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(1 - 13 of 13)
- Title
- Upwind return flow in a coastal lagoon: Seasonal-scale barotropic transport.
- Creator
- Pitts, Patrick A., Harbor Branch Oceanographic Institute
- Date Issued
- 1989
- PURL
- http://purl.flvc.org/FCLA/DT/3174021
- Subject Headings
- Lagoons, Fluid dynamics, Estuaries, Geomorphology, Tides
- Format
- Document (PDF)
- Title
- Event-driven Nearshore Sediment Transport and Morphodynamics of a Beach in Boca Raton, Florida.
- Creator
- Priddy, Michael S., Briggs, Tiffany Roberts, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
- Abstract/Description
-
Tropical storms and mid-latitude cyclones are major drivers of coastal change and damage in coastal communities. Beaches act as a first line of defense against storms, as well as provide recreation, contribute to the economy, and serve as ecological habitat for coastal flora and fauna. Throughout the year, meteorological event-driven increases in wave energy result in higher amounts of sediment transport that cause rapid coastal zone morphology alterations and threaten these beach functions....
Show moreTropical storms and mid-latitude cyclones are major drivers of coastal change and damage in coastal communities. Beaches act as a first line of defense against storms, as well as provide recreation, contribute to the economy, and serve as ecological habitat for coastal flora and fauna. Throughout the year, meteorological event-driven increases in wave energy result in higher amounts of sediment transport that cause rapid coastal zone morphology alterations and threaten these beach functions. This study uses streamer traps to evaluate cohesionless sediment dynamics in the surf zone and storm-induced morphology change in Boca Raton, Florida. The quantitative and sedimentological characteristics of sediment collected in the bottom streamer trap bins was larger grains with a higher capture weight near the seabed compared to sediment captured in the middle and upper streamer trap bins during both the cold front and the tropical storm. A greater quantity of sediment was captured in transport due to the tropical storm compared to the cold front. Morphology change observed as a result of the cold front included berm erosion, swash zone and foreshore accretion, and erosion beyond the -1.0m contour elevation. Analysis of the morphology observed post-tropical storm included berm accretion, and swash zone and foreshore erosion that continued seaward to the end of the profile. Dean number calculations using pre-cold front sediments and wave parameters predicted erosion, and the post-cold front BMAP measurements confirmed this prediction. Dean number calculations using pre-tropical storm sediments and wave parameters predicted accretion and the post-tropical storm BMAP measurements invalidated this prediction at all capture locations, although above the 1.0m contour the berm did exhibit accretion. Results of this study aim to quantify granulometric differences in event-driven sediment transport in Boca Raton, FL for improved prediction capabilities. Given the current trajectory of climate change, sea-level rise, and increased storm intensity, better understanding the morphological impact of different classes of storms is necessary to ensure and improve coastal resiliency and management.
Show less - Date Issued
- 2022
- PURL
- http://purl.flvc.org/fau/fd/FA00014005
- Subject Headings
- Sediment transport, Boca Raton (Fla.), Geomorphology, Beaches
- Format
- Document (PDF)
- Title
- MORPHOLOGIC CHANGES AND SEDIMENTOLOGICAL SIGNATURES RESULTING FROM HURRICANE IAN IN SOUTHWEST FLORIDA.
- Creator
- McCormick, W. Mathew, Roberts, Tiffany Briggs, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
- Abstract/Description
-
On September 28, 2022, Hurricane Ian, a large Category 4 hurricane, caused catastrophic damage and significant morphologic change along the southwest Florida barrier islands. This study evaluates the morphologic changes and sedimentological signatures of deposits resulting from Hurricane Ian through a combination of sediment cores, RTK-GPS beach profiles, and pre- and post-storm digital elevation models. During the storm, bidirectional sediment transport processes occurred along both...
