OVERLOAD BORE PROPAGATION DUE TO AN OVERTOPPING WAVE.

Traditional theories explaining wave run-up and overtopping of a slope have been formulated in an attempt to define safe or acceptable design heights for coastal structures. However, to date no theory has been formulated to predict what happens to the overtopping wave once it has cleared the berm crest. This information is necessary in order to define a safe setback or ground clearance for buildings which might be located on a gravel island deck. The existing theories only provide the discharge onto the island at the point of overtopping. The formulation given in this paper is a simplified first approximation of the character of the bore of water propagating from an overtopping wave.