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Title: Sieving pecision and reproducibility: Sonic Sifter versus Ro-Tap.
Creator: Wolcott, R. Timothy
Date Issued: 1976-07-23
PURL: http://purl.flvc.org/fcla/dt/3359099
Subject Headings: Sediment, Indian River (Fla. : Lagoon), Particle size determination, Sedimentation analysis
Format: Document (PDF)

Title: A volume scattering model for sediment classification through acoustic means.
Creator: Jenkins, Michael Gerard., Florida Atlantic University, LeBlanc, Lester R.
Abstract/Description: A simple model is developed to evaluate the acoustic scattering environment of sediments based on the envelope function of digital sub-bottom sonar data. Scattering pressure and intensity histograms are produced from model results. These histograms are compared to the theoretical distributions expected for scattering event pressure and intensity. Sediment composition is inferred from the determined acoustic scattering environment. The model has been applied to X-Star digital sub-bottom data...
Show moreA simple model is developed to evaluate the acoustic scattering environment of sediments based on the envelope function of digital sub-bottom sonar data. Scattering pressure and intensity histograms are produced from model results. These histograms are compared to the theoretical distributions expected for scattering event pressure and intensity. Sediment composition is inferred from the determined acoustic scattering environment. The model has been applied to X-Star digital sub-bottom data taken in the vicinity of St. John's Harbor, New Brunswick. Model results are compared to ground truth (Borehole logs) taken within the survey area. This comparison indicates general trends within the sediment scattering environment which may be linked to sediment composition. Distinct differences in model results were noted over areas of differing sediment types.
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Date Issued: 1993
PURL: http://purl.flvc.org/fcla/dt/14945
Subject Headings: Sedimentation analysis, Underwater acoustics, Sound--Reverberation
Format: Document (PDF)

Title: Chlorophyll distribution in continental shelf sediments off West Palm Beach, Florida and west end, Bahamas.
Creator: Heffernan, John J., Gibson, R. A., Harbor Branch Oceanographic Institute
Date Issued: 1983
PURL: http://purl.flvc.org/FCLA/DT/3173005
Subject Headings: Marine sediments, Continental shelf, Chlorophyll, Pigments Analysis, Oceanographic submersibles
Format: Document (PDF)

Title: Light scattering and extinction in a highly turbid coastal inlet.
Creator: Thompson, M. John, Gilliland, Lewis E., Rosenfeld, Leslie K., Harbor Branch Oceanographic Institute
Date Issued: 1979
PURL: http://purl.flvc.org/FCLA/DT/3174007
Subject Headings: Inlets, Turbidity, Light --Scattering, Suspended sediments, Regression analysis
Format: Document (PDF)

Title: Relationships between seagrass bed characteristics and juvenile queen conch (Strombus gigas Linne) abundance in the Bahamas.
Creator: Stoner, Allan W., Lin, Junda, Hanisak, M. Dennis
Date Issued: 1995
PURL: http://purl.flvc.org/FCLA/DT/3174041
Subject Headings: Seagrasses, Queen conch, Algae, Multivariate analysis, Sediment, Suspended
Format: Document (PDF)

Title: The laboratory measurement of soluble phosphorus diffusion coefficients in kaolinite and bentonite clay sediments.
Creator: Donovan, William Cullen., Florida Atlantic University, Scarlatos, Panagiotis (Pete) D.
Abstract/Description: The specific effects of sediment resuspension on the rate and amount of phosphorus diffusion by commercially available kaolinite and bentonite soils were examined in a laboratory setting by amending the soils with phosphorus fertilizer (46% P2O5), reacting them in a plexiglass container (by removing a partition) and allowing the soils to mix with the overlying water column as they spread along the container bottom. The concentration of total phosphorus was measured at 1, 3, 6, 12, 24 and 36...
Show moreThe specific effects of sediment resuspension on the rate and amount of phosphorus diffusion by commercially available kaolinite and bentonite soils were examined in a laboratory setting by amending the soils with phosphorus fertilizer (46% P2O5), reacting them in a plexiglass container (by removing a partition) and allowing the soils to mix with the overlying water column as they spread along the container bottom. The concentration of total phosphorus was measured at 1, 3, 6, 12, 24 and 36 hours after reaction occurred. A computer program was written to calculate the diffusion coefficients (D) for the different soil and fertilizer treatments. Correcting the D values for adsorption resulted in effective diffusion coefficients (De) values, averaged across all retardation factors, of 0.010; 0.0017 and 0.0124 cm^2/day for the 13,944; 9,295 and 4,648 mu g/1 phosphorus fertilizer kaolinite treatments and 0.0002; 0.0006 and 0.0013 cm^2/day for the 13,654; 9,103 and 4,552 mu g/1 phosphorus fertilizer bentonite treatments. The diffusion coefficients for the kaolinite soil treatments were consistently greater than those for the bentonite treatments.
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Date Issued: 1993
PURL: http://purl.flvc.org/fcla/dt/14928
Subject Headings: Kaolinite, Bentonite, Soils--Phosphorus content, Sedimentation analysis
Format: Document (PDF)

