Equatorially trapped waves
From Glossary of Meteorology
equatorially trapped waves
Planetary waves propagating parallel to the equator, the meridional structures of which are trapped in the vicinity of the equator.
Included are equatorial Kelvin waves, Rossby waves, mixed Rossby–gravity waves, and gravity waves. The equatorial trapping is due to the variation of the Coriolis parameter and the fact that the parameter itself is zero at the equator.
See also equatorial waveguide.
See also equatorial waveguide.