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Carbonate sediment production by the rock-boring urchin Echinometra lucunter and associated endolithic infauna at Black Rock, Little Bahama Bank
Title
Carbonate sediment production by the rock-boring urchin Echinometra lucunter and associated endolithic infauna at Black Rock, Little Bahama Bank.
Creator
Hoskin, Charles M., Harbor Branch Oceanographic Institute
Date Issued
1985
PURL
http://purl.flvc.org/FCLA/DT/3177146
Subject Headings
Coral reef ecology, Echinometra lucunter, Erosion
Format
Document (PDF)
A sediment budget for the Choptank River Estuary in Maryland, U.S.A.
Title
A sediment budget for the Choptank River Estuary in Maryland, U.S.A.
Creator
Yarbro, Laura A., Carlson, Paul R., Fisher, T. R., Chanton, J. P., Kemp, W. M., Harbor Branch Oceanographic Institute
Date Issued
1983
PURL
http://purl.flvc.org/FCLA/DT/3173002
Subject Headings
Suspended sediments, Estuarine sediments, Estuaries, Runoff, Coast changes, Beach erosion
Format
Document (PDF)
Hurricane Irma Impact and Post-Storm Beach Morphology Evolution in Boca Raton, FL
Title
Hurricane Irma Impact and Post-Storm Beach Morphology Evolution in Boca Raton, FL.
Creator
Hart, Richard M., III, Roberts Briggs, Tiffany, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description
Beach morphology changes naturally with seasonal and event-driven variability in the wave climate, as well as due to anthropogenic activities such as erosion mitigation efforts. In 2017, category four Hurricane Irma caused beach erosion and dune overwash in Boca Raton, FL. Immediate post-storm perigean spring tides coupled with typical winter high-wind conditions imposed a regime of spatially and temporally extended meteorologic and morphologic variability. This study evaluates the...
Show moreBeach morphology changes naturally with seasonal and event-driven variability in the wave climate, as well as due to anthropogenic activities such as erosion mitigation efforts. In 2017, category four Hurricane Irma caused beach erosion and dune overwash in Boca Raton, FL. Immediate post-storm perigean spring tides coupled with typical winter high-wind conditions imposed a regime of spatially and temporally extended meteorologic and morphologic variability. This study evaluates the morphologic evolution and post-storm recovery in the first year following Hurricane Irma. Time-series topographic surveys and surface sediment samples were collected. Patterns of accretion and erosion were evaluated with regionally measured water and wind levels. Recovery morphology was generally through berm-building, but lacked shoreline stability. Storm impact regime, mitigation structures, and sediment transport patterns drove the recovery. Total volume lost above the 0 m contour due to the storm was not fully recovered within the year, with a large volume measured in the south.
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Date Issued
2019
PURL
http://purl.flvc.org/fau/fd/FA00013213
Subject Headings
Hurricane Irma, 2017, Boca Raton (Fla.), Beach erosion
Format
Document (PDF)
EVALUATION OF LOCAL OFFSHORE SEDIMENTS FOR COASTAL RESTORATION PROJECTS IN PALM BEACH COUNTY, FL, USA
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)
Morphologic Evolution and Alongshore Variability of Two Nourishment Projects in Southeast FL, USA
Title
Morphologic Evolution and Alongshore Variability of Two Nourishment Projects in Southeast FL, USA.
Creator
Shahan, Thomas A., Roberts Briggs, Tiffany, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description
For the last several decades, beach nourishment has been a widely implemented erosion mitigation strategy along many developed coastlines. Measuring subsequent patterns of erosion and accretion can help elucidate local sediment transport trends, improve time scale predictions of profile equilibration, decrease renourishment intervals, and adjust future engineering design of nourishments. This study evaluates the morphologic evolution of two beach nourishment projects (e.g., characterized as a...
Show moreFor the last several decades, beach nourishment has been a widely implemented erosion mitigation strategy along many developed coastlines. Measuring subsequent patterns of erosion and accretion can help elucidate local sediment transport trends, improve time scale predictions of profile equilibration, decrease renourishment intervals, and adjust future engineering design of nourishments. This study evaluates the morphologic evolution of two beach nourishment projects (e.g., characterized as a full and partial nourishment) at the same location in Boca Raton, Florida using time series beach profiles, surface sediment samples, and wave data. More than 85% of sediment volume was retained within the full nourishment six months after project completion, compared to 50% retained eight months after completion of the partial nourishment. Wave energy largely influenced immediate post nourishment change. Profile equilibration was controlled by high-energy events (i.e., hurricanes) for both nourishments.
