期刊
COMPTES RENDUS GEOSCIENCE
卷 348, 期 6, 页码 432-441出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crte.2015.09.004
关键词
Tidal bore; Flow velocity; Suspended sediment concentration (SSC); Laboratory calibration; Direct sampling; ASM rod; Sediment flux; Mont-Saint-Michel Bay
Tidal bores are believed to induce significant sediment transport in macrotidal estuaries. However, due to high turbulence and very large suspended sediment concentration (SSC), the measurement of sediment transport induced by a tidal bore is actually a technical challenge. Consequently, very few quantitative data have been published so far. This paper presents SSC measurements performed in the See River estuary (Mont-Saint-Michel Bay, northwestern France) during the tidal bore passage with direct and indirect (optical) methods. Both methods are calibrated in laboratory in order to verify the consistency of measurements, to calculate the uncertainties, and to correct the raw data. The SSC measurements coupled with ADCP velocity data are used to calculate the instantaneous sediment transport (q(s)) associated with the tidal bore passage (up to 40 kg/m(2)/s). (C) 2015 Academie des sciences. Published by Elsevier Masson SAS.
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