“…This study focused on wide estuary sandridges (Type 2A), which are defined as "aligned with the flow", and "migrating away from their steeper face" (Dyer and Huntley, 1999). These sandridges have been the subject of extensive qualitative studies (Kraft et al, 1974;Ludwick, 1974Ludwick, , 1975Weil et al, 1974;Wright et al, 1975;Harris, 1988;Harris and Jones, 1988;Gomez and Perillo, 1992;Harris et al, 1992;Féniès and Tastet, 1998;Chaumillon et al, 2002) but few quantitative studies based upon processes (Dyer and Huntley, 1999). Moreover, these sandbanks are not only the result of sand transport under tide-driven currents but are also strongly influenced by wave effects (Dyer and Huntley, 1999) as in the case of some openshelf sandwaves (Le Bot and Trentesaux, 2004).…”