%0 conference lecture %@ %A Riethmueller, R., Hakvoort, H., Heineke, M., Heymann, K., Kuehl, H., Witte, G. %D 1998 %J Geological Society, Special Publications, Conference on Sedimentary Processes in the Intertidal Zone %P 283-293 %T Relating erosion shear stress to tidal flat surface colour %U %X