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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 ...
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. ...
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 ...
Physical control of the distributions of a key Arctic copepod in the Northeast Chukchi Sea
(Massachusetts Institute of Technology, 2015)
The copepod Calanus glacialis is one of the most important zooplankton taxa in the Arctic shelf seas where it serves as a key grazer, predator, and food source. Its summer distribution and abundance has direct effects on ...
Automated open circuit scuba diver detection with low cost passive sonar and machine learning
(Massachusetts Institute of Technology, 2019)
This thesis evaluates automated open-circuit scuba diver detection using low-cost passive sonar and machine learning. Previous automated passive sonar scuba diver detection systems required matching the frequency of diver ...
Robust acoustic signal detection and synchronization in a time varying ocean environment
(Massachusetts Institute of Technology, 2012)
Signal detection and synchronization in the time varying ocean environment is a difficult endeavor. The current common methods include using a linear frequency modulated chirped pulse or maximal length sequence as a detection ...
Real time bottom reverberation simulation in deep and shallow ocean environments
(Massachusetts Institute of Technology, 2015)
Due to the costs involved and time required to perform experiments at sea, it is important to provide accurate simulations of the ocean environment. Using the ray tracing code, BELLHOP, the Mission Oriented Operating Suite ...