Browsing MIT Theses by Subject "/Woods Hole Oceanographic Institution. Joint Program in Applied Ocean Science and Engineering."
Now showing items 1-20 of 25
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Analysis of 2-axis pencil beam sonar microbathymetric measurements of mine burial at the Martha's Vineyard Coastal Observatory
(Massachusetts Institute of Technology, 2005)The changing state of warfare has driven the US Navy's area of operations closer to shore into littoral coastal waters. Mine Warfare has been proven as an extremely effective means of battlespace control in these waters. ... -
Analysis of acoustic propagation in the region of the New England continental shelfbreak
(Massachusetts Institute of Technology, 1999)During July and August of 1996, a large acoustics/physical oceanography experiment was fielded in the Mid-Atlantic Bight, south of Nantucket Island, MA. Known as the Shelfbreak Front PRIMER Experiment, the study combined ... -
Application of statistical learning theory to plankton image analysis
(Massachusetts Institute of Technology, 2006)A fundamental problem in limnology and oceanography is the inability to quickly identify and map distributions of plankton. This thesis addresses the problem by applying statistical machine learning to video images collected ... -
Applied stochastic Eigen-analysis
(Massachusetts Institute of Technology, 2006)The first part of the dissertation investigates the application of the theory of large random matrices to high-dimensional inference problems when the samples are drawn from a multivariate normal distribution. A longstanding ... -
Biophysical coupling between turbulence, veliger behavior, and larval supply
(Massachusetts Institute of Technology, 2005)The goals of this thesis were to quantify the behavior of gastropod larvae (mud snails Ilyanassa obsoleta) in turbulence, and to investigate how that behavior affects larval supply in a turbulent coastal inlet. Gastropod ... -
Cooperative localization for autonomous underwater vehicles
(Massachusetts Institute of Technology, 2009)Self-localization of an underwater vehicle is particularly challenging due to the absence of Global Positioning System (GPS) reception or features at known positions that could otherwise have been used for position ... -
Design considerations for engineering Autonomous Underwater Vehicles
(Massachusetts Institute of Technology, 2007)Autonomous Underwater Vehicles (AUVs) have been established as a viable tool for Oceanographic Sciences. Being untethered and independent, AUVs fill the gap in Ocean Exploration left by the existing manned submersible and ... -
Estimating Gulf of Maine zooplankton distributions using multiple frequency acoustic, video and environmental data
(Massachusetts Institute of Technology, 2001)This thesis develops methods useful for estimating zooplankton distributions in the field by combining acoustic scattering models and an integrated set of field data. The accuracy of existing scattering models for fluid-like ... -
Evaluation of transport relative to the tidal mixing front on Southern Georges Bank
(Massachusetts Institute of Technology, 2001)As part of Phase III of the U.S. GLOBEC Georges Bank program, drogued drifters and dye tracer were released into the pycnocline on the southern flank of Georges Bank to measure advective and diffusive transport relative ... -
Horizontal linear array sensor localization and preliminary coherence measurements from the 2001 ASIAEX South China Sea experiment
(Massachusetts Institute of Technology, 2002)This thesis examines data collected in the South China Sea (SCS) component of the 2001 Asian Seas International Acoustic Experiment (ASIAEX), where a fixed Horizontal Linear Array (HLA) was deployed to study transverse ... -
Inversion for subbottom sound velocity profiles in the deep and shallow ocean
(Massachusetts Institute of Technology, 2005)This thesis investigates the application of acoustic measurements in the deep and shallow ocean to infer the sound velocity profile (svp) in the seabed. For the deep water ocean, an exact method based on the Gelfand-Levitan ... -
Investigations of scalar transfer coefficients in fog during the Coupled Boundary Layers and Air Sea Transfer experiment : a case study
(Massachusetts Institute of Technology, 2005)The uncertainty in the determination of the momentum and scalar fluxes remains one of the main obstacles to accurate numerical forecasts in low to moderate wind conditions. For example, latent heat fluxes computed from ... -
Large scale structure from motion for autonomous underwater vehicle surveys
(Massachusetts Institute of Technology, 2004)Our ability to image extended underwater scenes is severely limited by attenuation and backscatter. Generating a composite view from multiple overlapping images is usually the most practical and flexible way around this ... -
Large-area visually augmented navigation for autonomous underwater vehicles
(Massachusetts Institute of Technology, 2005)This thesis describes a vision-based, large-area, simultaneous localization and mapping (SLAM) algorithm that respects the low-overlap imagery constraints typical of autonomous underwater vehicles (AUVs) while exploiting ... -
Lossy compression and real-time geovisualization for ultra-low bandwidth telemetry from untethered underwater vehicles
(Massachusetts Institute of Technology, 2008)Oceanographic applications of robotics are as varied as the undersea environment itself. As underwater robotics moves toward the study of dynamic processes with multiple vehicles, there is an increasing need to distill ... -
Ocean circulation and dynamics on the west Antarctic Peninsula continental shelf
(Massachusetts Institute of Technology, 2007)Observations of current velocity, temperature, salinity and pressure from a 2-year moored array deployment and four hydrographic cruises conducted by the United States Southern Ocean GLOBEC program on the western Antarctic ... -
A parallel hypothesis method of autonomous underwater vehicle navigation
(Massachusetts Institute of Technology, 2009)This research presents a parallel hypothesis method for autonomous underwater vehicle navigation that enables a vehicle to expand the operating envelope of existing long baseline acoustic navigation systems by incorporating ... -
Performance analysis of subaperture processing using a large aperture planar towed array
(Massachusetts Institute of Technology, 2004)In recent years the focus of passive detection and localization of submarines has moved from the deep ocean into the littoral regions. the problem of passive detection in these regions is complicated by strong multipath ... -
Self consistent bathymetric mapping from robotic vehicles in the deep ocean
(Massachusetts Institute of Technology, 2005)Obtaining accurate and repeatable navigation for robotic vehicles in the deep ocean is difficult and consequently a limiting factor when constructing vehicle-based bathymetric maps. This thesis presents a methodology to ... -
Setup in the surfzone
(Massachusetts Institute of Technology, 2007)Surfzone wave height transformation and wave-breaking-driven increases in the mean sea level (setup) are examined on alongshore-uniform beaches with alongshore homogeneous and inhomogeneous wave forcing. While previously ...
