Quote:
Originally Posted by rditto48801
wait, a tsunami?
It skipped my mind earlier that tsunami is the word for giant waves that only are 'visible' close to shore.
Also, aren't tsunamis caused by tremors/quakes on the ocean floor (or islands or on shore), and not by wind/storm activity?
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A Wave is energy, either transferred to the sea via wind, or earthquakes.
A tsunami's wave energy is
Longitudinal - in the direction of travel, hence it literally has no vertical wave component. When it gets to shallow water, this impulse(s) of energy have nowhere to go except vertical, making very large waves.
Wind storm waves are
Transverse waves at 90 degrees (vertical) to the direction of travel. As the waves pass over you (sub) you feel the changes in pressure energy, which causes the rolling depending on your course-vs-wave direction. The deeper you are lessens the pressure variations, thus the rolling effects.
a simple explanation of wave types