Title: EVALUATION OF LOCAL OFFSHORE SEDIMENTS FOR COASTAL RESTORATION PROJECTS IN PALM BEACH COUNTY, FL, USA.
Creator: Palaparthi, Jyothirmayi, Briggs, Tiffany Roberts, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Open-coast beach-dune environments are vulnerable to erosion, such as from storms or interruption of littoral drift. Although protected from event-driven wave energy, backbarrier shorelines are also susceptible to erosion, due to tidal currents and boat wakes. A common response to mitigate erosion is to place sediment and restore the environment. For placement on beaches, a significant effort has been made to identify offshore resources available; however, offshore resources have seldom been...
Show moreOpen-coast beach-dune environments are vulnerable to erosion, such as from storms or interruption of littoral drift. Although protected from event-driven wave energy, backbarrier shorelines are also susceptible to erosion, due to tidal currents and boat wakes. A common response to mitigate erosion is to place sediment and restore the environment. For placement on beaches, a significant effort has been made to identify offshore resources available; however, offshore resources have seldom been considered for dune or backbarrier shoreline restoration. This study evaluates the geotechnical sediment properties of offshore sediments in proven borrow areas for beach nourishment and reclassifies them for placement in dunes and along the backbarrier in Palm Beach County, Florida. Two different methods calculate volume of offshore resources available for dune or backbarrier projects, including numerical calculations and interpolation of volume through SURFER. Because existing proven borrow areas are delineated for beach nourishment, less volume of sediment available in these areas for other coastal environments. The results of this study suggest that identifying offshore sediment sources for lower-energy environments would not adversely impact sediment needed for beach nourishment. As coastal environments are increasingly threatened by climate change and sea level rise, sediment resources become scarcer, the need to efficiently and effectively use sediments will be of utmost importance for scientists, engineers, and managers in their efforts to protect coastal habitat and communities.
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Date Issued: 2019
PURL: http://purl.flvc.org/fau/fd/FA00013337
Subject Headings: Sedimentation and deposition, Coastal erosion, Palm Beach County (Fla ), Sediments (Geology)--Analysis, Dunes, Coastal restoration
Format: Document (PDF)

Title: The normal incidence reflection coefficient of a sandy seabed as a function of frequency.
Creator: Arizzi, Ernest Allen., Florida Atlantic University, Schock, Steven G.
Abstract/Description: A thesis investigates the measured and theoretical pressure reflection coefficients of the seabed at normal incidence. The theoretical reflection coefficient is calculated using a physics-based model developed by Maurice Biot. The model describes sound propagation in saturated porous media and interrelationships between the acoustic properties of the media and the physical properties of the pore fluid and the porous solid. Stoll modified the Biot model for the case of ocean sediments and...
Show moreA thesis investigates the measured and theoretical pressure reflection coefficients of the seabed at normal incidence. The theoretical reflection coefficient is calculated using a physics-based model developed by Maurice Biot. The model describes sound propagation in saturated porous media and interrelationships between the acoustic properties of the media and the physical properties of the pore fluid and the porous solid. Stoll modified the Biot model for the case of ocean sediments and developed an expression for calculating the reflection coefficient as a function of frequency. This thesis tests the model by comparing the reflection coefficient measured with chirp sonar to the reflection coefficient calculated using the Biot model. An experiment was conducted off Fort Walton Beach, Florida where chirp sonar transmitted FM pulses at normal incidence to a sandy seabed. Sediment properties measured during SAX-99 are used to calculate the theoretical reflection coefficient using the Biot-Stoll model. The agreement of the measured reflection coefficients with the theoretical calculations over the band of 1500 to 16000 Hz varies as much as 70%. The plotted results show a reduction of the reflection coefficient with frequency but the large deviations from the trend prevent any further conclusions.
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Date Issued: 2004
PURL: http://purl.flvc.org/fcla/dt/13191
Subject Headings: Marine sediments--Acoustic properties, Underwater acoustics--Measurement, Sedimentation analysis
Format: Document (PDF)

