Abstract
In this paper we discuss a theoretical model for both the free-surface and interfacial profiles of progressive nonlinear waves which result from introducing an obstacle of finite height, in the form of a ramp of gentle slope, attached to the bottom below the flow of a stratified, ideal, two-layer fluid.The derived equations are solved by using a nonlinear perturbation method.The effect of the height of the ramp, also some flow parameters, such as the ratios of depths and densities of the two fluids, have been studied and illustrated.