Nicole Færch Christensen, Mads Sønderstrup Røge, Jonas Bjerg Thomsen, Thomas Lykke Andersen, Hans Falk Burcharth, Jorgen Quvang Harck Nørgaard


In this paper, the investigation of overtopping on rubble mound breakwaters for low steepness waves in both deep and shallow-water conditions are presented. The existing formulae provide quite different results for long waves for both conventional and berm breakwaters. Therefore, new model tests with focus on long waves have been performed for both types of breakwaters. The new model tests showed some deviation from the formulae. Therefore, limitations in the use of the present methods and an update for one of the methods are presented.


overtopping; conventional rubble mound breakwater; berm breakwater; long waves

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Burcharth, H.F. (2004). On Scale Effect Related to Runup and Overtopping for Rubble Mound Structures. Report of EU-research project CLASH.

Burcharth, H.F. and Lykke Andersen, T. (2007). Scale effects related to Small Physical Modelling of Overtopping of Rubble Mound Breakwaters. Proc. Coastal Structures, Venice, 2007.

EurOtop Manual. (2007). Overtopping Manual; Wave Overtopping of Sea Defences and Related Structures - Assessment Manual. UK: Allsop, N.W.H, Pullen, T., Bruce, T. NL: van der Meer, J.W., DE: Schüttrumpf, H., Kortenhaus, A. www.overtopping-manual.com.

Helgason, E. and Burcharth, H.F. (2006). Comparison between Overtopping Discharge in Small and Large Scale Models. Proc. Int. Conference on Coastal Engineering 2006. San Diego, California, U.S.A.

Lykke Andersen, T. 2006. Hydraulic Response of Rubble Mound Breakwaters: scale effects - berm breakwaters. Ph.D.-thesis, Hydraulics & Coastal Engineering Laboratory, Department of Civil Engineering, Aalborg University, Aalborg. Series Paper, nr. 27.

Lykke Andersen, T., Burcharth, H.F., Gironella, X. 2011 Comparison of new large and small scale overtopping tests for rubble mound breakwaters Coastal Engineering, 58, pp. 351-373.

Røge, M. S., Thomsen, J. B., Christensen, N. F., Andersen, T. L., Burcharth, H. F. 2014. Rock Armour Stability in Shallow Water Waves of Low Steepness. A New Stability Formula, Submitted to Coastal Engineering for review

Sigurdarson, S. and J. W. van der Meer. 2013. Design of berm breakwaters, recession, overtopping and reflection. Proc. ICE, Coasts, Marine Structures and Breakwaters 2013, Edinburgh, UK.

Thomsen, J.B., Røge, M.S., Christensen, N.F., Andersen, T.L. and van der Meer, J.W. 2014. Stability of Hardly Reshaping Berm Breakwaters Exposed to Long Waves. Proceedings of the 34th International Conference on Coastal Engineering, 2014, Seoul, Korea.

Van Gent, M.R.A., van den Boogaard, H.F.P., Pozueta, B, Medina, J.R. 2007. Neural network modelling of wave overtopping at coastal structures.

DOI: https://doi.org/10.9753/icce.v34.structures.6