Bedforms in a tidally modulated ridge and runnel shoreface (Berck-Plage; North France): implications for the geological recordRomain Vaucher, Bernard Pittet, Sophie Passot, Philippe Grandjean, Thomas Humbert et Pascal AllemandBSGF - Earth Sci. Bull., 189 1 (2018) 5DOI: https://doi.org/10.1051/bsgf/2018004