Griffiths and Veronis (1997) reported observations of the effect of a sloping boundary on the circulation in a sliced-cylinder model of wind-driven circulation in which the flow is driven by the relative rotation of the top lid. A summary of observations for the nearly linear case is given here along with the linear analysis based on the theory of a rotating homogeneous fluid. Good agreement between the two is obtained, and the (straightforward) physics of the system is described.
Griffiths, Ross W., and George Veronis. 1998. "Linear theory of the effect of a sloping boundary on circulation in a homogeneous laboratory model." Journal of Marine Research 56, (1). https://elischolar.library.yale.edu/journal_of_marine_research/2263