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Date Issued
2018
PURL
http://purl.flvc.org/fau/fd/FA00005973
Subject Headings
Beach nourishment, Florida--Boca Raton, Erosion--Florida, Sediment transport
Format
Document (PDF)
Sand Compositional Analysis Using a Combined Geological and Spectroscopic Approach
Title
Sand Compositional Analysis Using a Combined Geological and Spectroscopic Approach.
Creator
Smith, Molly E., Oleinik, Anton E., Zhang, Caiyun, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description
Many minerals, such as calcite and magnetite, show diagnostic overtone and combination bands in the 350-2500 nm window. Sand, though an important unconsolidated material with great abundance on the Earth’s surface, is largely overlooked in spectroscopic studies. Over 100 sand samples were analyzed through traditional microscopic methods and compared to spectral reflectance collected via an ASD Spectroradiometer. Multiple methods were chosen to compare spectroscopic data to sand composition...
Show moreMany minerals, such as calcite and magnetite, show diagnostic overtone and combination bands in the 350-2500 nm window. Sand, though an important unconsolidated material with great abundance on the Earth’s surface, is largely overlooked in spectroscopic studies. Over 100 sand samples were analyzed through traditional microscopic methods and compared to spectral reflectance collected via an ASD Spectroradiometer. Multiple methods were chosen to compare spectroscopic data to sand composition and grain size: 1) existing spectral indices, 2) continuum removal, 3) derivative analysis, and 4) correlation analysis. Particular focus was given to carbonate content. Results from derivative and correlation analysis showed strong correlations in the 2180-2240 nm and 2300-2360 nm windows to carbonate content. Proposed here is the Normalized Difference Carbonate Sand Index (NDCSI), which showed Pearson correlations of r=-0.78 for light-colored samples and r=-0.77 for all samples used. This index is viable for use with carbonate-rich sands.
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Date Issued
2016
PURL
http://purl.flvc.org/fau/fd/FA00004634
Subject Headings
Physical geology., Environmental geology., Coast changes--Analysis., Beach erosion., Sand--Optical properties., Spectrophotometry.
Format
Document (PDF)
Evaluation of shore protection measures applied to eroding beaches in Florida
Title
Evaluation of shore protection measures applied to eroding beaches in Florida.
Creator
Esteves, Luciana Slomp, Florida Atlantic University, Finkl, Charles W., Department of Geosciences, Charles E. Schmidt College of Science
Abstract/Description
Evaluations of shore erosion and protection in Florida are constrained by time and space. This study characterizes about 95% of Florida's beaches based on the degree of urban development, direction and rates of shoreline change, presence of sensitive ecological communities, and distribution of sea defense works. The 22 coastal-county maps prepared for this study show that approximately 195 km (16%) of Florida's beaches are eroding and 283 km (23%) are protected by engineering works. About 72%...
Show moreEvaluations of shore erosion and protection in Florida are constrained by time and space. This study characterizes about 95% of Florida's beaches based on the degree of urban development, direction and rates of shoreline change, presence of sensitive ecological communities, and distribution of sea defense works. The 22 coastal-county maps prepared for this study show that approximately 195 km (16%) of Florida's beaches are eroding and 283 km (23%) are protected by engineering works. About 72% of eroded beaches are geographically associated with inlets. Sand management at inlets is crucial to improve erosion mitigation in Florida. Suggestions designed to enhance mitigation of beach erosion are based on comparative analyses of potential environmental impacts, costs, and limitations of shore protection works. Alternative technologies that use combined techniques (i.e. bed fluidization/jet-pumps, beach nourishment/dewatering systems, or detached breakwaters) are more efficient, less expensive, and less environmentally hazardous than conventional methods.
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Date Issued
1997
PURL
http://purl.flvc.org/fcla/dt/15473
Subject Headings
Beach erosion--Florida, Coast changes--Florida, Shore protection--Florida, Coastal zone management--Florida
Format
Document (PDF)
Potential applications for recycled glass in beach management: Emergency stabilization of erosional "hot spots" in Broward County, Florida
Title
Potential applications for recycled glass in beach management: Emergency stabilization of erosional "hot spots" in Broward County, Florida.
