A progressive wave of smaller amplitude, wave length, and duration than a long wave. It moves in the same direction as the basic current in which it is embedded and may induce upward vertical motion ahead of it. They are more numerous than long waves and often disappear with height in the atmosphere.
1. (Or minor wave.) With regard to atmospheric circulation progressive wave in the horizontal pattern of air motion with dimensions of cyclonic scale, as distinguished from a long wave. A short wave moves in the same direction as that of the prevailing basic current through the troposphere. The angular wavenumber of short waves ranges between eight and twenty. See cyclone wave. 2. A wave with a relatively short wavelength and period. For ocean wind waves, this usually means waves with periods shorter than about 60 s.
The collection of radio bands ranging from 2300kHz through to 27.41MHz.