Comparison between rainfall simulator erosion and observed reservoir sedimentation in an erosion-sensitive semiarid catchment

Hamed, Yasser; Albergel, Jean; Pépin, Yannick; Asseline, Jean; Nasri, Slah; Zante, Patrick; Berndtsson, Ronny; El-Niazy, Mohamed; Balah, Mohamed

doi:10.1016/s0341-8162(02)00089-9

Cited by 61 publications

(20 citation statements)

References 13 publications

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“…Although natural rainfall intensities at the study site are typically low (less than 20 mm•h -1 ), the use of higher rainfall intensities were justified because infrequent heavy rains do occur at the study site (Mzezewa et al, 2010). Selection of rainfall intensities so as to cover the full possible range is especially important in semiarid areas where rainfall often occurs as short high-intensive storms (Hamed et al, 2002). The time till the first runoff occurred was recorded and samples were taken.…”

Section: Rainfall Simulation Experimentsmentioning

confidence: 99%

Effects of tillage on runoff from a bare clayey soil on a semi-arid ecotope in the Limpopo Province of South Africa

Mzezewa¹,

Rensburg²

2011

WSA

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Runoff constitutes one of the major water losses from agricultural fields in semi-arid areas. However, by adopting appropriate soil management practices, the runoff can be harnessed for improving crop yields. The main objective of this study was to quantify rainfall-runoff relationships under in-field rainwater harvesting (IRWH) using simulated rainfall, and to compare these results to those obtained with annually tilled conventional tillage (CON) (control). IRWH is a special type of no-till (NT) crop production practice that promotes runoff from a crusted runoff strip into basins where the water infiltrates beyond evaporation but is available for crop use. Runoff was related to time to runoff, total runoff, final runoff rate and runoff coefficient. This experiment demonstrated that by adopting IRWH production technique smallholder farmers could harness an additional 45.54 m 3•ha -1 of water compared to the CON system. The extra water harvested could meet about 1% of maize water requirements.

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Section: Rainfall Simulation Experimentsmentioning

confidence: 99%

Effects of tillage on runoff from a bare clayey soil on a semi-arid ecotope in the Limpopo Province of South Africa

Mzezewa¹,

Rensburg²

2011

WSA

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“…Neave and Rayburg 2007), to measure the risk of soil erosion (Hamed et al 2002;Martin et al 2010;Roose et al 2012), and to measure runoff (e.g. Perez-Latorre et al 2010;Martinez-Murillo et al 2013).…”

Section: Rainfall Simulationmentioning

confidence: 99%

Hydraulic Characterization of Porous Materials Using a Rainfall Simulator to Model Flows in Natural and Artificial Non-Saturated Materials

Masson

Lefer

Boulemia

et al. 2017

JWMM

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Cumulative runoff curves are created by applying constant rainfall of known intensity using a rain simulator. These curves allow us to determine, with good accuracy, the initial loss, the initial time of runoff, and the constant loss. The approach is to model infiltration in an unsaturated medium using a draining reservoir paradigm. Simulated rainfall is applied to a typical soil considered to be composed of two superimposed layers of different permeabilities. This approach enables us to represent the drainage porosity as a function of the constant loss and the initial runoff time, which are measured during the rain simulation. Thus it is possible to calculate the infiltrated volumes, the initial runoff times, and the runoff volumes which are induced by rains of different intensities.Four case studies are used to illustrate the application of our approach.

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“…Meyer (1988) contended that simulated rainfall results only give relative, rather than absolute, erosion data, and that to correlate the simulation results to that of natural events, data from similar plots subject to long-term natural rainfall events must be available for comparison (Hamed et al 2002). Nonetheless, rainfall simulators in the field continue to be developed and used as few replacements are available for generating physical processbased erosion information.…”

Section: Rainfall Simulator Designsmentioning

confidence: 99%

California agriculture profitable and growing

Klonsky¹

2012

Calif Agr

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Rainfall simulators are often employed to measure erosion rates, in order to estimate stream loading of sediment and nutrients in California foothill watersheds. The rainfall simulator enables the precise application of artificial rain with controlled drop sizes, intensity and duration. In addition to rain factors such as drop energy and intensity, several soil-and cover-related factors affect erosion rates. While computational models have evolved to quantify erosion based on field measurements taken by rainfall simulators, there has not been a consensus on the methodology to be deployed, especially in forested and remote landscapes. In addition, it is challenging to apply study results from small plots to entire watersheds. To guide future fieldwork on sediment loading to water bodies, we review key concerns related to rainfall simulator studies.

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Comparison between rainfall simulator erosion and observed reservoir sedimentation in an erosion-sensitive semiarid catchment

Cited by 61 publications

References 13 publications

Effects of tillage on runoff from a bare clayey soil on a semi-arid ecotope in the Limpopo Province of South Africa

Effects of tillage on runoff from a bare clayey soil on a semi-arid ecotope in the Limpopo Province of South Africa

Hydraulic Characterization of Porous Materials Using a Rainfall Simulator to Model Flows in Natural and Artificial Non-Saturated Materials

California agriculture profitable and growing

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