CURRENT PROFILE STATIONS 



2200 — 



VJ 

 DC 

 g 2300 — 



I 



I 2400 — 



H 



0100 



*—- 1*. 



#^r^ 



c=4„ 



+--^ 



1 ( ^— -j -> 



u 



<"l ) 

 I-"* 



<• \ 



It 



< 1 



*0 



^ 



< I 



<— H 



dr-» 



<*•,> 







-C 



<•• 



1 







«T=I 





LEGEND 







VELOCITY 



SURFACE 



— » 



CLOCKWISE FLOW 



1.0 FT PER SECOND 



MIDDEPTH 

 BOTTOM 



<— 



COUNTERCLOCKWISE FLOW 



Figure 13. Simplified current vectors in Cerritos Channel 

 series at an expanded scale better illustrates the complexity of the flow in 

 the channel. 



105. A time series of the residuals at a 4-hr scale reveals higher fre- 

 quency oscillations occurring between gage stations. Both TGI - TG3 

 (Plate 33) and TG6 - TG3 (Plate 34) show an ascending series of roughly hourly 

 pulses moving from negative (outward flow) to near zero. The curves are simi- 

 lar but not identical. It is the differences between the signals of these two 

 gages, in fact, which illustrate the different hydraulic heads at each end of 

 the Cerritos Channel. (A more direct measurement of the head difference 



37 



