Re: [Paddlewise] Tides and Current Speed

    Why not consult a hydrologist or hydraulics engineer or even a 
physicist?
    There's probably one in your neighborhood. If all else fails, call 
Oprah.

    Brad


> Craig Jungers wrote:
>
>> Well I'll go along with that. But I can think of a couple of ways to
>> actually measure current speed to see how fast the current actually ramps
>> up. I'm pretty sure that in constricted channels it gets to very nearly 
>> full
>> speed quickly... nothing like the nice smooth curves you see in tidal 
>> tables
>> or on the Internet web pages.
>>
>> I would have thought some geophysical science post-grad would be all gung 
>> ho
>> about doing this sort of thing.
>
   Dave Kruger wrote:

> I believe NOAA set up current meters in selected channels and actually did 
> the measurements for a few, generated the algorithm which seemed to fit 
> best, and then extrapolated that to other areas where no actual 
> measurements were taken and called it good. Given other variables which 
> changed from day to day would throw the models off anyway, it probably was 
> not going to improve things much if they set up current meters in every 
> tidal channel.
>
> To be sure, the smooth curves are idealized results.  But, the shape of 
> the curves is not the same for all channels; some are asymmetric; others 
> are symmetric. 
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