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::Also there are uses of the moon as a light source. In polar regions where the winter is without a visible sun, the moon provide light. Since everything is snow covered, the light can be quite bright, and when skiing (cross country, of course) it is often easier to just turn off your headlamp. --[[User:Tunheim|Tunheim]] 12:15, 7 February 2007 (UTC)
Internal ocean tides have amps 100x larger. They are probably much more important to biology. They do things such as sucking up deep cold water and letting it flood over a shelf. JEBAR pumping is similar but can have much longer upwelling periods. JEBAR and abyssal tides also pump deep water between basins that are otherwise isolated. Amps may exceed 500m.[[Special:Contributions/27.33.243.64|27.33.243.64]] ([[User talk:27.33.243.64|talk]]) 11:04, 14 December 2015 (UTC)
== Timing ==
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