Wave Runup
“Estimates of maximum wave runup on rough, impermeable sloping structures (riprap revetments) are necessary to determine whether overtopping will occur for a specified wave condition and water level. Design formulas were originally developed based on theory and small-scale laboratory experiments using regular waves. As laboratories acquired the capability to generate more realistic irregular waves, improved wave runup formulas were proposed based on wave parameters representative of the irregular wave train. However, unlike regular waves that result in a single value of maximum wave runup, irregular waves produce a runup distribution. Thus, it was necessary for the runup formulas to determine a representative parameter of the wave runup distribution. Presently, the most common irregular wave runup parameter is Ru2%. This parameter is defined as the vertical distance between the still-water level (swl) and the elevation exceeded by 2 percent of the runup values in the distribution. In other words, for every 100 waves running up a slope, two waves would have a runup elevation exceeding the level estimated by Ru2%”.[1]
Examples
Best Practices Resources
Estimating Irregular Wave Runup on Rough, Impermeable Slopes (ERDC-CHL CHETN-III)
Trainings
Citations:
Revision ID: 2629
Revision Date: 09/09/2022