Off-Topic: Wave dissipation

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	Name:	MartiniMan -
	Subject:	Wave dissipation
	Date:	5/8/2008 11:21:03 AM

Generally speaking the greater the energy the greater the amplitude. For a boat the energy is created by the initial displacement of the water by the hull (potential energy) and then the return of the displaced water to the hole created by the hull (kinetic energy). That's why slower boats create bigger waves, because of the greater displacement. As the wave propagates the same amount energy is spread out over a larger area so the amplitude will be reduced. There is some transfer of energy to friction but very little so for all practical purposes the amount of energy is that same until it hits something. Knocking off the cobwebs you will remember conservation of energy, neither created nor destroyed but just transferred. Clear as mud?