Title: Organic determinations by ignition: caution advised.
Creator: Mook, David H., Hoskin, Charles M., Harbor Branch Oceanographic Institute
Date Issued: 1982
PURL: http://purl.flvc.org/FCLA/DT/3353734
Subject Headings: Heating, Organic compounds--Analysis, Inorganic compounds--Analysis, Sediment, Clay
Format: Document (PDF)

Title: Isolation and characterization of chlorophyll and carotenoids in Florida Bay: Phytoplankton, microphytobenthos and sediments.
Creator: Loitz, Joseph William, Florida Atlantic University, Louda, J. William
Abstract/Description: An analysis of the waters, microphytobenthos, and carbonate marl sediments of Florida Bay was performed using ion-paired RP-HPLC-PDA for chemotaxonomic characterization of past and present photoautotrophic, communities. Application of regression formulae was determined to be applicable for the waters, microphytobenthos, and surficial sediments (0--5 cm) of Florida Bay using chemotaxonomic principles. Loss of chemotaxonomically important pigments with depth prevented similar application in...
Show moreAn analysis of the waters, microphytobenthos, and carbonate marl sediments of Florida Bay was performed using ion-paired RP-HPLC-PDA for chemotaxonomic characterization of past and present photoautotrophic, communities. Application of regression formulae was determined to be applicable for the waters, microphytobenthos, and surficial sediments (0--5 cm) of Florida Bay using chemotaxonomic principles. Loss of chemotaxonomically important pigments with depth prevented similar application in deeper strata (>5 cm), however, past oxic and anoxic trends could be determined. Sedimentary alteration of pigments are characterized by: rapid conversion of chlorophylls-alpha and bacteriochlorophylls-alpha to their respective pheophytins-alpha, creation of a 'carotenoid diol-cluster', equilibrium isomerization of beta-carotene (15-cis and trans), and rapid conversion of pyropheophorbide-alpha to cyclopheophorbide-alpha. An abundant presence of pyropheophorbide-alpha steryl/hopanoid esters and an unusual relationship between organic carbon and water content providing the sediments with polymeric characteristics were also found.
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Date Issued: 1999
PURL: http://purl.flvc.org/fcla/dt/15734
Subject Headings: Marine sediments--Florida--Florida Bay, Carotenoids--Analysis, Chlorophyll--Analysis
Format: Document (PDF)

