ICCE 2022

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WAVE TRANSFORMATION AND RUNUP VARIABILITY DUE TO WAVE PHASE UNCERTAINTY. (2023). Coastal Engineering Proceedings, 37, waves.44. https://doi.org/10.9753/icce.v37.waves.44


Wave runup is a significant portion of total water levels, particularly during storms (Sallenger, 2000). This makes accurate prediction of wave runup paramount. Wave runup can be estimated using simplified empirical models (e.g. Stockdon et al 2006) or simulated using phase-resolved Bousinesq models (Shi et al 2007, Lynett et al 2002) or non-hydrostatic models (e.g. Zijlema et al 2011). These models typically have a variety of offshore boundary input options ranging from spectral to time series, with the most broadly used being spectral parameterizations (e.g. JONSWAP, TMA, etc.) or direct spectral input, both of which neglect phase information at the offshore boundary. Recent research has highlighted the importance of the offshore boundary condition and wave phase at modeling wave runup (e.g. Fiedler et al 2019, Rutten 2021). This work pays careful attention to the consequences of the bound infragravity (IG) wave and explores the influence that unknown phase information can have on predicted wave transformation and resultant wave runup in the context of field observations.


Fiedler, J. W., Smit, P. B., Brodie, K. L., McNinch, J., & Guza, R. T. (2019). The offshore boundary condition in surf zone modeling. Coastal Engineering, 143, 12-20.

Kim, D. H., Lynett, P. J., & Socolofsky, S. A. (2009). A depth-integrated model for weakly dispersive, turbulent, and rotational fluid flows. Ocean Modelling, 27(3-4), 198-214.

O’Dea, A., Brodie, K. L., & Hartzell, P. (2019). Continuous coastal monitoring with an automated terrestrial lidar scanner. Journal of Marine Science and Engineering, 7(2), 37.

Rutten, J., Torres-Freyermuth, A., & Puleo, J. A. (2021). Uncertainty in runup predictions on natural beaches using XBeach nonhydrostatic. Coastal Engineering, 166, 103869.

Shi, F., Kirby, J. T., Harris, J. C., Geiman, J. D., & Grilli, S. T. (2012). A high-order adaptive time-stepping TVD solver for Boussinesq modeling of breaking waves and coastal inundation. Ocean Modelling, 43, 36-51.

Stockdon, Hilary F., Rob A. Holman, Peter A. Howd, and Asbury H. Sallenger Jr. (2006): "Empirical parameterization of setup, swash, and runup." Coastal engineering 53, no. 7 573-588.

Sallenger Jr, Asbury H. "Storm impact scale for barrier islands." Journal of coastal research (2000): 890-895.

Zijlema, Marcel, Guus Stelling, and Pieter Smit. "SWASH: An operational public domain code for simulating wave fields and rapidly varied flows in coastal waters." Coastal Engineering 58, no. 10 (2011): 992-1012.

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Copyright (c) 2023 A. Spicer Bak, Patrick Lynett, Matt Malej, Gabriela Salgado, Tyler Hesser, Katherine Brodie