

Table 3. 



Resonant edge 



wave parameters. 



N l 



N 2 



u l 



u>2 



h 



c 



K 











0.5 



0.5 



0.25 



1.68 x 10" 2 



13 







1 



0.366 



0.634 



0.134 



4.40 x 10" 3 



51 







2 



0.309 



0.691 



0.095 



2.28 x 10~ 3 



100 







3 



0.274 



0.726 



0.075 



1.44 x 10" 3 



160 



1 



1 



0.5 



0.5 



0.083 



1.56 x 10" 3 



180 



1 



2 



0.427 



0.563 



0.063 



0.88 x 10" 3 



330 



1 



3 



0.396 



0.604 



0.052 



0.56 x 1CT 3 



520 



2 



2 



0.5 



0.5 



0.05 



0.52 x 10" 3 



610 



2 



3 



0.458 



0.542 



0.041 



0.36 x 10' 3 



810 



3 



3 



0.5 



0.5 



0.035 



0.28 x 10 -3 



1,200 



j = (0.5 - p) w 



(216) 



where p is a variable given as < p < 0.5, and the edge wave with the 

 higher frequency by 



a) = (0.5 + p) oj 



(217) 



the drift speed, Cj, of the nodes and antinodes of the standing wave 

 is given by 



c d= P k 



(218) 



y 



where oj is the radian frequency of the incident wave and ky the wave 

 number, 2tt/Lj,, of the edge wave. 



Munk, Snodgrass, and Gilbert (1964) note that because of coriolis 

 splitting, in general, the frequency of edge waves moving left (looking 

 seaward) exceeds the frequency of waves moving to the right in the 

 Northern Hemisphere. In the Southern Hemisphere the opposite would be 

 true. Therefore, for a uniform straight coastline, the higher frequency 

 edge waves would display a preference for moving in a particular direction. 

 Guza and Davis (1974) obtained values for resonant edge wave parameters . 

 Corrected values were presented by Guza and Bowen (1975) , and values of 

 the parameters are given in Table 3 for various modes of resonance. The 

 parameters shown in Table 3 are in dimensionless form. The parameter K 

 defines a critical value of incident wave amplitude by 



K = 



8c 2 



(219) 



103 



