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Now showing items 41-48 of 48
Acoustic scattering from sand dollars (Dendraster Excentricus) : modeling as high aspect ratio oblate objects and comparison to experiment
(Massachusetts Institute of Technology, 2008)
Benthic shells can contribute greatly to the scattering variability of the ocean bottom, particularly at low grazing angles. Among the effects of shell aggregates are increased scattering strength and potential subcritical ...
Landmine detection with a standoff acoustic/laser technique
(Massachusetts Institute of Technology, 2008)
Landmines and mine-like traps are effective weapons that are difficult to detect and discriminate from a safe distance. The ability to detect landmines in their host environment at a distance and to discriminate them from ...
Error and uncertainty in estimates of Reynolds stress using ADCP in an energetic ocean state
(Massachusetts Institute of Technology, 2006)
(cont.) To that end, the space-time correlations of the error, turbulence, and wave processes are developed and then utilized to find the extent to which the environmental and internal processing parameters contribute to ...
Stochastic mapping for chemical plume source localization with application to autonomous hydrothermal vent discovery
(Massachusetts Institute of Technology, 2006)
This thesis presents a stochastic mapping framework for autonomous robotic chemical plume source localization in environments with multiple sources. Potential applications for robotic chemical plume source localization ...
Forward sound propagation around seamounts : application of acoustic models to the Kermit-Roosevelt and Elivs seamounts
(Massachusetts Institute of Technology, 2009)
The Basin Acoustic Seamount Scattering Experiment (BASSEX) of 2004 was conducted to measure forward-scattering around the Kermit-Roosevelt Seamount Complex in the Northeast Pacific. The BASSEX experiment was focused on the ...
CFD study of hydrodynamic signal perception by fish using the lateral line system
(Massachusetts Institute of Technology, 2009)
The lateral line system on fish has been found to aid in schooling behavior, courtship communication, active and passive hydrodynamic imaging, and prey detection. The most widely used artificial prey stimulus has been the ...
Field measurements of a swell band, shore normal, flux divergence reversal
(Massachusetts Institute of Technology, 2011)
Throughout this thesis we will discuss the theoretical background and empirical observation of a swell band shore normal flux divergence reversal. Specifically, we will demonstrate the existence and persistence of the ...
Computational approaches for sub-meter ocean color remote sensing
(Massachusetts Institute of Technology, 2021)
The satellite ocean color remote sensing paradigm developed by government space agencies enables the assessment of ocean color products on global scales at kilometer resolutions. A similar paradigm has not yet been developed ...