Creator
Kerwin, Loisa, Florida Atlantic University, Finkl, Charles W., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description
In Florida beach renourishment is the preferred management technique used to maintain the integrity of local beaches, which generate over 7.9 billion a year in revenues from tourism. Beaches are dynamic and often exhibit accelerated rates of erosion and shoreline retreat. Sites that erode more than twice the regional background rate are classified as "erosional hot spots" (EHS). Emergency remediation of EHS is necessary to avoid loss of beach sand from renourished beaches. Because suitable...
Show moreIn Florida beach renourishment is the preferred management technique used to maintain the integrity of local beaches, which generate over 7.9 billion a year in revenues from tourism. Beaches are dynamic and often exhibit accelerated rates of erosion and shoreline retreat. Sites that erode more than twice the regional background rate are classified as "erosional hot spots" (EHS). Emergency remediation of EHS is necessary to avoid loss of beach sand from renourished beaches. Because suitable offshore borrow materials are limited in Broward County, coastal managers are seeking alternative sources of compatible beach fill materials. The manufacturing of glass sand from processed recycled glass is a new, innovative technology. This report evaluates the potential application of glass sand for EHS remediation along renourished shores. Benefits of processed glass sand are: (1) preferred grain size by crushing of recycled glass, (2) an environmentally inert material, and (3) physical properties similar to the composition and color of native sand. The recycling industry in Florida generates almost 100,000 m^3 of glass a year, 30% of which is unsuitable for recycling. Alternative uses for waste glass cullet are being sought to reduce the high cost of disposal in landfills.
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Date Issued
1997
PURL
http://purl.flvc.org/fcla/dt/15453
Format
Document (PDF)
Inlet-Adjacent Shoreline Behavior at Three Stabilized Inlets in Palm Beach County, FL (USA)
Title
Inlet-Adjacent Shoreline Behavior at Three Stabilized Inlets in Palm Beach County, FL (USA).
Creator
Vandamas, Edward A, Briggs, Tiffany Roberts, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description
Shorelines are a primary source of attraction for the nearly two million tourists who visit Palm Beach County annually. Many of Palm Beach County beaches are located on barrier islands, separated by a series of inlets which serve as access points to the Intracoastal Waterway. However, inlets are often cited as a source of erosion, through interruption of littoral drift and interaction with nearshore hydrodynamics (e.g., causing wave diffraction or refraction). In an effort to mitigate...
Show moreShorelines are a primary source of attraction for the nearly two million tourists who visit Palm Beach County annually. Many of Palm Beach County beaches are located on barrier islands, separated by a series of inlets which serve as access points to the Intracoastal Waterway. However, inlets are often cited as a source of erosion, through interruption of littoral drift and interaction with nearshore hydrodynamics (e.g., causing wave diffraction or refraction). In an effort to mitigate potential negative impacts of the economically important tidal inlets, Palm Beach County has installed a sand transfer plant (STP) at two inlet locations, the Lake Worth Inlet and the South Lake Worth Inlet. Through analysis of annual aerial photography and beach profile surveys taken between 2000 and 2009, this study will determine what effect, if any, these sand transfer plants are having on the inlet-adjacent shorelines north and south of the two inlets with STP, as well as an inlet without an STP (Boca Inlet). This study hopes to increase the understanding of shoreline dynamics in Palm Beach County, which could recognize important alongshore patterns, such as the occurrence of erosional hot spots, to assist in future mitigation efforts.
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Date Issued
2015
PURL
http://purl.flvc.org/fau/fd/FA00004554, http://purl.flvc.org/fau/fd/FA00004554
Subject Headings
Beach erosion -- Florida -- Lake Worth Inlet -- Prevention, Beach erosion -- Florida -- South Lake Worth Inlet -- Prevention, Coastal changes -- Florida -- Palm Beach County, Coastal zone management -- Florida -- Palm Beach County, Geodynamics, Soil conservation -- Florida -- Lake Worth Inlet, Soil conservation -- Florida -- South Lake Worth Inlet, Sustainable development
Format
Document (PDF)