TIME SERIES - GAGE 2329 



10 OCT 1986 400 EST 



LONGSHORE CURRENT 



Figure 7. Longshore current showing rapid spin-up of shear waves. The time series was 

 low-pass filtered, with a cutoff frequency of 0.04 Hz, to remove currents at 

 incident band frequencies 



Figure 8. Schematic of two interacting wave trains creating longshore 

 variations in energy as a proposed mechanism for generating 

 periodic rip currents 



Chapter 2 Infragravity Wave Dynamics 



13 



