Re: [Paddlewise] Seiche

wanewman_at_uswest.net wrote:
> 
> Can't help you with the article but it looks like the news hounds get it wrong
> again when it comes to science reporting.  While it may be rare to have a Seiche
> as large as the one they reported it is not at all a rare occurance to have
> Seiche activity on the Great Lakes.  On any given day you will be able to
> measure cycles of rising and falling water level over a period of a few hours to
> half a day or so.  In a Limnology class we took a meter stick down to a nice
> sheltered area of a Marina, tied it to a dock post and watched for the cycles
> (very high tech!).  Every so many hours the water level would rise and fall
> about six inches.
>

I learned about this in a land surveying course in university.  Occasionally a 
surveyor will try to cheat and, rather than carry a level around the shore 
of a lake, take the level of the water at one end and assume it's the same at
the other.  This can lead to interesting errors.

When folks ask me if there are tides on the Great Lakes, I say yes, but they 
are much amaller than wind induced shifts.

Mike
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