. Analytical solutions of the one-line model of shoreline change. Coast changes; Beach erosion; Shore protection. y2(x,t) = ol r2 o2 (91) for t > 0 and x > 0 . The quantity a represents a mean diffracted wave angle behind the seawall. The solution in nondimensional form is presented in Figure 40 (expressed in terms of the coastal constant ei)-. -2 -1 0 1 ALONGSHORE DISTANCE (x/L) Figure 40. Shoreline evolution in the vicinity of a seawall where erosion and flanking may occur behind it (a = rad , a „ = rad , 6 = ) ' ! o2 82. A characteristic length L is chosen to n
. Analytical solutions of the one-line model of shoreline change. Coast changes; Beach erosion; Shore protection. y2(x,t) = ol r2 o2 (91) for t > 0 and x > 0 . The quantity a represents a mean diffracted wave angle behind the seawall. The solution in nondimensional form is presented in Figure 40 (expressed in terms of the coastal constant ei)-. -2 -1 0 1 ALONGSHORE DISTANCE (x/L) Figure 40. Shoreline evolution in the vicinity of a seawall where erosion and flanking may occur behind it (a = rad , a „ = rad , 6 = ) ' ! o2 82. A characteristic length L is chosen to normalize the shoreline position. In Figure 40 the time has been normalized by use of the quantity L2/el . Shoreline Change at a Jetty, Including Diffraction 83. In the shadow zone of a long groin or jetty, it may be an 63. 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 Larson, Magnus; Hanson, Hans; Kraus, Nicholas C; U. S. Army Engineer Waterways Experiment Station; Coastal Engineering Research Center (U. S. ); United States. Army. Corps of Engineers. [Vicksburg, Miss. : U. S. Army Engineer Waterways Experiment Station ; Springfield, Va. : available from National Technical Information Service]
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