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Title: Transport of warm, high-salinity water to fringing reefs in the Exuma Cays, Bahamas: implications for coral bleaching.
Creator: Pitts, Patrick A., Harbor Branch Oceanographic Institute
Date Issued: 1999
PURL: http://purl.flvc.org/fau/fd/FA00007051
Subject Headings: Exuma (Bahamas), Salinity, Coral bleaching, Water temperature, Reefs--Bahamas
Format: Document (PDF)

Title: Large vertical salinity gradients in the Ft. Pierce inlet associated with hurricane David.
Creator: Kierspe, George H.
Date Issued: 1981
PURL: http://purl.flvc.org/FCLA/DT/3183154
Subject Headings: Salinity, Hurricane David, 1979, Fort Pierce Inlet, Fla., Estuaries
Format: Document (PDF)

Title: Design and implementation of intelligent control methodologies for reverse osmosis plants.
Creator: Jafar, Mutaz M., Florida Atlantic University, Zilouchian, Ali, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: This dissertation presents the design, implementation and application of soft computing methodologies to Reverse Osmosis (RO) desalination technology. A novel intelligent control scheme based on the integration of Neural Network (NN) and Fuzzy Logic (FL) is presented to optimize plants' performance. In the first part of the research work, two optimal NN predictive models, based on backpropagation and Radial Basis Function Networks (RBFN), were developed for three types of RO feed intakes. The...
Show moreThis dissertation presents the design, implementation and application of soft computing methodologies to Reverse Osmosis (RO) desalination technology. A novel intelligent control scheme based on the integration of Neural Network (NN) and Fuzzy Logic (FL) is presented to optimize plants' performance. In the first part of the research work, two optimal NN predictive models, based on backpropagation and Radial Basis Function Networks (RBFN), were developed for three types of RO feed intakes. The predictive models utilized actual operating data for the three RO plants in order to predict system recovery, total dissolved solids and ion product concentration in brine stream A predictive model is proposed based on redistributed receptive fields of RBFN. The proposed algorithm utilizes integration of supervised learning of centers and unsupervised learning of output layer weights. Extensive simulations are presented to demonstrate the effectiveness of the proposed method for generalization on prediction of nonlinear input-output mappings. In the second part of the study, the design of FL control strategy for direct seawater RO system is carried out. The real-time controller design is based on integration of sensory information, predicted outputs, mathematical calculations, and expert knowledge of the process to yield a constant recovery, constant salt rejection and minimum scaling under variable operating conditions. To implement the designed methodology, a 250/800 Gallon per Day (GPD) prototype RO plant with direct Atlantic Ocean intake is constructed at FAU Gumbo Limbo research laboratory. Two types of membrane modules were used for this study: Spiral Wound (SW) and Hollow Fine Fiber (HFF). The prototype plant indeed demonstrated the effectiveness and optimum performance of the proposed design under variable operating conditions. The system achieved a constant recovery of 30% and salt passage of 1.026% while ion product concentration for six major salts were kept below their solubility limits at all time. The implementation of the proposed intelligent control methodology achieved a 4% increase in availability and a 50% reduction in manpower requirements, as well as reduction in overall chemical consumption of the plant. Therefore, it is expected that the cost of producing fresh water from seawater desalination will be decreased using the proposed intelligent control strategy.
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Date Issued: 2000
PURL: http://purl.flvc.org/fcla/dt/12650
Subject Headings: Saline water conversion--Reverse osmosis process, Intelligent control systems
Format: Document (PDF)

Title: Infectious hypodermal and hematopoietic necrosis (IHHN) virus transmission in Litopenaeus vannamei: Salinity influence in disease expression.
Creator: de Morales, M. M., Laramore, Susan E., Laramore, C. R., Morales, F., Scarpa, John
Date Issued: 2007
PURL: http://purl.flvc.org/FCLA/DT/3340516
Subject Headings: Litopenaeus vannamei, Infectious hematopoietic necrosis virus, Salinity, Communicable diseases--Transmission, Whiteleg shrimp
Format: Document (PDF)

