Abstract
Changing wave climates and sea levels are leading to enhanced pressures on coastal communities and infrastructure. Coastal managers require better predictive tools in order to predict current and future coastal evolution and mitigate the potential impacts of coastal erosion and flooding. This contribution utilises a longshore extension and simplification of the Forecasting Coastal Evolution (ForCE; Davidson, 2021) profile model to examine the shoreline evolution of the Collaroy-Narrabeen embayment. The resulting one-line model combines cross-shore and longshore sediment transport processes, and unlike previous one-line models of this kind, both (longshore/cross-shore) terms are derived from the same theoretical arguments. Both model components are founded on equilibrium principles, whereby sediment transport is directly related to the disequilibrium in longshore and cross-shore components of wave energy dissipation.References
Davidson, Turner, Splinter, Harley (2017): Annual prediction of shoreline erosion and subsequent recovery, COASTAL ENGINEERING, vol. 130, pp.14-25.
Davidson (2021): Forecasting coastal evolution on time-scales of days to decades, COASTAL ENGINEERING, vol. 168, 103928
Harley, Turner, Short, Ranasinghe (2011): A reevaluation of coastal embayment rotation: The dominance of cross-shore versus alongshore sediment transport processes, Collaroy-Narrabeen Beach, southeast Australia. JOURNAL OF GEOPHYSICAL RESEARCH, Vol. 116, F04033
Turner, Harley, Short, Simmons, Bracs, Phillips, Splinter (2016): A multi-decade dataset of monthly beach profile surveys and inshore wave forcing at Narrabeen, Australia. SCIENTIFIC DATA
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Copyright (c) 2023 Emily Hunt, Mark Davidson, Edward Steele, Timothy Scott, Paul Russell