RT journal article
T1 The fate of Guadalquivir River discharges in the coastal strip of the Gulf of Cadiz. A study based on the linking of watershed catchment and hydrodynamic models.
A1 Gómiz Pascual, Juan Jesús
A1 Bolado Penagos, Marina
A1 González, Carlos José
A1 Vázquez López-Escobar, Águeda
A1 Buonocore, Cira
A1 Romero Cózar, Jeanette
A1 Pérez Cayeiro, María Luisa
A1 Izquierdo González, Alfredo
A1 Álvarez Esteban, Óscar
A1 Mañanes Salinas, Rafael
A1 Bruno Mejías, Miguel
A2 Física Aplicada
A2 HistoriaGeografía y Filosofía
K1 Hydrological and hydrodynamic models
K1 Suspended solid transport
K1 River discharges
K1 Guadalquivir
K1 Gulf of Cadiz
K1 Strait of Gibraltar
AB A catchmentmodel for river basins and a hydrodynamicmodelwere combined in order to simulate the spreading ofthe turbidity plume produced by sediment discharges from the Guadalquivir River basin within the Gulf of Cádizunder different meteorological conditions. The current fields provided by the hydrodynamic model and atransport-diffusion scheme based on tracking virtual particles tracking released at the river mouth have enabledus to simulate turbidity plumes that show great similarity with the plumes observed in satellite images. The mostrelevant results of the study show that in the absence of winds, the plume tends to spread very slowly, graduallyprogressing northwards; this is because of the symmetry between the filling and draining flows at the mouth ofthe Guadalquivir and low intensity of the tidal currents beyond the mouth. In addition, the transport of the plumetowards the Strait of Gibraltar requires wind conditions with a northerly, north-westerly or westerly component.Westwards transport, however, requires winds with an easterly, southerly, or south-easterly component. The periodsof heaviest rainfall in the Guadalquivir River basin coincide with winds mainly from the west; therefore, thetimes ofmaximum discharge at the mouth of the river occurwhen there are wind conditions that favour the transportof the matter suspended in the plume, southwards along the coast, towards the Strait of Gibraltar and theAlboran Sea. Linking the watershed catchment and hydrodynamic models has proved its suitability to predict theevolution and reaching of the sediment plumes fromthe Guadalquivir River discharges and the experience encouragesthe use of that methodology to be applied in a future prediction systemfor the creation and evolution of thosesediment plumes.
PB ELSEVIER
SN 1879-1026
YR 2021
FD 2021-07
LK http://hdl.handle.net/10498/25195
UL http://hdl.handle.net/10498/25195
LA eng
NO We would like to thank the Regional Government of Andalusia ( P11-RNM-7722 project), the Spanish Government (TRUCO project RTI2018-100865-B-C22 ), the SUDOE INTERREG AGUAMOD and OCASO projects for supporting this work financially. We are also grateful to NASA for distributing the MODIS data used in this study, and to the AERONET project for the MODIS AQUA RGB True Color Images, especially those from the Malaga-San Jose and Huelva stations.
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026