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Coastal ocean variability off the coast of Taiwan in response to typhoon Morakot : river forcing, atmospheric forcing, and cold dome dynamics
(Massachusetts Institute of Technology, 2014)
The ocean is a complex, constantly changing, highly dynamical system. Prediction capabilities are constantly being improved in order to better understand and forecast ocean properties for applications in science, industry, ...
Interannual variability of the Pacific water boundary current in the Beaufort Sea
(Massachusetts Institute of Technology, 2013)
Between 2002 and 2011 a single mooring was maintained in the core of the Pacific Water boundary current in the Alaskan Beaufort Sea near 152° W. Using velocity and hydrographic data from six year-long deployments during ...
Vortex Induced Vibrations of cylinders : experiments in reducing drag force and amplitude of motion
(Massachusetts Institute of Technology, 2007)
Reducing the deleterious effect of Vortex Induced Vibrations (VIV) in marine risers is an important task for ocean engineers; and many competing factors exist in the design of VIV suppression devices. This thesis explores ...
Modifiable stability and maneuverability of high speed unmanned underwater vehicles (UUVs) through bioinspired control fins
(Massachusetts Institute of Technology, 2020)
Underwater Vehicles generally have control fins located only near their aft end, for making controllable changes in directions. This design allows for stability of control; however, the turns are typically large in comparison ...
Coordinated tracking and interception of an acoustic target using autonomous surface vehicles
(Massachusetts Institute of Technology, 2019)
In today's highly advanced society, more industries are beginning to turn to autonomous vehicles to reduce costs and improve safety. One industry in particular is the defense industry. By using unmanned and autonomous ...
Development and deployment of a novel deep-sea in situ bubble sampling instrument for understanding the fate of methane in the water column
(Massachusetts Institute of Technology, 2019)
Methane (CH₄) is a potent greenhouse gas that is often found in a solid, hydrate clathrate form in marine sediments along continental margins and will often escape from the seafloor and rise through the water column as ...
Multiple-vehicle resource-constrained navigation in the deep ocean
(Massachusetts Institute of Technology, 2011)
This thesis discusses sensor management methods for multiple-vehicle fleets of autonomous underwater vehicles, which will allow for more efficient and capable infrastructure in marine science, industry, and naval applications. ...
The feasibility of sodar wind profile measurements from an oceanographic buoy
(Massachusetts Institute of Technology, 2006)
This thesis explores the feasibility of making wind speed profile measurements from an oceanographic buoy using a Doppler sodar. In the fall of 2005, we deployed a Scintec SFAS sodar on an ASIS buoy. Roughly one week of ...
Target tracking onboard an autonomous underwater vehicle : determining optimal towed array heading in an anisotropic noise field
(Massachusetts Institute of Technology, 2007)
In order to overcome the challenges that an anisotropic noise field poses for underwater target tracking, we conduct an onboard estimation of the horizontal noise directionality in the real-time processing suite of an ...
Evaluation of vector sensors for adaptive equalization in underwater acoustic communication
(Massachusetts Institute of Technology, 2014)
Underwater acoustic communication is an extremely complex field that faces many challenges due to the time-varying nature of the ocean environment. Vector sensors are a proven technology that when utilizing their directional ...