Neutral mode

From Glossary of Meteorology
(Redirected from Decaying mode)



neutral mode

(Also called neutral wave.) In hydrodynamic instability theory, a wave solution the amplitude of which does not change with time; it neither grows nor decays.

In contrast, the amplitude of a growing mode (or wave) increases with time; that of a decaying mode (or wave) decreases with time. The latter two are unstable waves.


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