Title: The analysis of cadmium, chromium, copper, iron, lead, and manganese in estuarine waters.
Creator: Hucks, Michael W., Peterson, Gary N., Montgomery, John R.
PURL: http://purl.flvc.org/fcla/dt/3358618
Subject Headings: Estuaries, Indian River (Fla. : Lagoon), Saline waters--Analysis, Heavy metals--Analysis
Format: Document (PDF)

Title: The effect of salinity on larval survival and development in thesea urchin Echinometra lucunter.
Creator: Metaxas, Anna, Harbor Branch Oceanographic Institute
Date Issued: 1998
PURL: http://purl.flvc.org/fau/fd/FA00007270
Subject Headings: Echinometra lucunter, Sea urchins--Development, Sea urchins--Larvae, Salinity
Format: Document (PDF)

Title: Toxic Cyanobacteria (blue-green algae) associated with groundwater conduits in the Bahamas.
Creator: Littler, Mark M., Littler, Diane S., Lapointe, Brian E., Barile, Peter J.
Date Issued: 2006
PURL: http://purl.flvc.org/FCLA/DT/2875929
Subject Headings: Cynanobacteria, Marine algae --Antilles, Lesser, Saline waters, Salts --Toxicity testing, Groundwater --Environmental aspects
Format: Document (PDF)

Title: The decline of coral reefs in the Florida Keys, USA: the nexus of hypersalinity, eutrophication, political science and marine science.
Creator: Lapointe, Brian E., Matzie, William R.
Date Issued: 1998
PURL: http://purl.flvc.org/FCLA/DT/3351217
Subject Headings: Coral reefs and islands--Florida, Coral declines, Salinity, Eutrophication, Political science, Marine science
Format: Document (PDF)

Title: Behaviour of echinoid larvae around sharp haloclines: effects of the salinity gradient and dietary conditioning.
Creator: Metaxas, Anna, Young, Craig M., Harbor Branch Oceanographic Institute
PURL: http://purl.flvc.org/FCLA/DT/3318899
Subject Headings: Echinoida, Sea urchins--Larvae, Larvae--Behavior, Larvae--Food, Salinity
Format: Document (PDF)

Title: Tidal and long-period exchanges between upper Laguna Madre and Corpus Christi Bay, Texas.
Creator: Smith, Ned P.
Date Issued: 1978
PURL: http://purl.flvc.org/fau/fd/FA00007133
Subject Headings: Laguna Madre (Tex.), Corpus Christi Bay (Tex.), Tidal currents, Water levels--Measurement, Salinity
Format: Document (PDF)

Title: Transport through Tavernier Creek: a primary flushing pathway for Northeast Florida Bay.
Creator: Smith, Ned P.
Date Issued: 2005
PURL: http://purl.flvc.org/FCLA/DT/2796048
Subject Headings: Florida Bay (Fla.), Tavernier (Fla.) --Maps, Tides, Tidal currents, Salinity --Florida
Format: Document (PDF)

Title: On long-term net flow over Great Bahama Bank.
Creator: Smith, Ned P.
Date Issued: 1995
PURL: http://purl.flvc.org/FCLA/DT/3321410
Subject Headings: Water currents--Measurement, Great Bahama Bank (Bahamas), Wind-pressure--Measurement, Salinity
Format: Document (PDF)

Title: Observations of steady and seasonal salt, heat, and mass transport through a tidal channel.
Creator: Smith, Ned P.
Date Issued: 1995
PURL: http://purl.flvc.org/FCLA/DT/3340503
Subject Headings: Tidal currents, Water temperature, Salinity, Time-series analysis, Exuma (Bahamas)
Format: Document (PDF)

