Influences of catchment and river channel characteristics on the magnitude and dynamics of storage and re-suspension of fine sediments in river beds
Harrington, Joseph R.
MetadataShow full item record
Fine particles or sediments are one of the important variables that should be considered for the proper management of water quality and aquatic ecosystems. In the present study, the effect of catchment characteristics on the performance of an already developed model for the estimation of fine sediments dynamics between the water column and sediment bed was tested, using 13 catchments distributed worldwide. The model was calibrated to determine two optimal model parameters. The first is the filtration parameter, which represents the filtration of fine sediments through pores of the stream bed during the recession period of a flood event. The second parameter is the bed erosion parameter that represents the active layer, directly related to the re-suspension of fine sediments during a flood event. A dependency of the filtration parameter with the catchment area was observed in catchments smaller than ~100 km2, whereas no particular relationship was observed for larger catchments (>100 km2). In contrast, the bed erosion parameter does not show a noticeable dependency with the area or other environmental characteristics. The model estimated the mass of fine sediments released from the sediment bed to the water column during flood events in the 13 catchments within ~23% bias.
Is part ofWater, 2019, vol. 11, núm. 5, 878
European research projects
Showing items related by title, author, creator and subject.
Suspended sediment dynamics in a large regulated river over a 10-year period (the lower Ebro, NE Iberian Peninsula) Batalla, Ramon J.; Vericat Querol, Damià; López Tarazón, José Andrés; Tena, Alvaro (Elsevier, 2011)This paper presents a comprehensive assessment of the suspended sediment load for the period (1998–2008) in the lower river Ebro (NE Iberian Peninsula), one of the most regulated large rivers in Europe. Sediment load ...
Effects of flow regulation on river bed dynamics and invertebrate communities in a Mediterranean river Lobera Galán, Gemma; Muñoz Gràcia, Isabel; López Tarazón, José Andrés; Vericat Querol, Damià; Batalla, Ramon J. (Springer International Publishing, 2016)Mediterranean rivers are hotspots for biodiversity, and riverine species are adapted to regular physical perturbations that affect channel morphology during flashy rainfall-runoff events. Dams alter flow regimes, ...
Dynamics of suspended sediment borne persistent organic pollutants in a large regulated Mediterranean river (Ebro, NE Spain) Quesada, S.; Tena Tarruella, Anna; Guillén, D.; Ginebreda, A.; Vericat Querol, Damià; Martínez, E.; Navarro Ortega, A.; Batalla, Ramon J.; Barceló, Damià (Elsevier, 2013)Mediterranean rivers are characterized by highly variable hydrological regimes that are strongly dependent on the seasonal rainfall. Sediment transport is closely related to the occurrence of flash-floods capable to deliver ...