Time Trace of U-velocily @ BASS FRAME III (4 Hz) 



File 5AO6O8 



Broad Banded Random Wave 



400 600 



Lime (sec) 



Figure 9-11. Time trace of interpreted velocity data 



wave periods represented, four data files have wave periods of 3 sec and four 

 data files have wave periods of 4.5 sec. The wave heights of all eight data 

 files are statistically equal to 0.8 m. These files were selected because it is 

 necessary to compare spectrally similar waves for a better understanding of 

 how the different kinds of waves affect sediment resuspension. The velocity 

 files comprise one figure for each velocity component, for each of the four 

 BASS sensor arrays. Thus for each wave run there is a maximum of twelve 

 possible separate figures; only two of the eight wave run data files contained 

 this much uncompromised data. 



It can be seen from the concentration profiles exhibited in Figure 9-10 and 

 Figures 115-121 that profiles induced by waves of similar spectral width have 

 a similar shape. The broad-banded waves have the least total suspended 

 sediment mass within the profile, followed by the narrow-banded waves hav- 

 ing more total suspended sediment as evidenced by the kink in the L-shaped 

 profiles moving upwards and to the right. This effect is even more 

 pronounced on the monochromatic wave profiles. 



178 



Chapter 9 The Ohio State University Measurements 