Title: Multi-scale characterization of dissolution structures and porosity distribution in the upper part of the Biscayne aquifer using ground penetrating radar (GPR).
Creator: Mount, Gregory J., Comas, Xavier, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: The karst Biscayne aquifer is characterized by a heterogeneous spatial arrangement of porosity, making hydrogeological characterization difficult. In this dissertation, I investigate the use of ground penetrating radar (GPR), for understanding the spatial distribution of porosity variability in the Miami Limestone presented as a compilation of studies where scale of measurement is progressively increased to account for varying dimensions of dissolution features. In Chapter 2, GPR in zero...
Show moreThe karst Biscayne aquifer is characterized by a heterogeneous spatial arrangement of porosity, making hydrogeological characterization difficult. In this dissertation, I investigate the use of ground penetrating radar (GPR), for understanding the spatial distribution of porosity variability in the Miami Limestone presented as a compilation of studies where scale of measurement is progressively increased to account for varying dimensions of dissolution features. In Chapter 2, GPR in zero offset acquisition mode is used to investigate the 2-D distribution of porosity and dielectric permittivity in a block of Miami Limestone at the laboratory scale (< 1.0 m). Petrophysical models based on fully saturated and unsaturated. water conditions are used to estimate porosity and solid dielectric permittivity of the limestone. Results show a good correspondence between analytical and GPR-based porosity estimates and show variability between 22.0-66.0 %. In Chapter 3, GPR in common offset and common midpoint acquisition mode are used to estimate bulk porosity of the unsaturated Miami Limestone at the field scale (10.0-100.0 m). Estimates of porosity are based on the assumption that the directly measured water table reflector is flat and that any deviation is attributed to changes in velocity due to porosity variability. Results show sharp changes in porosity ranging between 33.2-60.9 % attributed to dissolution areas. In Chapter 4, GPR in common offset mode is used to characterize porosity variability in the saturated Biscayne aquifer at 100-1000 m field scales. The presence of numerous diffraction hyperbolae are used to estimate electromagnetic wave velocity and asses both horizontal and vertical changes in porosity after application of a petrophysical model. Results show porosity variability between 23.0-41.0 % and confirm the presence of isolated areas that could serve as enhanced infiltration or recharge. This research allows for the identification and delineation areas of macroporosity areas at 0.01 m lateral resolution and shows variability of porosity at different scales, reaching 37.0 % within 1.3 m, associated with areas of enhanced dissolution. Such improved resolution of porosity estimates can benefit water management efforts and transport modelling and help to better understand small scale relationships between ground water and surface water interactions.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004143
Subject Headings: Ground penetrating radar, Limestone -- Florida -- Miami Dade County -- Analysis, Physical geology, Sedimentary basins -- Florida -- Biscayne Aquifer, Sedimentation analysis
Format: Document (PDF)

Title: Case history of a typical dredge-fill project in the northern Florida Keys—effects on water clarity, sedimentation rates and biota.
Creator: Griffin, G. M., Harbor Branch Oceanographic Institute
Date Issued: 1974
PURL: http://purl.flvc.org/FCLA/DT/3352178
Subject Headings: Dredging, Effluent quality, Water quality, Florida Keys (Fla.), Sedimentation analysis, Biota
Format: Document (PDF)

Title: Use of Ground Penetrating Radar (GPR) in a Study on Beach Morphodynamics at Red Reef Beach, Boca Raton, Florida.
Creator: Camara dos Santos Porto, Sabrina, Briggs, Tiffany Roberts, Comas, Xavier, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: The internal architecture of a beach system can provide clues into the processes involved in its formation, including depositional processes, and/or driving mechanisms (Billy et al., 2014). Several unique events such as cold fronts or Hurricane Irma caused conditions that resulted in erosion and accretion changes in Red Reef Beach - Boca Raton, throughout the year of 2017. Since the lateral extent of these changes is difficult to evaluate using traditional methods such as coring, a Ground...
Show moreThe internal architecture of a beach system can provide clues into the processes involved in its formation, including depositional processes, and/or driving mechanisms (Billy et al., 2014). Several unique events such as cold fronts or Hurricane Irma caused conditions that resulted in erosion and accretion changes in Red Reef Beach - Boca Raton, throughout the year of 2017. Since the lateral extent of these changes is difficult to evaluate using traditional methods such as coring, a Ground Penetrating Radar (GPR) was tested, which allows for a good lateral resolution (cm scale), to image the distribution and evolution of these sediments. The objectives of this study were to 1) explore the lateral variability in the internal architecture of sediments in Red Reef beach in Boca Raton (FL) using an array of ground penetrating radar (GPR) measurements constrained with coring and sediment analysis; 2) explore how dynamics of erosion and accretion induced by changes in wave activity and related to tide variation and storm events, may affect surface topography and the sedimentary internal architecture of beach deposits, using RTK GPS and GPR time-lapse measurements; 3) to explore changes in the lateral extent of the freshsaltwater interface along the beach profile in relation to tide variation and storm events. Reflectors identified in the GPR images showed some evidence of erosional and accretionary surfaces preserved in Red Reef beach. These measurements were repeated over time coinciding with certain events (such as Hurricane Irma) to explore their effects in terms of sediment erosion and accretion as reflected in changes in topography (using time-lapse GPS-RTK measurements), and changes in the internal sedimentary architecture (using time-lapse GPR measurements). The datasets collected also revealed the temporal evolution of the salt-freshwater interface, showing how the lateral extent of saltwater saturated sediment (inferred from areas of GPR signal attenuation along the profiles) evolved over time. This study shows the potential of GPR to provide information about beach sediment processes and dynamics at resolutions beyond traditional measurements (such as coring). It also shows the importance of combining methods that are complementary, such as the use of RTK GPS to explore changes in topography, and GPR that provides information on subsurface sedimentary architecture and the mechanism of change such as post-storm recovery. This study has implications for better understanding changes in coastal sedimentary deposits and processes, both at the subsurface, particularly after high-energy events, such as hurricanes, that result in rapid changes in erosion and/or accretion of sediments.
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Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00005947
Subject Headings: Dissertations, Academic -- Florida Atlantic University, Beaches--Florida, Ground penetrating radar., Sediments (Geology)--Analysis.
Format: Document (PDF)

