Orlanski, I., 1976: The trapeze instability in an equatorial b-plane. Journal of the Atmospheric Sciences, 33 (5), 745-763.

Abstract: From preliminary reports of the GATE experiment it was concluded that there is some strong evidence that mesoscale waves with a periodicity close to 2 days exist in the equatorial regions. The dynamics of unstable internal gravity waves due to trapeze instability was discussed by means of a two-dimensional, b-plane numerical model. It was concluded that the trapeze instability may be the means by which the observed 2-day waves are excited.