Cavviev 



implied cannot be estimated readily oy geometric optics methods at 

 such wave lengths and one must resort to numerical procedures. 

 The results of such studies are depicted in Figs. 2 and 3, taken from 

 Lauterbacher [ 2] . Figure 2 indicates the variations of intensity 

 with position on a given island and Fig. 3 indicates the extent of this 

 effect for different ratios of wave length to island size. 



CM 



COAST POSITION (MEASURED IN RADIANS AROUND ISLAND CENTRE) 



Fig. 2. Maximum wave amplification at coast (OAHU) 



