Frequency-Direction Spectral Plots: Event U 



0100. 6 Mar 90 

 Hmo «= 0.77 m 



0700, 6 Mar 90 

 Hmo — 79 m 



1300, 6 Mar 90 

 Hmo — 0.79 rm 



1900, 6 Mar 90 

 Hmo — 1.41 m 



6 Idea 



2200, 6 Mar 90 0100, 7 Mar 90 



Hmo = 2.50 m Hmo = 2.96 m 



0400, 7 Mar 90 

 Hmo = 2.92 m 



0700, 7 Mar 90 

 Hmo = 2.88 m 



1000, 7 Mar 90 

 Hmo — 2.71 m 



1300, 7 Mar 90 

 Hmo — 2.46 m 



1900, 7 Mar 90 

 Hmo — 1.99 m 



2200, 7 Mar 90 

 Hmo *■ 1.95 m 



A74 



Appendix A Event Time Series and Spectral Sequences 



