Brunt–Väisälä frequency

The Brunt - Väisälä frequency, or buoyancy frequency is the frequency with which oscillates in the dynamics of atmospheric processes and in oceanography, a vertically deflected mass element in a static system. It is in the atmosphere

• The potential temperature, i.e. the temperature that would occupy for transfer to a fixed standard pressure level (1000 hPa ) through an adiabatic change of state, the system is,
• Is the acceleration of gravity and
• The height.

In the water where the density is not directly proportional to the temperature varies, applies

• The density.

Context

The Brunt - Väisälä frequency features dynamic processes in a statically stable stratified medium (air, water).

In a statically unstable medium vertically deflected mass elements do not oscillate, but continue to move in the direction of the original displacement.

• Oceanography