As with aeolian and fluvial bedforms one would expect a combination of distinctive landforms and a range of intermediate morphologies. Rogen or ribbed moraine are also subglacial bedforms but are ...

in aeolian and fluvial geomorphology, that dunes and other bedforms are created through an instability generated by the interaction of the fluid flow with the underlying bed [e.g., Hersen et al., 2004 ...