Coriolis frequency

The Coriolis frequency ƒ, also called the Coriolis parameter or Coriolis coefficient,^[1] is equal to twice the rotation rate Ω of the Earth multiplied by the sine of the latitude $\varphi$ .

f=2\Omega \sin \varphi .\,

The rotation rate of the Earth (Ω = 7.2921 × 10⁻⁵ rad/s) can be calculated as 2π / T radians per second, where T is the rotation period of the Earth which is one sidereal day (23 h 56 min 4.1 s).^[2] In the midlatitudes, the typical value for $f$ is about 10⁻⁴ rad/s. Inertial oscillations on the surface of the Earth have this frequency. These oscillations are the result of the Coriolis effect.

^ Vallis, Geoffrey K. (2006). Atmospheric and oceanic fluid dynamics : fundamentals and large-scale circulation (Reprint. ed.). Cambridge: Cambridge University Press. ISBN 978-0-521-84969-2.
^ Goldstein, Herbert; Charles P. Poole; John L. Safko (1980). Classical Mechanics (2nd ed.). Addison Wesley. p. 178. ISBN 0-201-02918-9.

[1] Vallis, Geoffrey K. (2006). Atmospheric and oceanic fluid dynamics : fundamentals and large-scale circulation (Reprint. ed.). Cambridge: Cambridge University Press. ISBN 978-0-521-84969-2.

[2] Goldstein, Herbert; Charles P. Poole; John L. Safko (1980). Classical Mechanics (2nd ed.). Addison Wesley. p. 178. ISBN 0-201-02918-9.

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