Year
2024
Season
Fall
Paper Type
Master's Thesis
College
College of Computing, Engineering & Construction
Degree Name
Master of Civil Engineering: Coastal and Port Engineering (MSCE)
Department
Engineering
NACO controlled Corporate Body
University of North Florida. School of Engineering
First Advisor
Dr. Raphael Crowley
Second Advisor
Dr. Christopher Bender
Third Advisor
Dr. Cigdem Akan
Department Chair
Dr. Alan Harris
College Dean
William Klostermeyer
Abstract
This study investigates shoreline erosion at Brickhill Bluff along the Brickhill River in Cumberland Island National Seashore using ADCIRC. Two scenarios were modeled during this research: bed stresses during regular tidal cycles and bed stresses during worst-case storm (i.e., hurricane) conditions. Velocities from these models were used to compute bed shear stresses and these stresses were compared to siteβs sediment critical shear stress. Results appear to show that a meander in the Brickhill River causes relatively high (i.e., on the order of 0.27 π/π2 ) shear stresses during regular tidal cycles and even higher (i.e., on the order of 0.56 π/π2 ) stresses during worst-case storm events. When compared to the sediment critical shear stress (on the order of 0.03 π/π2 ), these data suggest that the chronic erosion that has been observed at Brickhill Bluff will likely continue if mitigation measures are not implemented. And, these data suggest that any mitigation measures that are taken to reduce erosion at Brickhill Bluff would need to be significant in the context of either reducing stress or providing soil retention for the eroding shoreline.
Suggested Citation
Harrigan, Christopher, "Analysis of shoreline erosion at Cumberland Island using advanced circulation (ADCIRC) modeling" (2024). UNF Graduate Theses and Dissertations. 1315.
https://digitalcommons.unf.edu/etd/1315