Show moreOn September 28, 2022, Hurricane Ian, a large Category 4 hurricane, caused catastrophic damage and significant morphologic change along the southwest Florida barrier islands. This study evaluates the morphologic changes and sedimentological signatures of deposits resulting from Hurricane Ian through a combination of sediment cores, RTK-GPS beach profiles, and pre- and post-storm digital elevation models. During the storm, bidirectional sediment transport processes occurred along both developed and undeveloped shorelines, producing extensive washover deposits and ebb scour channels from the flood and ebb surges, respectively. Washover deposits contained interbedded sand and shell fragments with vertical grain size distributions dependent on position relative to the dune crest. Both washover deposits and ebb scour channels formed along dune crest elevational lows and were limited by dense vegetation and anthropogenic structures. Results from this study can be used to better constrain morphologic changes resulting from bidirectional sediment transport processes during large magnitude storm events.
Show less - Date Issued
- 2024
- PURL
- http://purl.flvc.org/fau/fd/FA00014383
- Subject Headings
- Hurricane Ian, Geomorphology--Florida, Coastal sediments
- Format
- Document (PDF)
- Title
- Geomorphology of the southeast Florida inner continental shelf: Interpretations based on remote sensing.
- Creator
- Khalil, Syed M., Florida Atlantic University, Finkl, Charles W., Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
A geomorphological map (1:24,000) was prepared delineating various morphostructures (bottom types) along the northern parts of the inner Atlantic continental shelf off Broward County. About 24 geomorphic units were identified on the basis of landform features, coastal process zones, and sediments. These units were delineated on the basis of bathymetric data, side scan sonar images, sub-bottom profiles from Chirp Sonar obtained during a geotechnical investigation and interpretation of aerial...
Show moreA geomorphological map (1:24,000) was prepared delineating various morphostructures (bottom types) along the northern parts of the inner Atlantic continental shelf off Broward County. About 24 geomorphic units were identified on the basis of landform features, coastal process zones, and sediments. These units were delineated on the basis of bathymetric data, side scan sonar images, sub-bottom profiles from Chirp Sonar obtained during a geotechnical investigation and interpretation of aerial photographs. The major morphostructures in the area are associated with three prominent shore-parallel coral/algal reef tracts. The identified morphostructures were correlated to a geomorphological coastal classification scheme developed by Finkl (1997). Each of these units is genetically related to specific process zones. The intervening sedimentary flats between the coral/algal reefs accumulate calcareous sand bodies, which are potential sources of sand used for beach renourishment. These sand sources can be quantitatively evaluated from the sub bottom profiles after calculating the dimensions of these deposits.
Show less - Date Issued
- 1999
- PURL
- http://purl.flvc.org/fcla/dt/15631
- Subject Headings
- Geomorphology--Florida--Remote sensing
- Format
- Document (PDF)
- Title
- Interpretation of beach and nearshore morphodynamics, based on detailed geomorphological mapping.
- Creator
- Benedet, Lindino, Florida Atlantic University, Finkl, Charles W.
- Abstract/Description
-
Shorelines are prefigured by inherited geologic features and spatially-defined process-form relationships that require in depth study. This thesis is based on the interpretation, delineation, and analysis of coastal geomorphological features, as mapped from large-scale (e.g. 1:3600), digital, georeferenced, stereo-paired, color, aerial photography. The morphologic features identified include coral-algae reef tracts, rock reefs, sedimentary features such as bars, troughs, and sandflats, and...
Show moreShorelines are prefigured by inherited geologic features and spatially-defined process-form relationships that require in depth study. This thesis is based on the interpretation, delineation, and analysis of coastal geomorphological features, as mapped from large-scale (e.g. 1:3600), digital, georeferenced, stereo-paired, color, aerial photography. The morphologic features identified include coral-algae reef tracts, rock reefs, sedimentary features such as bars, troughs, and sandflats, and different types of engineering works. Interrelationships between these morphologic features are analyzed using a remote sensing-GIS/MIS (Geographic and Marine Information Systems) framework, and applying interpretive approaches in the analysis of beach and nearshore morphodynamics. Sediment and wave data is used to calculate the dimensionless fall velocity (O), which combined with local geomorphology, defines beach types. Special purpose geomorphological and morphodynamic maps generated here, together with assessment of beach types and analysis of downdrift erosion provides new insights and deep understanding of large scale coastal behavior, which is of great use to management planning strategies.
