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<p>A  method  for  determining  the  net  non-tidal  flow  from  shipboard-mounted  acoustic  Doppler  current  profiler  (ADCP)  data  is  applied  to  observations  from  the  Gulf  of  the  Farallones  in  1991- 2.  Tidal  currents  represent  a  significant  portion  of  the  total  flow  in  the  region.  Both  the  tidal  and  non-tidal  current  fields  arc  characterized  by  spatial  and  temporal  variability  on  small  scales.  The  detiding  method  performs  a  least- squares  fit  to  determine  the  spatial  structure  of  both  the  amplitudes  of  the  major  tidal  constituents  and  the  magnitude  of  the  non-tidal  flow.  Synthetic  data  is  used  to  examine  the  requirements  and  constraints  in  choosing  the  best  polynomial  fitting  function  for  each  of  the  field's  components.  Arbitrarily  choosing  a  higher-order  polynomial  to  represent  these  fields  may  result  in  misrepresentation  of  the  true  flow.  Results  of  applying  this  technique  to  vertically-averaged  ADCP  data  from  five  seasonal  surveys  of  approximately  five-day  duration  are presented.
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<br>Subjects: NA</div>
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Steiner, Marc Thomas</div>
Internet Archive identifier