RT Journal Article
T1 Calculated Potential Bedload Versus Real Transported Sands along the Guadiana River Estuary (Spain–Portugal)
A1 Morales González, Juan Antonio
A1 Lozano Guerra-Librero, Claudio
A1 Sedrati, Mouncef
AB The Guadiana estuary is a coastal system located in the southwest of the Iberian Peninsulaand is the natural border between Portugal and Spain. It is a rock-bounded estuary which extendsalong more than 40 km and is characterized by a semidiurnal mesotidal regime. This paper representsan approach to the bedload transport across two flow sections located in the fluvial and marinedomains. In the fluvial profile, the most frequent bedform is the plane bed. In the marine area the bedof the deep channel is composed of well-sorted sand, while a lateral bar displays partially cohesivesediments with dominant fine sands in a matrix of clayey silts. Data were acquired during springand neap tides. Near-bottom water velocities were registered by an acoustic Doppler current profiler(ADCP). Density and bed rugosity were determined in sediment samples. These data were employedusing Bagnold’s equation (1963) to quantify the potential bedload (Qb). Further, real bedload values(Sb) were obtained by using Poliako  traps. The comparison of the results of Qb under both ebb andflood conditions demonstrated a clear river-to-sea net transport in both sectors. The values of Sb werelower than those of Qb in every condition. The sand input across the fluvial estuary cannot supplythe potential bedload in the lower domain of the channel, thereby causing a deficit that explains thislack of agreement between potential and real transport.
PB MDPI
SN 2077-1312
YR 2019
FD 2019-11
LK http://hdl.handle.net/10272/17695
UL http://hdl.handle.net/10272/17695
LA eng
NO Morales  González, J. A., Lozano Guerra-Librero, C.,  Sedrati, M. (2019). Calculated Potential Bedload Versus Real Transported Sands along the Guadiana River Estuary (Spain–Portugal). Journal of Marine Science and Engineering, 7(11), 393. DOI: https://doi.org/10.3390/jmse7110393
NO This investigation was carried out with a grant from the Andalousian Gouvernement (AndalousianPlan I+D+i). Excelence Project RNM-03093.
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026