Search results for " Sediment concentration"

showing 3 items of 3 documents

MANUAL SAMPLING AND TANK SIZE EFFECTS ON THE CALIBRATION CURVE OF PLOT SEDIMENT STORAGE TANKS

2004

In many experimental soil erosion plots, runoff is collected and carried by a conveyance system to a sequence of storage tanks. If the soil loss is measured by collecting, after mixing, samples of the stored suspension, then a calibration curve between the actual mean concentration (C) and the measured concentration (Cm) in the storage tank occurs. The aim of this article was to evaluate experimentally the factors affecting the relationship between C and Cm. For a sandy loam soil, the replicated measurements of Cm (20 samples) for two values of the actual concentration (C = 5 and 25 g/L) showed that the variability of the measurements of Cm is low and confirmed the reliability of a calibrat…

HydrologyCalibration curveLoamStorage tankCalibrationSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliEnvironmental scienceSampling (statistics)SedimentSurface runoffAgricultural and Biological Sciences (miscellaneous)Calibration Sediment concentration Soil erosion measurement Soil erosion plotWater levelTransactions of the ASAE
researchProduct

Scale effects on plot runoff and soil erosion in a mediterranean environment

2017

Explaining scale effects for runoff and erosion improves our understanding of hydrological and erosion processes. In this investigation, plot-scale effects on event runoff per unit area, Qe, sediment concentration, Ce, and soil loss per unit area, SLe, were checked at the Sparacia (Italy) site. Similar information on the scale effects was obtained with different dependent variables, i.e., individual values of Qe, Ce, and SLe for each plot or the mean of their replicated values, and scale indicators, i.e., plot length, l, or plot area, A. The most common result, occurring for 57 to 62% of the events depending on the considered variable, was the lack of any scale effect. When scale effects we…

Mediterranean climateHydrologyDependent variables Erosion process Mediterranean environment Rainfall characteristics Scale effects Scaling exponent. Sediment concentration Soil erosion0208 environmental biotechnologySoil ScienceEnvironmental scienceScale effects02 engineering and technologySurface runoffPlot (graphics)020801 environmental engineering
researchProduct

Predicting soil loss on moderate slopes using an empirical model for sediment concentration

2011

Summary The objective of this investigation was to estimate event soil loss per unit area from bare plots in central and southern Italy using an empirical model for sediment concentration. The analysis was developed using data collected on bare plots differing in length (11–44 m) and slope (10–26%) at three Italian stations (Masse, Umbria; Caratozzolo, Calabria; Sparacia, Sicily). At first, an analysis was carried out, using the experimental data collected at Sparacia, to establish a relationship between sediment concentration and hydrological variables, such as runoff, rainfall amount and single storm erosion index. Then, an empirical model to estimate plot soil loss as a function of rainf…

Slope lengthHydrologyComplete dataPlot soil lossStormSediment concentrationPlot soil lossSediment concentration Empirical modelSoil lossSediment concentrationEmpirical modelSoil waterErosionEnvironmental scienceSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliSurface runoffplot soil loss sediment concentration empirical modelWater Science and Technology
researchProduct