APPENDIX E: NOTATION 



a Empirical runup coefficient 



A Empirical runup coefficient 



Empirical coefficient for prediction of economic losses 

 due to wave attack 



Aq Average eroded cross sectional breakwater area 



b Empirical runup coefficient 



B Breakwater crest width 



Empirical runup coefficient 



C A parameter of the Weibull probability distribution 



Empirical coefficient for wave transmission by overtopping 



D' Dimensionless breakwater damage 



D^ Breakwater damage rate (armor displacement per unit time) 



D^c Sediment size from a graded sample for which 15 percent is finer 

 by weight 



Dg^ Sediment size from a graded sample for which 85 percent is finer 

 by weight 



Dj^cQ "Nominal" or equivalent cube dimension of the mean stone weight 

 of a graded sample based on size gradation analysis 



E{k} Mathematical expectation 



f(x) Statistical probability density function of x 



F Freeboard 



F(x) Cumulative probability density function of x 



g Acceleration of gravity 



h Eroded breakwater crest height 



h' Original breakwater crest height 



H Wave height 



H* Critical wave height regarding wave transmission 



Hjj Design wave for armor unit sizing 



H- Incident wave height 



Hj^Q Maximum wave height below which economic losses can be neglected 

 due to wave attack 



H Significant wave height 



Hi^ Transmitted wave height 



Kj Empirical armor stability coefficient, as applied in the Hudson 

 formula 



El 



