We review the main results of our previous works, in which we have investigated thedevelopment of the Kelvin-Helmholtz (KH) instability in the transitional regime fromsub-magnetosonic to super-magnetosonic by varying the solar wind velocity, in conditionstypical of those observed at the Earth’s magnetopause flanks. In super-magnetosonicregimes, we show that the vortices produced by the development of the KH instability actas an obstacle in the plasma flow and may generate quasi-perpendicular magnetosonic shockstructures extending well outside the region of velocity shear.