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re: is it true that the river will wash away sediment when it....
Posted on 5/22/11 at 10:13 pm to shaunmccarron29
Posted on 5/22/11 at 10:13 pm to shaunmccarron29
quote:
build a sand castle with a big wall around it, during low tide, then watch it disappear.. Every wave (surge) that comes in gradually pulls the bottom layers of the castles wall out. This is the same principal as how a plane flies.
Now I'm a learned man but not learned (to a professional level) in the sciences and maths. But what you seem to describe is erosion which does not explain how a plane flies.
1
Posted on 5/23/11 at 9:10 am to bbrownso
It was actually kind of close to right. In addition to saturation and scouring, if the water levels drop too fast and the speed of the water decreases quickly the pressure onthe levees from the river will increase quickly also. As velocity of a fluid increases, pressure decreases and vice versa. It seems like the most dangerous scenario would be a quick decrease in the water level followed by another increase in the level.
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