This paper examines the response of the linear inviscid shallow water equations on a meridionally infinite but zonally bounded equatorial β-plane to periodic zonal forcings at a low frequency ω….
Cane, Mark A., and E. S. Sarachik. 1981. "The response of a linear baroclinic equatorial ocean to periodic forcing." Journal of Marine Research 39, (4). https://elischolar.library.yale.edu/journal_of_marine_research/1564