Title: Barometric distillation and the problem of non-condensable gases.
Creator: Martinson, Eiki., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Barometric distillation is an alternative method of producing fresh water by desalination. This proposed process evaporates saline water at low pressure and consequently low temperature; low pressure conditions are achieved by use of barometric columns and condensation is by direct contact with a supply of fresh water that will be augmented by the distillate. Low-temperature sources of heat, such as the cooling water rejected by electrical power generating facilities, can supply this system...
Show moreBarometric distillation is an alternative method of producing fresh water by desalination. This proposed process evaporates saline water at low pressure and consequently low temperature; low pressure conditions are achieved by use of barometric columns and condensation is by direct contact with a supply of fresh water that will be augmented by the distillate. Low-temperature sources of heat, such as the cooling water rejected by electrical power generating facilities, can supply this system with the latent heat of evaporation. Experiments are presented that show successful distillation with a temperature difference between evaporator and condenser smaller than 10ê C. Accumulation of dissolved gases coming out of solution, a classic problem in lowpressure distillation, is indirectly measured using a gas-tension sensor. The results of these experiments are used in an analysis of the specific energy required by a production process capable of producing 15 liters per hour. With a 20ê C difference, and neglecting latent heat, this analysis yields a specific energy of 1.85 kilowatt-hour per cubic meter, consumed by water pumping and by removal of non-condensable gases.
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Date Issued: 2010
PURL: http://purl.flvc.org/FAU/2978949
Subject Headings: Chemistry, Physical and theoretical, Fluid mechanics, Saline water conversion, Renewable energy sources, Groundwater, Purification
Format: Document (PDF)

Title: CHANGES IN PHYSICAL PROPERTIES OF THE PEAT SOIL MATRIX ACROSS A SALINITY GRADIENT IN THE EVERGLADES: IMPLICATIONS FOR ACCELERATING PEAT COLLAPSE DURING SEA LEVEL RISE.
Creator: Florey, Maxwell, Comas, Xavier, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
Abstract/Description: Peatlands are areas with an accumulated layer of peat soil that are considered global stores of carbon, acting as a net sink of carbon dioxide and a net source of methane. Recent studies in coastal peatlands have shown how that a rise in sea level may contribute to the degradation of peat soils due to the inland progression of the saltwater interface, which may result in physical changes within the peat matrix that may eventually result in peat collapse. For example, earlier studies in boreal...
Show morePeatlands are areas with an accumulated layer of peat soil that are considered global stores of carbon, acting as a net sink of carbon dioxide and a net source of methane. Recent studies in coastal peatlands have shown how that a rise in sea level may contribute to the degradation of peat soils due to the inland progression of the saltwater interface, which may result in physical changes within the peat matrix that may eventually result in peat collapse. For example, earlier studies in boreal peat soils described the effect of pore dilation as a result of increased salinity in peat soils, while recent studies in Everglades peat soils showed specific salinity thresholds that may represent a permanent loss of the structural integrity of the peat matrix that may represent early stages of peat collapse. While most of these previous efforts have focused on drivers, recent work has also explored conceptual models to better understand the mechanisms inducing peat collapse. However, few datasets exists that consistently compare differences in physical properties under different in‐situ salinity conditions. In this study differences in the physical properties of peat soils across a salinity gradient along the western edge of Big Cypress National Preserve are investigated to test how differences in salinity may induce physical changes in the soil matrix. The physical properties targeted for this study include porosity, hydraulic conductivity, and carbon content. Measurements are conducted at the laboratory scale using peat cores and monoliths collected at selected locations to investigate: 1) how overall soil physical properties change spatially over a salinity gradient at the km scale moving from permanently saline to freshwater conditions; and 2) how physical properties change spatially at specific sites as dependant on vegetation boundaries and proximity to collapsed soils. This study has implications for better understanding the potential relation between physical changes of the soil matrix and the phenomena of peat collapse in the Everglades as saltwater intrusion progresses inward and alters freshwater ecosystems. Furthermore, a better mechanistic understanding of the peat collapse phenomenon can potentially help mitigate its occurrence.
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Date Issued: 2021
PURL: http://purl.flvc.org/fau/fd/FA00013809
Subject Headings: Peat soils, Salinity, Sea level, Big Cypress National Preserve (Fla.), Everglades (Fla.)
Format: Document (PDF)

