. The Annual bulletin of the Beach Erosion Board. Coastal engineering; Shore protection; Beach erosion. FIGURE 2. RIPPLE TANK-SCREEN SHOWING EXAMPLE OF WAVE REFRACTION, DIFFRACTION AND REFLECTION The eccentricity of the pusher arm on the disc can be continuously varied from 0 to approximately 10 inches using a screw-driven connection. The wave generating mechanism (shown on Figure 3) can produce a continuous range of wave heights from 0 to approximately 8 inches, and a continuous rjinge of wave periods from to seconds. A riprap-type wave absorber behind the generating bulk- head has a
. The Annual bulletin of the Beach Erosion Board. Coastal engineering; Shore protection; Beach erosion. FIGURE 2. RIPPLE TANK-SCREEN SHOWING EXAMPLE OF WAVE REFRACTION, DIFFRACTION AND REFLECTION The eccentricity of the pusher arm on the disc can be continuously varied from 0 to approximately 10 inches using a screw-driven connection. The wave generating mechanism (shown on Figure 3) can produce a continuous range of wave heights from 0 to approximately 8 inches, and a continuous rjinge of wave periods from to seconds. A riprap-type wave absorber behind the generating bulk- head has a face slope of 30° with the horizontal and is held in place by 1/2-inch wire mesh. Figure 4 is a general view of the tank taken near the beach (glass) end. "Seventy-two-foof'Tank. - This glass and steel tank is 72 feet long, 1-1/2 feet wide, and 2 feet deep. At the opposite end from the generator, glass walls extend 54 feet on one side and 30 feet on the other. The wave generator is a replica of that in the "ninety-six-foot'tank and identical wave characteristics can be obtained. The wave absorber behind the generating blade is also of the same design. Level rods on each side of this tank run the entire tank length and permit measurements from a level base. Figure 5 is a view along this tank taken from the beach 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 United States. Beach Erosion Board; United States. Army. Corps of Engineers. Washington, D. C. : Beach Erosion Board
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Keywords: ., boo, bookauthorunitedstatesarmycorpsofengineers, bookcentury1900
