A simple analysis shows the analogy between Rossby waves and waves caused by irregularities in the depth of a homogeneous layer of fluid in a rotating system. The effect of bottom topography is shown to be very important in generating low-frequency waves and is more important than the β effect even for relatively small changes in the depth....
Veronis, George. 1966. "Rossby waves with bottom topography." Journal of Marine Research 24, (3). https://elischolar.library.yale.edu/journal_of_marine_research/1079