[Acoustics] Sontek SW for canal flows

[James B DeRose]

Hi Tracy,

I'm not familiar with the SWs, so I'm a little curious.  How do you know 
for sure that the depth integrated velocity obtained from the SW is the 
same as the mean channel velocity?  Our experience has shown (Gartner, 
others...) that even in a concreted channel velocity is fastest near 
center and slows down when you get closer to the sides.  Does the SW 
somehow take this into account when it calculates a channel mean velocity? 
 We treat all our upward ADCPs as an "index" velocity for this very 
reason. 

Thanks,

JB

James B. DeRose
Electronic Technician 
US Geological Survey
Placer Hall 6000 J Street
Sacramento, CA 95189
Ph (916) 278-3056
Cel (916) 826-4518
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