Physics Reanalysis (GLORYS) to explore the structure and dynamics of the ocean circulation on the NEGS. To validate the use of these products in the region, I …
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Physical influences on phytoplankton ecology : models and observations
The physical environment in the oceans dictates not only how phytoplankton cells are dispersed and their populations intermingled, but also mediates the supply of nutrients to the surface mixed layer. In this thesis I explore both of these aspects of the interaction between phytoplankton ecology …
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The Origins of the East Greenland Coastal Current on the Northeast Greenland Shelf: a Comparison of Two Reanalysis Products
… in the region. In this thesis, I use two ocean reanalyses, the Regional Arctic Ocean/sea-ice Reanalysis (RARE) and Global Ocean Physics Reanalysis (GLORYS) to explore the structure and dynamics of the ocean circulation on the NEGS. To validate the use of these products in the region, I …
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Inference and Robotic Path Planning over High Dimensional Categorical Observations
… in-situ marine sensing technology have enabled oceanographers to collect vast amounts of spatiotemporally-distributed, sparse, high dimensional categorical data. Statistical models, particularly in streaming and computationally constrained settings, have lagged behind data collection. Recent …
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Broadband acoustic characterization of the deep scattering layer
… layers are found throughout the global ocean at depths between 200 and 1000 meters, referred to as the deep scattering layers (DSLs). DSLs are biological in nature, primarily formed by organisms such as zooplankton and mesopelagic fish, many of which undertake diel vertical migration …
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Submesoscale Biophysical Interactions on the Gulf Stream: Eddies, Fronts, and New Observational Methods
<p>Our oceans are a key part of the Earth system, an underappreciated bastion of our carbon cycle, and the home of incredible biodiversity, yet marine ecosystems are extremely challenging to model with a range of feedbacks that are not understood. Particularly poorly understood are linkages between …
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Efficient representation of the hydrographic structure of the north Atlantic Ocean and aspects of the circulation from objective methods
… mathematical techniques for determining the ocean circulation from classical hydrographic data. Two aspects of this theme are analyzed. The first is finding an efficient representation of hydrographic structure so as to make it most useful and informative. The second is application of inverse …
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Data-driven Ocean Modelling
… and assessing data-driven models of the ocean. Specifically we develop data-driven emulators of an idealised configuration of a physics-based ocean simulator, MITgcm. While work focuses on idealised cases, these simplified configurations nevertheless capture important aspects of the …
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Multi-Scale Localized Perturbation Method for Geophysical Fluid Flows
An alternative formulation of the governing equations of a dynamical system, called the multi-scale localized perturbation method, is introduced and derived for the purpose of solving complex geophysical flow problems. Simulation variables are decomposed into background and perturbation components, …
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Seafloor ripples created by waves from hurricane Ivan on the west Florida shelf
Recent studies have shown that the presence of sand ripples on the seabed improves sonar detection of buried mines at sub-critical angles. Sidescan sonar data of ripples off on the west Florida shelf were collected as part of ONR's Ripples Departmental Research Initiative (DRI) September 26-29th …
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