Sediment transport induced by tidal bores. An estimation from suspended matter measurements in the Sée River (Mont-Saint-Michel Bay, northwestern France)

Researchers have quantified the significant sediment transport induced by tidal bores, reaching up to 40 kg/m²/s, in the macrotidal estuary of Mont-Saint-Michel Bay. This finding challenges previous assumptions about the difficulty of measuring suspended sediment concentrations (SSC) due to high turbulence and large SSC values. The study employed both direct and indirect (optical) methods for SSC measurements, calibrated in laboratory settings to ensure consistency and accuracy. By coupling these measurements with ADCP velocity data, scientists calculated instantaneous sediment transport associated with tidal bore passages, providing critical insights into the dynamics of sediment movement in such environments.

Furgerot, L., Mouazé, D., Tessier, B., Perez, L., Haquin, S., Weill, P., & Crave, A. (2016). Sediment transport induced by tidal bores. An estimation from suspended matter measurements in the Sée River (Mont-Saint-Michel Bay, northwestern France). Comptes Rendus. Géoscience, 348(6), 432–441. https://doi.org/10.1016/j.crte.2015.09.004