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Full-Text Articles in Physical Sciences and Mathematics

Lighting A Path To Biofouling Prevention: Investigating The Effect Of Ultraviolet Light On Biofouling, Cierra Rose Braga Dec 2018

Lighting A Path To Biofouling Prevention: Investigating The Effect Of Ultraviolet Light On Biofouling, Cierra Rose Braga

Theses and Dissertations

Ultraviolet light (UV) is considered an environmentally friendly antifouling method because it disrupts biological growth without the release of harmful toxins. The application of UV for the marine shipping industry is a relatively new concept, and there still remains many unknowns before it can be fully implemented. This research investigated several aspects of applying UVC for the control of fouling. A novel method of using embedded UV LEDs within a silicone coating for fouling control proved to be very effective at preventing fouling. The research also investigated the effect of using an external UVC light treatment to control fouling on …


Wind-Driven Setup, Roughness, And Drag Over A Depth- And Fetch-Limited Coastal Estuary, Jeffrey Allen Colvin Dec 2018

Wind-Driven Setup, Roughness, And Drag Over A Depth- And Fetch-Limited Coastal Estuary, Jeffrey Allen Colvin

Theses and Dissertations

The understanding of the momentum exchange across the air-sea interface is critical to accurately model and forecast wind speed, wave properties, setup, and circulation. This is particularly true for a restricted estuary, such as the Indian River Lagoon (IRL), where wind is the driving force behind water movement due to the limited number of direct ocean connections. Current atmospheric and hydrodynamic models use formulations of the drag coefficient and/or roughness length based on open ocean studies in which wave properties are not considered. This dissertation develops two parameterizations – one for wind setup and one for the drag coefficient – …


Keeping Up With Sea-Level Rise: Carbonate Production Rates In Palau And Yap, Western Pacific Ocean, Robert Van Woesik, Christopher William Cacciapaglia May 2018

Keeping Up With Sea-Level Rise: Carbonate Production Rates In Palau And Yap, Western Pacific Ocean, Robert Van Woesik, Christopher William Cacciapaglia

Ocean Engineering and Marine Sciences Faculty Publications

Coral reefs protect islands from tropical storm waves and provide goods and services for millions of islanders worldwide. Yet it is unknown how coral reefs in general, and carbonate production in particular, will respond to sea-level rise and thermal stress associated with climate change. This study compared the reef-building capacity of different shallow-water habitats at twenty-four sites on each of two islands, Palau and Yap, in the western Pacific Ocean. We were particularly interested in estimating the inverse problem of calculating the value of live coral cover at which net carbonate production becomes negative, and whether that value varied across …


Morphologic Evolution Of A Nearshore Berm: One Year Monitoring At Ft. Myers Beach, Florida, Kristopher Jason Enfinger May 2018

Morphologic Evolution Of A Nearshore Berm: One Year Monitoring At Ft. Myers Beach, Florida, Kristopher Jason Enfinger

Theses and Dissertations

Nourishment in the form of a nearhsore berm has become an important alternative method to protecting shorelines and introducing sediment back into the littoral system. In 2009, a nearshore berm was constructed at Ft. Myers Beach, Florida by the U.S. Army Corps of Engineers through maintenance dredging of a nearby navigational channel at Matanzas Pass. Constructed in the form of a nearshore bar, the berm was one of the shallowest placements in a low-wave energy setting. The Coastal Research Lab at the University of South Florida (USF-CRL) conducted field monitoring for the first four years after the construction. This project …


Improving The Ability To Study Coastal Nutrient Dynamics Through The Development Of High-Resolution Water Samplers, Kyle Neumann Jan 2018

Improving The Ability To Study Coastal Nutrient Dynamics Through The Development Of High-Resolution Water Samplers, Kyle Neumann

Link Foundation Ocean Engineering and Instrumentation Fellowship Reports

Globally, marine ecosystems are experiencing fundamental shifts in their structure and function. Due to the high level of interconnectedness between aquatic organisms and their environment, they are highly sensitive to changes in water chemistry. For example, coral reefs thrive in water that generally contains very low concentrations of macronutrients such as nitrogen and phosphorus.1 An increase in these compounds as a result of human activities on land can have drastic impacts on coral health.2 In order to fully understand the cycling, fates and impacts of chemical compounds in the marine environment, it is critical to collect concentration data on the …