Search results for "Hydrologic response"

showing 4 items of 4 documents

Modeling the probability distribution of peak discharge for infiltrating hillslopes

2017

Hillslope response plays a fundamental role in the prediction of peak discharge at the basin outlet. The peak discharge for the critical duration of rainfall and its probability distribution are needed for designing urban infrastructure facilities. This study derives the probability distribution, denoted as GABS model, by coupling three models: (1) the Green-Ampt model for computing infiltration, (2) the kinematic wave model for computing discharge hydrograph from the hillslope, and (3) the intensity-duration-frequency (IDF) model for computing design rainfall intensity. The Hortonian mechanism for runoff generation is employed for computing the surface runoff hydrograph. Since the antecede…

peak discharge probability distributionGreen-Ampt modelhillslope scaleSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestalihydrologic responserunoff coefficientWater Science and Technology
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Effect of DEM resolution and threshold area on the hydrologic response at catchment scale

2008

DEM hydrologic responseDEMDEM; hydrologic responsehydrologic response
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Probability Distribution of Peak Discharge at the Hillslope Scale Generated by Hortonian Runoff

2016

In this work, the probability distribution of peak discharge at the hillslope bottom is determined hypothesizing a prevalent Hortonian mechanism of runoff production for a given rainfall duration. As is well known, the probability distribution of peak discharge depends on the probability of both the rainfall event as well as that of the antecedent soil moisture conditions. In particular, the probability of the rainfall event is calculated according to the familiar rainfall duration-intensity-frequency approach, whereas the ecohydrological method from the literature is used here to define the probability of the antecedent soil moisture conditions. The latter depends on a set of parameters de…

Hydrology010504 meteorology & atmospheric sciencesScale (ratio)0208 environmental biotechnologySoil science02 engineering and technology01 natural sciencesAgricultural and Biological Sciences (miscellaneous)020801 environmental engineeringDischarge prorwhiiiiy distributionEnvironmental scienceProbability distributionSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliHydrologic response Hillslope scale Discharge probability distribution Ecohydrological approachSurface runoffFeuhydrological approachHydrologie response: Hillslope scale0105 earth and related environmental sciencesWater Science and TechnologyCivil and Structural Engineering
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AN ANALYTICAL SOLUTION OF KINEMATIC WAVE EQUATIONS FOR OVERLAND FLOW UNDER GREEN-AMPT INFILTRATION

2010

This paper deals with the analytical solution of kinematic wave equations for overland flow occurring in an infiltrating hillslope. The infiltration process is described by the Green-Ampt model. The solution is derived only for the case of an intermediate flow regime between laminar and turbulent ones. A transitional regime can be considered a reliable flow condition when, to the laminar overland flow, is also associated the effect of the additional resistance due to raindrop impact. With reference to the simple case of an impervious hillslope, a comparison was carried out between the present solution and the non-linear storage model. Some applications of the present solution were performed…

Mathematical modelTurbulenceMechanical Engineeringlcsh:SBioengineeringLaminar flowMechanicslcsh:S1-972Industrial and Manufacturing EngineeringKinematic wavePhysics::Fluid Dynamicslcsh:AgricultureInfiltration (hydrology)hydrologic response infiltration analytical solution kinematic wave equationsImpervious surfaceGeotechnical engineeringlcsh:Agriculture (General)Surface runoffGeologyJournal of Agricultural Engineering
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