What factors are needed in wind wave development? What occurs after these waves develop? What will be an ideal response?
ANS:Answer
should include:
? Wind strength is the first factor that is needed to generate wind waves. The wind must be
moving at a faster speed than the wave crests. This allows energy to transfer from the
atmosphere to the ocean surface.
? Wind needs to blow for a certain duration to affect wind wave growth. High winds over
short periods of time do not produce large waves.
? Lastly, there needs to be an uninterrupted distance for the wind to blow across without a
significant change in direction. This area is called a fetch.
? Once waves are generated, they begin the process of dispersion. The waves begin to
separate into groups with similar wavelengths.
? The wave groups, or wave trains, begin to move. These trains move at half the speed of
individual waves in the train.
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