Title: Storm-Induced Neashore Sediment Transport.
Creator: Warren, William F., Briggs, Tiffany Roberts, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Each year storms impact coastal areas, sometimes causing significant morphologic change. Cold fronts are associated with increased wave energy and frequently occur during the winter months along many coasts, such as the Atlantic and Gulf of Mexico. The higher wave energy can be responsible for a large quantity of the sediment transport resulting in rapid morphologic change. Using streamer traps, the vertical distribution of onshore-directed sediment transport during two different cold fronts...
Show moreEach year storms impact coastal areas, sometimes causing significant morphologic change. Cold fronts are associated with increased wave energy and frequently occur during the winter months along many coasts, such as the Atlantic and Gulf of Mexico. The higher wave energy can be responsible for a large quantity of the sediment transport resulting in rapid morphologic change. Using streamer traps, the vertical distribution of onshore-directed sediment transport during two different cold fronts on two low-wave energy beaches (i.e., along the northern Yucatan and southeast Florida) were compared with the resulting morphologic change. The objectives of this study are to: 1) analyze the grain size distribution (statistics) of sediment transported during a cold front, 2) compare the vertical sediment distribution throughout the water column, and 3) compare characteristics of bed sediment to the sediment within the water column. Understanding the changing grain size distribution of bottom sediments in comparison to directional transport (throughout the water column) should help determine the sediment fraction(s) being eroded or deposited, which could greatly improve predictions of storm-induced morphology change.
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Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00004830, http://purl.flvc.org/fau/fd/FA00004830
Subject Headings: Coast changes--Mathematical models., Coastal zone management., Geomorphology., Sediment transport--Analysis., Coastal engineering--Mathematical models.
Format: Document (PDF)

FAU Theses and Dissertations (8)	+ -
HBOI Faculty Contributions (5)	+ -
HBOI Technical Reports (1)	+ -

Sedimentation analysis (6)	+ -
Sediment (2)	+ -
Algae (1)	+ -
Beaches--Florida (1)	+ -
Bentonite (1)	+ -

Biota (1)	+ -
Carotenoids--Analysis (1)	+ -
Chlorophyll (1)	+ -
Chlorophyll--Analysis (1)	+ -
Clay (1)	+ -
Coast changes--Mathematical models. (1)	+ -
Coastal engineering--Mathematical models. (1)	+ -
Coastal erosion (1)	+ -
Coastal restoration (1)	+ -
Coastal zone management. (1)	+ -
Continental shelf (1)	+ -
Dissertations, Academic -- Florida Atlantic University (1)	+ -
Dredging (1)	+ -
Dunes (1)	+ -
Effluent quality (1)	+ -
Florida Keys (Fla.) (1)	+ -
Geomorphology. (1)	+ -
Ground penetrating radar (1)	+ -
Ground penetrating radar. (1)	+ -
Heating (1)	+ -
Indian River (Fla. : Lagoon) (1)	+ -
Inlets (1)	+ -
Inorganic compounds--Analysis (1)	+ -
Kaolinite (1)	+ -
Light --Scattering (1)	+ -

Electronic Thesis or Dissertation (8)	+ -
article (5)	+ -
technical report (1)	+ -

Florida Atlantic University (8)	+ -
Charles E. Schmidt College of Science (4)	+ -
Department of Geosciences (4)	+ -
Harbor Branch Oceanographic Institute (4)	+ -
Briggs, Tiffany Roberts (3)	+ -

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