4.2. 1 Flume and structure 54 



4.2.2 Experimental test conditions 56 



4.2.3 Armor layer and iinderlayer 56 



4.2.4 Model-Prototype similitude 60 



4.3 Wave Generation and Measurement in Initial Experiment 62 



4.3. 1 Wave generation 62 



4.3.2 Wave measurement 64 



4.4 Effect of Overtopping on Stability 74 



4.5 Armor Profiler and Profile Measuring Technique 74 



5 DAMAGE MEASUREMENTS 81 



5.1 Overview 81 



5.2 Damage and Eroded Profile Parameters 83 



5.3 Probability Density Functions of Damage, Eroded Depth, and 



Cover Depth 85 



5.4 Temporal Damage Development 90 



5.5 Characteristics of Profile Erosion 100 



6 DAMAGE AND ERODED PROFILE PREDICTION 110 



6.1 Damage Variability 110 



6.2 Eroded Profile Prediction Ill 



6.3 Temporal Damage Development 117 



7 EFFECT OF WAVE PERIOD AND ARMOR GRADATION ON 



DAMAGE PROGRESSION 127 



7.1 Experimental Setup and Test Conditions 127 



7.2 Probability Density Fimctions of Damage, Eroded Depth, and 



Cover Depth 131 



7.3 Damage Variability 133 



7.4 Eroded Profile Prediction 134 



7.5 Temporal Damage Development 139 



8 SUMMARY AND CONCLUSIONS 144 



IV 



