Acoustic turbulence measurements of near-bed suspended sediment dynamics in highly turbid waters of a macrotidal estuary

► Near-bed turbulent fluxes were measured in the Gironde estuary by acoustic velocimetry. ► Acoustic velocities, turbulent shear and SSC were analyzed in the presence of fluid mud. ► Settling fluxes in quiescent waters and turbulent fluxes are compared in a wide range of SSC. ► Processes governing near-bed sediment fluxes under the effect of turbulence are discussed.