Simulation data of barrier migration behavior and morphology from Barrier3D

Barrier3D (version 1.0) simulation results of barrier migration behavior and morphology across a range of input conditions. Simulations vary by average number of storms per year (4-12), characteristic dune growth rate (0.3-0.9 yr^-1), relative sea-level rise rate (2-8 mm/yr), level of storminess (low-high), and shoreface response rate (1,000-10,000 m^3/m/yr). Each row in the spreadsheet represents a unique model simulation; to account for storm stochasticity in the model, each unique combination of parameter values was simulated 100 times. Simulations run for 1,000 model years or until the barrier drowns. Punctuated retreat is determined to occur if the simulation includes two or more alternating periods of both transgression and relative immobility. Periods of immobility (transgression) are defined as 30 years or more of shoreline change rates (SCR) under (over) 0.5 m/yr. To test the sensitivity of these values, the statistics for punctuated retreat are calculated (for a subset of the simulations) using higher and lower duration (20-40 yrs) and SCR (0.25-0.75 m/yr) thresholds.