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Re: double tide cause


That on a real Earth, there are not tidy meridional waves sweeping
the Earth but rather, a multitude of effects that disturb the simplicity
of the basic model. That when the modest ocean tidal range hits the shelving
coasts, wave heights can multiply. That enclosed basins can show circulating
swirls. That's the way it is: messy!

Yes, messy indeed. There are regions where high water progression is
eastward!!! On the West Coast it is southward. In the Black Sea it is
circular!!! Tidal motion is a resonant phenomenon in a myriad of driven
damped harmonic oscillators -- ie bodies and sub-bodies of water. And
there is no reason that the height or time of high water anywhere should be
as it is anywhere else. Or that Spring or Neap Tides should occur at full
moon -- They usually don't. Or that there should be "tidal bulges" sweeping
the Earth -- There are not.


Jim Green
mailto:JMGreen@sisna.com
http://users.sisna.com/jmgreen