Factors controlling suspended sediment yield during runoff events in small headwater catchments of the Basque Country

Zabaleta, Ane; Martinez, Miren Itsaso; Uriarte, Jesús A.; Antigüedad, Iñaki

doi:10.1016/j.catena.2006.06.007

Cited by 131 publications

(118 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These six months were selected for two reasons: firstly to filter smaller events from the record for analysis purposes and secondly to limit analysis of events with excessive durations, particularly during the winter. Similar approaches, for example, have been adopted by others [7,8].…”

Section: Methodsmentioning

confidence: 96%

The influence of storm based events on the suspended sediment flux in a small scale river catchment in Ireland

Harrington¹,

Harrington²

2012

Monitoring, Stimulation, Prevention and Remediation of Dense and Debris Flows IV

View full text Add to dashboard Cite

Fine sediment plays a key role in the transport of contaminants in rivers and the quantification of suspended sediment flux is important to understanding and managing river catchments in the context of the EU Water Framework Directive (2000/60/EC). Recent European studies identified Ireland as having a paucity of sediment and sediment associated pollutant concentration and flux data. This paper presents the results of a continuous monitoring programme on a small scale catchment (105 km 2 ) in Ireland, the River Owenabue, which is located in the South Western River Basin District. Analysis was undertaken to determine event based fluxes and their contribution to the annual flux.The continuous monitoring programme commenced in September 2009. Analysis shows that turbidity is an accurate surrogate for suspended sediment concentration for this river and when coupled to river flow data provides estimates of the suspended sediment flux. The objective of this paper is to quantify the suspended sediment flux of a small Irish River, and to analyse the dynamic delivery sequence of storm based events. The variation of the suspended sediment flux at different temporal scales is investigated and found to be significant.The annual suspended sediment flux was found to be 2635 tonnes (t) which equates to a suspended sediment yield of 25.6 t km -2 year -1 . The flux analysis reveals that 85% of the total annual flux is transported over 10% of the year and 69% of the flux over 5% of the year. return period flow rate of approximately 10 years, the flux is estimated at 38% of the annual flux. Hysteresis is observed and analysed for the identified events and it is found that clockwise hysteric loop are most common implying that suspended sediment transport is most commonly limited by sediment supply.

show abstract

Section: Methodsmentioning

confidence: 96%

The influence of storm based events on the suspended sediment flux in a small scale river catchment in Ireland

Harrington¹,

Harrington²

2012

Monitoring, Stimulation, Prevention and Remediation of Dense and Debris Flows IV

View full text Add to dashboard Cite

show abstract

“…The characteristics of suspended sediment concentration and yield at the event scale have been widely analyzed in various environments worldwide [31][32][33]. Floods are relevant for most of the suspended sediment load [34].…”

Section: Contribution Of Large Floodsmentioning

confidence: 99%

Quantifying the Effects of Near-Bed Concentration on the Sediment Flux after the Operation of the Three Gorges Dam, Yangtze River

2017

Water

View full text Add to dashboard Cite

Abstract:The regime of sediment transport in the Jingjiang Reach has significantly changed from quasi-equilibrium to sub-saturation since the impoundment of the Three Gorges Dam (TGD), and vertical profiles of suspended sediment concentration (SSC) have changed accordingly. Vertical profiles of SSC data measured at three hydrological stations in the Jingjiang Reach (Zhicheng, Shaishi, and Jianli), before and after the impoundment of TGD, were collected and analyzed. Analytic results indicate a remarkably large concentration in the near-bed zone (within 10% of water depth from the river-bed) in a sub-saturated channel. The maximum measured concentration was up to 15 times the vertical average concentration, while the ratio in quasi-equilibrium channel was less than four times that. Concentrations normalized with reference concentration at the same height, and may decrease with increasing values of suspension index (settling velocity over shear velocity). In addition, concentration near the water surface may be larger than concentration in the near-bed region when the suspension index is smaller than 0.01. Sediment flux transported in the near-bed zone may be up to 35% of the total sediment flux in unsaturated flows. The relationship between deviations of estimating sediment flux when ignoring the near-bed concentration and discharge in flood season and non-flood season are different in unsaturated and quasi-equilibrium channels. Analysis indicates that, in the quasi-equilibrium channel, more attention should be paid to near-bed concentration during non-flood season, the same as measurements during flood season with larger discharge.

show abstract

“…Moreover, Oiartzun and Oria catchments hold higher exportation rates, with 130 and 260 t km x2 y x1 , respectively. Zabaleta et al (2007), who analyzed the hydro-sediment response in small basins of Gipuzkoa, estimates sediment exportation rates of 45, 35 and 15 t km x2 y x1 , respectively for An˜arbe (48 km 2 ), Aixola (4.8 km 2 ) and Barrendiola (3 km 2 ) watersheds. This author also notes that it is difficult to make a comparison between the results obtained for different basins, as there are significant differences between the methodologies used by the authors and the watershed characteristics (geology, topography, precipitation, land use, among other).…”

Section: Ssc Simulation and Yieldmentioning

confidence: 99%

“…Authors as Zabaleta et al (2007), Montoya-Armenta et al (2013) have quantified the sediment load in two small watersheds in Basque Country and concluded that an increase in sediment transportation occurs during flood events. It is a very important challenge to quantify the amounts of sediments transported from land to the sea and to identity the erosion zones in order to improve the measurements that regulate pollutants that go from land to the river.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of hydrology, suspended sediment and Nickel loads in a small watershed in Basque Country (Northern Spain) using eco-hydrological SWAT model

Peraza-Castro

Ruiz‐Romera

Armenta

et al. 2015

Ann. Limnol. - Int. J. Lim.

View full text Add to dashboard Cite

-Suspended sediment transportation and associated pollutants from catchment to stream networks are responsible for aquatic habitat degradation, reservoir sedimentation and the transportation of sediment bound pollutants. Quantifying suspended sediment loads from lands to watercourses is essential in controlling soil erosion and in implementing appropriate mitigation practices to reduce stream sediment and associated pollutant loads, and hence improve surface water quality downstream.The main objective of this study is to evaluate the temporal variability of hydrology, sediment and nickel loads using Soil and Water Assessment Tool in Oka watershed located in north Spain. Model simulation was completed using 11 years historical records (2001-2009 for validation and 2009-2012 for calibration) of streamflow and suspended sediment concentration (SSC). Thestreamflow, SSC and sediment load estimated from the model were compared with observed data using statistical parameters, which indicates a successful simulation. The annual production of simulated sediments shows variability between 662 and 1515 t, with a mean specific yield of 33 t km x2 y x1 . The annual load of nickel simulated ranged from 32 to 72 kg, representing a mean specific of 1.63 kg km x2 year x1 . The information obtained from this research is of interest to understand long term interannual variability of suspended sediment and nickel yield.

show abstract

Factors controlling suspended sediment yield during runoff events in small headwater catchments of the Basque Country

Cited by 131 publications

References 23 publications

The influence of storm based events on the suspended sediment flux in a small scale river catchment in Ireland

The influence of storm based events on the suspended sediment flux in a small scale river catchment in Ireland

Quantifying the Effects of Near-Bed Concentration on the Sediment Flux after the Operation of the Three Gorges Dam, Yangtze River

Evaluation of hydrology, suspended sediment and Nickel loads in a small watershed in Basque Country (Northern Spain) using eco-hydrological SWAT model

Contact Info

Product

Resources

About