Title: Salinity simulation in Florida Bay with the Regional Oceanic Modeling System (ROMS).
Creator: Siddke, Abu Bakar, Chérubin, Laurent, Florida Atlantic University, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: Understanding and resolving the water quality problems that Florida Bay has endured requires an understanding of its salinity drivers. Because salinity is the prime factor that drives estuarine ecosystem, Florida Bay’s ecosystem health depends on the correct salinity balance of the Bay. In this thesis, the Regional Oceanic Modeling System - a hydrodynamic prognostic model -was implemented on Florida Bay and it was tailored for shallow waters. Results show that the model captures most of the...
Show moreUnderstanding and resolving the water quality problems that Florida Bay has endured requires an understanding of its salinity drivers. Because salinity is the prime factor that drives estuarine ecosystem, Florida Bay’s ecosystem health depends on the correct salinity balance of the Bay. In this thesis, the Regional Oceanic Modeling System - a hydrodynamic prognostic model -was implemented on Florida Bay and it was tailored for shallow waters. Results show that the model captures most of the salinity spatial and temporal variability of Florida Bay. Furthermore, it establishes the role of the major drivers like evaporation, precipitation, and runoff on Florida Bay’s salinity. The model resolves region specific salinity drivers in all four areas of Florida Bay characterized by their own salinity regimes. The model was also able to reveal the impact of surface runoff on salinity in the later part of the year when evaporation increases. A new technique was developed to estimate the discharge and salinity of unmonitored small creeks north of Florida Bay. Those data were estimated from the relationship between net freshwater flux, runoff, and salinity. Model results revealed the importance of accounting for these small creeks to accurately simulate Florida Bay’s salinity.
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Date Issued: 2018
PURL: http://purl.flvc.org/fau/fd/FA00005996
Subject Headings: Florida Bay (Fla.), Salinity, Hydrodynamics--Mathematical models, Hydrodynamics--Computer simulation, Estuaries--Hydrodynamics
Format: Document (PDF)

Title: Computer simulation for the optimization of reverse osmosis seawater desalination pretreatment.
Creator: Corlay, Brieuc., Florida Atlantic University, Haky, Jerome E.
Abstract/Description: A computer program was developed to simulate and optimize the chemical pretreatment of seawater prior to desalination by reverse osmosis. The model was created using LabViewRTM programming language. The automation of the process was achieved using a PID (proportional, integrative, derivative) controller. The effects of a variety of operating conditions were modeled to optimize the chemical pretreatment. We focused on three parameters: hardness removal, iron removal and control of biogrowth....
Show moreA computer program was developed to simulate and optimize the chemical pretreatment of seawater prior to desalination by reverse osmosis. The model was created using LabViewRTM programming language. The automation of the process was achieved using a PID (proportional, integrative, derivative) controller. The effects of a variety of operating conditions were modeled to optimize the chemical pretreatment. We focused on three parameters: hardness removal, iron removal and control of biogrowth. The validity of the model was verified with laboratory scale experiments. In the range of the model, the predicted values differ by a maximum of 11% from experimental results.
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Date Issued: 2003
PURL: http://purl.flvc.org/fcla/dt/13026
Subject Headings: Saline water conversion--Reverse osmosis process, Reverse osmosis--Computer simulation
Format: Document (PDF)

