FRF BATHYMETRY 14 FEB 85 



CERC PIER 



Figure 44. Permanent trough under the FRF pier (14 February 1985) 



contour diagrams of the bottom topography and time sequences of bottom eleva- 

 tions at selected locations along the pier. 



Bottom Elevation Histories 



89. Useful for interpretation of the wave data from Gages 645 and 625 

 located under the pier, a history of the bottom elevations is presented at 

 their respective pier stations, sta 7+80 (238 m) and sta 19+00 (579 m) . 

 Histories at intermediate locations, 323 and 433 m, are also included (Fig- 

 ure 45) . Variations of elevation under the pier are caused by natural pro- 

 cesses (such as profile changes caused by bar movement) as well as scour 



66 



