American Society of Civil Engineers

Splash-Up and Overtopping of Shoreline Structures

by Fredric Raichlen, (Prof., Civil Engr. And Mech. Engr, Calif. Inst. of Tech., Pasadena, CA, 91125, USA), Ying Li, (Grad. Res. Assist., Calif. Inst. of Tech., Pasadena, CA, 91125, USA), Ying Poon, (Everest Intern’t Consult., 444 West Ocean Blvd., Long Beach, CA, 90802, USA), and Russell Boudreau, (Moffatt & Nichol Engineers, P.O. Box 7707, Long Beach, CA, 90807, USA)
Section: Part III Coastal Structures, pp. 2128-2141, (doi:

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Document type: Conference Proceeding Paper
Part of: Coastal Engineering 2000
Abstract: This study deals with both the investigation of the splash-up and overtopping of a seawall at a particular coastal site by storm waves and the more fundamental investigation of the splash-up of solitary waves on a vertical wall located on a plane slope. The former showed the effects on the overtopping rate of the nearshore bathymetry and of modifications to an existing structure. The latter study was directed at tsunami mitigation measures in a combined experimental and numerical investigation. It also demonstrated the effect of nearshore bathymetry on wall splash-up, and it was found that for a given wave height the position of the wall on the plane slope was of critical importance to the maximum splash-up. A numerical model predicted the splash-up-time history for non-breaking and broken solitary waves reasonably well. The maximum splash-up was found to be a unique function of the maximum slope of the front face of the waves which in turn is dependent on offshore wave height, depth, offshore bathymetry, and wall location relative to the shoreline.

ASCE Subject Headings:
Coastal structures
Wave overtopping
Sea walls