I am facing a problem with some tridimensional dunes and I wanted to ask you a suggestion.

In your opinion, what is the best way to characterize a 3D geometry of dunes. The available data are longitudinal scans at 3 different transversal coordinate and DEM. I used the zero-crossing method to estimate the characteristi dunes height and wavelength from the bed profile scans. But how can I characterised the trimensionality? I guess from the DEM? how can I characterised the characteristic dune height and wavelength in the transversal direction?

Thanks