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Analysis of nearshore turbidity plumes using passive multispectral archive satellite data: Interactions of tidal current and bathymetry in Broward County, Florida
Title
Analysis of nearshore turbidity plumes using passive multispectral archive satellite data: Interactions of tidal current and bathymetry in Broward County, Florida.
Creator
DaPrato, Gary Wayne., Florida Atlantic University, Finkl, Charles W.
Abstract/Description
The interaction of tidal currents and bathymetry in the nearshore environment is investigated as an essential component in the study of cross-shore turbidity plumes. Clay and silt-sized grains which comprise a minor portion of natural beaches and artificial fills are modulated through the water column by nearshore currents. Tidal jets and undertow currents are forcing factors in the expansion of circulation currents that carry fine-grained suspended sediments offshore in large mega-plumes....
Show moreThe interaction of tidal currents and bathymetry in the nearshore environment is investigated as an essential component in the study of cross-shore turbidity plumes. Clay and silt-sized grains which comprise a minor portion of natural beaches and artificial fills are modulated through the water column by nearshore currents. Tidal jets and undertow currents are forcing factors in the expansion of circulation currents that carry fine-grained suspended sediments offshore in large mega-plumes. Enhanced contextual coverages from satellite imagery delineating plume morphology show a strong relationship between bathymetry and tidal current. The forces exerted by tidal action and frictions resisting this movement are examined by incorporating techniques of image processing, modeling, and statistical analysis in a GIS database environment. This analysis examines an experimental anisotropic cost distance algorithm that is utilized in the modeling of turbidity plumes to better understand the dispersion of suspended sediments in coastal Broward County.
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Date Issued
1995
PURL
http://purl.flvc.org/fcla/dt/15154
Subject Headings
Remote sensing--Florida--Broward County, Coastal zone management--Florida--Broward County, Marine sediments--Florida, Turbidity currents
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)
Perceived risk versus actual risk to sea-level rise: a case study in Broward County, Florida
Title
Perceived risk versus actual risk to sea-level rise: a case study in Broward County, Florida.
Creator
Bolter, Keren P., Hindle, Tobin, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description
Global climate change stressors downscale to specific local vulnerabilities, requiring customized adaptation strategies. Southeast Florida has a high likelihood of sealevel rise impact to due to the low-lying porous limestone geology. High risk is coupled with high exposure due to high-valued coastal properties, productive ecosystems, and dense populations. Coastal populations are particularly at risk due to erosion, inundation and storm surge, but interior populations are also susceptible to...
Show moreGlobal climate change stressors downscale to specific local vulnerabilities, requiring customized adaptation strategies. Southeast Florida has a high likelihood of sealevel rise impact to due to the low-lying porous limestone geology. High risk is coupled with high exposure due to high-valued coastal properties, productive ecosystems, and dense populations. Coastal populations are particularly at risk due to erosion, inundation and storm surge, but interior populations are also susceptible to rising water tables and extended periods of inundation. All of these impacts are amplified by sea-level rise. Robust sea-level rise adaptation options require significant economic costs. If perceived risk does not adequately line up with actual risk, lack of funds and preparation will prevent implementation of the most effective strategies.
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Date Issued
2014
PURL
http://purl.flvc.org/fau/fd/FA00004268, http://purl.flvc.org/fau/fd/FA00004268
Subject Headings
Climatic changes -- Florida -- Broward County -- Case studies, Coastal ecology -- Florida -- Broward County -- Case studies, Coastal zone management -- Florida -- Broward County -- Case studies, Hazardous geographic environments -- Florida -- Broward County -- Case studies, Sea level -- Florida -- Broward County -- Case studies
Format
Document (PDF)