Deep-water waves

From Glossary of Meteorology
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deep-water wave

(Also called short wave, Stokesian wave.) A surface wave the length of which is less than twice the depth of the water.

When this relationship exists the following approximation is valid:
where c is the wave velocity, g is the acceleration of gravity, and L is the wave length. Thus, the velocity of deep-water waves is independent of the depth of the water.
See shallow-water wave.