0.005 _ 



o 8 



Cyclic Alongshore Wavenumber (m 1 ) 



Log Variance Density (cm/sec)**2/Hz 



Figure 10. Edge waves in the presence of a longshore current exhibit 



asymmetry in the upstream and downstream k-f modal dispersion 

 curves. Mode 0, 1, and 2 numerical (measured cross-shore 

 current profile, asterisks) and analytical (no current, solid) 

 dispersion solutions are plotted (from Oltman-Shay and Howd 

 1993) 



Chapter 2 Infragravity Wave Dynamics 



23 



