. Characteristics of reef breakwaters. Breakwaters; Ocean waves; Water waves. SUBSET 5 APPROXIMATE THRESHOLD OF STONE MOVEMENT SUBSET Bn 1 337 3 450 5 631 7 222 9 222. SPECTRAL STABILITY NUMBER, N Figure 9. Damage trends of the relative crest height as a function of the spectral stability number for the stability subsets 1, 3, 5, 7, and 9 Table 4 Average Values of Secondary Stability Variables by Subset Subset No. 1 3 5 7 9 Relative Crest Height "as Built" h'/d c s Reef Size B * n 337 450 631 222 222 Eftective Reef Slope "as Built" c'** 1 .90 1 80 1
. Characteristics of reef breakwaters. Breakwaters; Ocean waves; Water waves. SUBSET 5 APPROXIMATE THRESHOLD OF STONE MOVEMENT SUBSET Bn 1 337 3 450 5 631 7 222 9 222. SPECTRAL STABILITY NUMBER, N Figure 9. Damage trends of the relative crest height as a function of the spectral stability number for the stability subsets 1, 3, 5, 7, and 9 Table 4 Average Values of Secondary Stability Variables by Subset Subset No. 1 3 5 7 9 Relative Crest Height "as Built" h'/d c s Reef Size B * n 337 450 631 222 222 Eftective Reef Slope "as Built" c'** 1 .90 1 80 1 .76 1 88 1 .88 * B bulk number, defined by Equation 3. n ** C effective reef slope, "as built," defined by Equation 4, 19. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ahrens, John P; United States. Army. Corps of Engineers; U. S. Army Engineer Waterways Experiment Station; Coastal Engineering Research Center (U. S. ). [Vicksburg, Miss. : U. S. Army Engineer Waterways Experiment Station ; Springfield, Va. : available from National Technical Information Service]
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