0.035 

 0.030 

 0.025 

 0.020 



0.015 - 1.5 



0.010 

 0.005 



I ° 



-0.005 



-0.010 

 -0015 

 -0.020 

 -0.025 

 -0.030 



Weir Elevation 



0.3 0.4 0.5 0.6 0.7 



Time (fraction of tidal cycle), t/T 



Figure 11. Phase lag between ocean tide and channel tide 



across a model weir jetty (weir at midtide level). 



CHANNEL SIDE 



OCEANSIDE 



Nappe- 



^^Wjjff 









- 



4 





} 



Scour 



Protection 



•V". 



^_s- Weir 





-rff^E 





fe&K 









Aerated Nappe During Floodflow 



Figure 12. Definition sketch of flow across 

 weir with aerated nappe. 



27 