Title: Modeling of reverse osmosis plants using system identification and neural networks.
Creator: Saengrung, Anucha, Florida Atlantic University, Zilouchian, Ali, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Modeling of two reverse osmosis plants at FAU Gumbo Limbo facility and at the city of Boca Raton are investigated. System identification as well as artificial neural networks are utilized to carried out the tasks. The data for a six months operational period of both plants are utilized. The prediction error method and subspace method are utilized to estimate state-space model while the auto regression with extra input (ARX) model is estimated by using the least square method and the...
Show moreModeling of two reverse osmosis plants at FAU Gumbo Limbo facility and at the city of Boca Raton are investigated. System identification as well as artificial neural networks are utilized to carried out the tasks. The data for a six months operational period of both plants are utilized. The prediction error method and subspace method are utilized to estimate state-space model while the auto regression with extra input (ARX) model is estimated by using the least square method and the approximately optimal four-stage instrumental variable method. The training algorithms for artificial neural networks are based on backpropagation and radial basis network function (RBNF). The implementation of each methodology is performed step by step and finally, the results from both methodologies are analyzed and discussed. The results of the proposed study indicate that both system identification and neural networks algorithms can predict the outputs of both RO plants with the acceptable accuracy. Among all methodologies utilized in the thesis, the least square method for the auto regression with the extra input (ARX) model, can provide the best prediction for both RO plants.
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Date Issued: 2002
PURL: http://purl.flvc.org/fcla/dt/12963
Subject Headings: Saline water conversion--Reverse osmosis process, System identification, Neural networks (Computer science)
Format: Document (PDF)

Title: On the hydrography of shelf waters off the central Texas gulf coast.
Creator: Smith, Ned P.
Date Issued: 1980
PURL: http://purl.flvc.org/FCLA/DT/3321406
Subject Headings: Hydrography--Gulf Coast (U.S.), Continental shelf--Gulf Coast (U.S.), Salinity, Water temperature
Format: Document (PDF)

Title: The combined effects of low salinity and Dermo on oysters from the St. Lucie Estuary.
Creator: Baird, Krystal D., Florida Atlantic University, Roesijadi, Guritno
Abstract/Description: The viability of the eastern oyster, Crassostrea virginica, is designated as an ecological performance measure for the management of freshwater inflows to the St. Lucie Estuary, Florida. Thus, oysters derived from the St. Lucie Estuary were tested for their physiological response to stress, measured as altered condition index and RNA/DNA ratios, resulting from changes in salinity and infection by the protozoan parasite Perkinsus marinus, the agent of Dermo, a common oyster disease. Pilot...
Show moreThe viability of the eastern oyster, Crassostrea virginica, is designated as an ecological performance measure for the management of freshwater inflows to the St. Lucie Estuary, Florida. Thus, oysters derived from the St. Lucie Estuary were tested for their physiological response to stress, measured as altered condition index and RNA/DNA ratios, resulting from changes in salinity and infection by the protozoan parasite Perkinsus marinus, the agent of Dermo, a common oyster disease. Pilot studies consisted of the development of a real-time PCR-based assay for P. marinus infection, procedures to infect oysters with the pathogen by injection method and procedures for the measurement of RNA/DNA ratios. The general experimental design was to assess the response of non-injected and injected C. virginica to low salinity challenges. Two scenarios for salinity stress were tested: one in which oysters were subjected to a single reduction in salinity and one in which an initial reduction in salinity was followed by a recovery phase and then subjected to a second challenge of reduced salinity. Condition index was more responsive to changes in salinity regimes than to P. marinus infection. Changes in the RNA/DNA ratio were responsive to the infection status, but not changes in salinity; the pattern of change in the RNA/DNA ratio generally followed changes in the measured levels of infection. The lack of mortalities showed that these oysters were able to tolerate short periods of reduced salinity.
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Date Issued: 2006
PURL: http://purl.flvc.org/fcla/dt/13335
Subject Headings: Freshwater ecology, Ecosystem management, Water quality management, American oyster--Florida, Saint Lucie River Estuary (Fla ), Salinity--Physiological effect
Format: Document (PDF)

HBOI Faculty Contributions (30)	+ -
FAU Theses and Dissertations (11)	+ -
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Salinity (30)	+ -
Saline water conversion--Reverse osmosis process (4)	+ -
Estuaries (3)	+ -
Florida Bay (Fla.) (3)	+ -
Saline waters (3)	+ -

Temperature (3)	+ -
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Aquaculture (2)	+ -
Exuma (Bahamas) (2)	+ -
Laguna Madre (Tex.) (2)	+ -
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