Show less - Date Issued
- 2002
- PURL
- http://purl.flvc.org/fcla/dt/12969
- Subject Headings
- Geomorphological mapping, Environmental monitoring, Aerial photography in geomorphology, Coastal zone management
- Format
- Document (PDF)
- Title
- Mangrove forests.
- Creator
- Gilmore, R. G., Snedaker, S. C., Harbor Branch Oceanographic Institute
- Date Issued
- 1993
- PURL
- http://purl.flvc.org/FCLA/DT/3342299
- Subject Headings
- Mangrove forests, Physiography, Geomorphology, Mangrove plants--Florida
- Format
- Document (PDF)
- Title
- Environmental and biogeographic factors influencing ichthyofaunal diversity: Indian River Lagoon.
- Creator
- Gilmore, R. G., Harbor Branch Oceanographic Institute
- Date Issued
- 1995
- PURL
- http://purl.flvc.org/FCLA/DT/3172869
- Subject Headings
- Indian River (Fla.: Lagoon), Fish surveys, Biodiversity, Environmental geomorphology, Biogeography
- Format
- Document (PDF)
- Title
- Using unmanned aerial vehicle (UAV) surveys and traditional methods to examine influences on loggerhead sea turtle (Caretta caretta) nest site selection.
- Creator
- Manestar, Summer, Briggs, Tiffany Roberts, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
- Abstract/Description
-
This study examined the environmental and anthropogenic factors that may influence loggerhead sea turtle nest site selection and how these factors vary between successful nesting attempts and false crawls on a high-density sea turtle nesting beach in Boca Raton, Florida. Beach morphology, sand texture, and nests’ proximity to artificial structures were measured using a combination of drone-based photogrammetry, traditional surveys with Real Time Kinematic Global Positioning System (RTK GPS),...
Show moreThis study examined the environmental and anthropogenic factors that may influence loggerhead sea turtle nest site selection and how these factors vary between successful nesting attempts and false crawls on a high-density sea turtle nesting beach in Boca Raton, Florida. Beach morphology, sand texture, and nests’ proximity to artificial structures were measured using a combination of drone-based photogrammetry, traditional surveys with Real Time Kinematic Global Positioning System (RTK GPS), and sediment granulometry. Proximity to dune crossover stairs was significantly different between nests and false crawls, and the probability of a false crawl occurring decreased as proximity to dune crossover stairs increased. The results of this study will provide researchers with a new tool for nest monitoring and a better understanding of the microhabitat cues that may influence loggerhead sea turtle nest site selection and aid in guiding beach and sea turtle management decisions.
Show less - Date Issued
- 2023
- PURL
- http://purl.flvc.org/fau/fd/FA00014184
- Subject Headings
- Loggerhead sea turtles, Drone aircraft, Sea turtles--Nests, Geomorphology
- Format
- Document (PDF)
- Title
- Reconstructing predevelopment conditions of Lake Worth Creek using historical maps, accounts, and aerial photography.
- Creator
- Farnsworth, Susan O., Florida Atlantic University, Roberts, Charles
- Abstract/Description
-
This thesis develops a technique that combines the use of historical geography with photo interpretation and physical geography to reconstruct the predevelopment landcover of an urban area in southeastern Florida. This technique differs from traditional map making methods by utilizing Geographic Information System modeling procedures to create a conceptual map and test it against independent historical maps and accounts. Historical maps and accounts provided new information about the historic...
Show moreThis thesis develops a technique that combines the use of historical geography with photo interpretation and physical geography to reconstruct the predevelopment landcover of an urban area in southeastern Florida. This technique differs from traditional map making methods by utilizing Geographic Information System modeling procedures to create a conceptual map and test it against independent historical maps and accounts. Historical maps and accounts provided new information about the historic landscape that could not be deferred from present physiographic information. The resulting maps had more detail about the most highly altered areas than the conceptual map created from physiographic information.
Show less - Date Issued
- 1998
- PURL
- http://purl.flvc.org/fcla/dt/15594
- Subject Headings
- Geomorphological mapping--Florida--Lake Worth Inlet, Lake Worth Inlet (Fla )--Geography
- Format
- Document (PDF)
- Title
- Comparison of deep-water coral banks and lithoherms off southeastern U.S.A.
- Creator
- Reed, John K.
