# Sverdrup wave

A Sverdrup wave is a wave in the ocean (especially infinite open ocean), which is affected by gravity and Earth's rotation (see Coriolis effect)

In shallow water gravity wave [or long wave (λ > 20 h)], (h stands for depth)only gravity effect the wave, the phase velocity of shallow water gravity wave (c) can be noted as

$c = (gh)^{1/2}$

and the group velocity (cg) of shallow water gravity wave can be noted as

$c_\mathrm{g}=(gh)^{1/2}$ i.e. $c=c_\mathrm{g}$

where g is gravity, λ is the wavelength and h is the total depth. But after concerning the inertial acceleration, the result would be different.[clarification needed]