b. Wave Conditions on Ocean Side of Island : Hindcast wave statistics are 

 available for several U.S. east coast locations in Corson, et al. (1981), 

 Corson et al. (1982), and Jensen (1983). Data are available from the mouth 

 of Delaware Bay; but deepwater wave data are chosen for statistical analysis 

 to demonstrate the method of transforming data from deep water to another 

 location in shallow water (i.e., the island site). (See Figure 8-15 for 

 station 4 location and Table 8-4 for data.) 



(1) Idealized Refraction Analysis (see Ch. 2, Sec. III) . For 

 purposes of this problem, refraction by straight parallel bottom contours will 

 be assumed. 



Azimuth of shoreline = 30° (see Fig. 8-17) 



(2) Wave Directions. 



The hindcast statistics are available for the Atlantic coast and the 

 Great Lakes. They will be available for the Pacific and gulf coasts 

 at a future date. 



a is the angle between the direction of wave approach and a normal 

 to the shoreline. 



Used for typical refraction calculations given on following pages. 



8-26 



