Evaluation of overland flow model for a hillslope using laboratory flume data

Arguelles, Anya Catherine C.; Jung, Myung-Pyo; Pak, Gijung; Aksoy, Hafzullah; Kavvas, M. L.; Yoon, Jaeyoung

doi:10.2166/wst.2013.341

Cited by 16 publications

(6 citation statements)

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“…Laboratory-scale RSs have been used to eliminate some of the disadvantages (for example difficulty with transportation, wet winter soil condition and the concern of growers about cultivation) of the small portable RSs. Laboratory RSs can be used to determine the impact of the soil surface characteristics such as micro-topography, surface roughness and soil chemistry on infiltration, soil aggregate stability, shear stress and erosion rates and to elucidate the processes involved (Meyer, 1965;Bubenzer & Meyer, 1965;Bryan & Shiu-Hung, 1981;Hignett et al, 1995;Bryan, 2000;Esteves et al, 2000;Lascelles et al, 2000;Regmi & Thompson, 2000;Blanquies et al, 2003;Guidry et al, 2006;Birt et al, 2007;Ran et al, 2012;Arguelles et al, 2013Arguelles et al, , 2014. Indoor RSs are also used for scaled experiments, for example, to study the impact of storm movement on overland flow (de Lima & Singh, 2003;de Lima et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

The Wageningen Rainfall Simulator: Set‐up and Calibration of an Indoor Nozzle‐Type Rainfall Simulator for Soil Erosion Studies

et al. 2015

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The set‐up and characterisation of an indoor nozzle‐type rainfall simulator (RS) at Wageningen University, the Netherlands, are presented. It is equipped with four Lechler nozzles (two nr. 460·788 and two nr. 461·008). The tilting irrigation plot is 6 m long and 2·5 m wide. An electrical pump supplies the constant flow during the experiments. The spatial distribution of the rainfall was measured with 60 rain gauges equally distributed on the experimental plot. Thies® Laser Precipitation Monitor was used to measure the size and falling velocity of the raindrops. Four different flow rates were applied (Q1–4). From the collected data, spatial rainfall intensity and spatial kinetic energy distribution maps were created; Christiansen uniformity coefficient was calculated for each flow rate. The results of the experiments revealed that the rainfall parameters (spatial rainfall intensity, kinetic energy, raindrop size distribution and fall velocity) in the RS are not homogeneous (Christiansen uniformity ranges from 68·5% to 83·2%). Accordingly, the whole plot can only be irrigated irregularly applying a wide range of intensities and rainfall energies. The RS offers a good opportunity to study great variety of process intensities such as splash erosion, runoff generation, soil aggregate stability, organic matter migration and scaled landscape development. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

The Wageningen Rainfall Simulator: Set‐up and Calibration of an Indoor Nozzle‐Type Rainfall Simulator for Soil Erosion Studies

et al. 2015

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“…Further details of the experimental setup, observations, measurements, and the use of experimental data can be obtained from a series of publications (Aksoy et al 2012Arguelles et al 2013Arguelles et al , 2014Mallari et al 2015aMallari et al , 2015b. …”

Section: Experimental Setup and Measurementsmentioning

confidence: 99%

Rainfall-Runoff Model Considering Microtopography Simulated in a Laboratory Erosion Flume

Aksoy

Gedikli

Ünal

et al. 2016

Water Resour Manage

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A comprehensive process-based rainfall-runoff model for simulating overland flow generated in rills and on interrill areas of a hillslope is evaluated using a laboratory experimental data set. For laboratory experiments, a rainfall simulator has been constructed together with a 6.50 m × 1.36 m erosion flume that can be given adjustable slopes changing between 5 % and 20 % in both longitudinal and lateral directions. The model is calibrated and validated using experimental data of simulated rainfall intensities between 45 and 105 mm/h. Results show that the model is capable of simulating the flow coming from the rill and interrill areas. It is found that most of the flow occurs in the form of rill flow. The hillslope-scale model can be used for better prediction of overland flow at the watershed-scale; it can also be used as a building block for an associated erosion and sediment transport model.

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“…For the overland flow model, the governing equations presented by Arguelles et al (2013) have been used in the experimental setup to compute for the interrill and rill flow. Equation 1 for the interrill flow and Eq.…”

Section: Overland Flowmentioning

confidence: 99%

“…This paper presents a physically based erosionsediment transport model presented by Aksoy and Kavvas (2001) coupled to one-dimensional (1-D) overland flow models developed for rill and interrill areas by Arguelles et al (2013). Modelling effort at such a fine spatial resolution considering the flow connection between interrill areas and rills is rarely verified due to difficulty involved with simulated rainfall experiments.…”

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confidence: 99%

Evaluation of an erosion-sediment transport model for a hillslope using laboratory flume data

et al. 2014

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Climate change can escalate rainfall intensity and cause further increase in sediment transport in arid lands which in turn can adversely affect water quality. Hence, there is a strong need to predict the fate of sediments in order to provide measures for sound erosion control and water quality management. The presence of microtopography on hillslopes influences processes of runoff generation and erosion, which should be taken into account to achieve more accurate modelling results. This study presents a physically based mathematical model for erosion and sediment transport coupled to one-dimensional overland flow equations that simulate rainfall-runoff generation on the rill and interrill areas of a bare hillslope. Modelling effort at such a fine resolution considering the flow connection between interrill areas and rills is rarely verified. The developed model was applied on a set of data gathered from an experimental setup where a 650 cm×136 cm erosion flume was pre-formed with a longitudinal rill and interrill having a plane geometry and was equipped with a rainfall simulator that reproduces natural rainfall characteristics. The flume can be given both longitudinal and lateral slope directions. For calibration and validation, the model was applied on the experimental results obtained from the setup of the flume having 5% lateral and 10% longitudinal slope directions under rainfall intensities of 105 and 45 mm/h, respectively. Calibration showed that the model was able to produce good results based on the R 2 (0.84) and NSE (0.80) values. The model performance was further tested through validation which also produced good statistics (R 2 =0.83, NSE=0.72). Results in terms of the sedigraphs, cumulative mass curves and performance statistics suggest that the model can be a useful and an important step towards verifying and improving mathematical models of erosion and sediment transport.

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Evaluation of overland flow model for a hillslope using laboratory flume data

Cited by 16 publications

References 0 publications

The Wageningen Rainfall Simulator: Set‐up and Calibration of an Indoor Nozzle‐Type Rainfall Simulator for Soil Erosion Studies

The Wageningen Rainfall Simulator: Set‐up and Calibration of an Indoor Nozzle‐Type Rainfall Simulator for Soil Erosion Studies

Rainfall-Runoff Model Considering Microtopography Simulated in a Laboratory Erosion Flume

Evaluation of an erosion-sediment transport model for a hillslope using laboratory flume data

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