- Date Issued
- 2002
- PURL
- http://purl.flvc.org/FCLA/DT/2783221
- Subject Headings
- Coral reef ecology --Florida, Coral reef ecology --Research --Florida, Submarine topography North Atlantic Ocean, Bioherms, Geomorphology --Florida
- 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.
Show less - 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)
- Title
- Investigation of flow patterns using geochemical tracers in the Floridan aquifer system, Naples, Florida.
- Creator
- Rectenwald, E. Edward., Florida Atlantic University, Warburton, David L.
- Abstract/Description
-
This study investigated flow patterns in the FAS and tested Kohout's theory of "cyclic flow" in the vicinity of Naples, Florida. Temperature logs were analyzed to identify a reverse geothermal gradient in the Floridan aquifer system. The geochemical analysis consisted of inorganics (major cations and anions), stable isotopes (2H, 18O), radiocarbon (14C), and noble gas (He, Ne, Ar, Kr, Xe) data. The temperature logs were inconclusive in identifying a reverse geothermal gradient in the study...
Show moreThis study investigated flow patterns in the FAS and tested Kohout's theory of "cyclic flow" in the vicinity of Naples, Florida. Temperature logs were analyzed to identify a reverse geothermal gradient in the Floridan aquifer system. The geochemical analysis consisted of inorganics (major cations and anions), stable isotopes (2H, 18O), radiocarbon (14C), and noble gas (He, Ne, Ar, Kr, Xe) data. The temperature logs were inconclusive in identifying a reverse geothermal gradient in the study area. The geochemical analysis suggests that within the FAS relatively old meteoric freshwater circulates in the UFA over relatively young seawater of the MCU and LFA. The analysis also supports the possibility of vertical flow from the LFA to the UFA in the study area along with ancient meteoric recharge into the UFA during the last glacial period. The study was inconclusive in identifying "cyclic flow" in the study area.
Show less - Date Issued
- 2006
- PURL
- http://purl.flvc.org/fcla/dt/13356
- Subject Headings
- South Florida Water Management District (Fla ), Water quality--Florida--Naples--Measurement, Hydrogeology--Florida--Naples, Geomorphological tracers--Utilization, Groundwater flow--Florida--Naples
- Format
- Document (PDF)
- Title
- Stratigraphy, Paleontology, and Paleogeography of the Middle Pleistocene Tugidak Formation, Trinity Island, Alsaka.
- Creator
- Porath, Dennis A., Oleinik, Anton E., Florida Atlantic University
- Abstract/Description
-
Tugidak Island, the northenunost of the Trinity Islands off the S W coast of Kodiak Island is the stratotype of the Tugidak Formation. The continuous section ofthe Tugidak Formation crops out in the sea cliffs along the northern and southwestern parts of the island and is the most complete section in the Trinity Islands. The exposed section of the Tugidak Formation is composed of 1395 m of glacial marine diamictite containing abundant molluscan fossils. Seismic profiles and well data indicate...
Show moreTugidak Island, the northenunost of the Trinity Islands off the S W coast of Kodiak Island is the stratotype of the Tugidak Formation. The continuous section ofthe Tugidak Formation crops out in the sea cliffs along the northern and southwestern parts of the island and is the most complete section in the Trinity Islands. The exposed section of the Tugidak Formation is composed of 1395 m of glacial marine diamictite containing abundant molluscan fossils. Seismic profiles and well data indicate a regionally extensive deposition of the Tugidak Formation across the Kodiak Shelf. Paleomagnetic sampling and diatom analysis in this work has further refined the age of the Tugidak Formation as early-middle Pleistocene. By attempting a reconstruction of the tectonic evolution and through faunal identification, inferences are made about the paleobiogeography, paleoclimate and timing of sedimentary depositional cycles, around Tugidak Island.
Show less - Date Issued
- 2008
- PURL
- http://purl.flvc.org/fau/fd/FA00000810
- Subject Headings
- Tugidak Island Critical Habitat Area (Alaska), Historical geology--Alaska--Tugidak Island, Geomorphology--Alaska--Tugidak Island, Geology, Stratigraphic, Paleogeography--Alaska--Tugidak Island
- Format
- Document (PDF)
