SYMBOLS AND DEFINITIONS 



D(max) Elevation of highest wave crest above the mean water level 



B pms Root mean square water surface displacement 



e Spectral width parameter 



H Wave height 



H Average wave height 



H(max) Maximum wave height 



H g Average of the highest one-third of the wave heights 



N c Number of wave crests in a length of wave record 



N^ Number of runup crests 



N 3 Number of zero up -crossings in a length of wave record 



? x Pressure head, in feet of water relative to Stillwater level, 



which is exceeded x percent of the time 



R Wave runup, average of the runup crests 



R(max) Maximum runup 



Vertical elevs 



percent of the time by runup 



SWL Stillwater level 



T Wave period 



T Mean zero up-crossing wave period 



