A unified model for infiltration and redistribution during complex rainfall patterns

Corradini, Corrado; Melone, F.; Smith, Roger E.

doi:10.1016/s0022-1694(96)03110-1

Cited by 101 publications

(120 citation statements)

References 16 publications

Supporting

Mentioning

117

Contrasting

Unclassified

Order By: Relevance

“…The parameters β and p of equation (7) were estimated through the procedure reported in Corradini et al (1997) which assumes βp = 1.7 during the redistribution period. The results obtained by the application of the CI model are shown for two sample events in Figs 2 and 3.…”

Section: Resultsmentioning

confidence: 99%

“…1) produces re-infiltration into a soil with soil water content at time t n variable with depth. Equation (7) is still applicable provided some adjustments linked to the concept of compound θ profiles are incorporated (see Corradini et al, 1997).…”

Section: Representation Of Infiltrationmentioning

confidence: 99%

“…Recently Corradini et al (1997) proposed a conceptual infiltration model (hereafter referred to as the CI model), which overcomes the above difficulty. It was found to provide infiltration rates very similar to those computed by the Richards equation, even for very complex rainfall patterns on a wide variety of soils.…”

Section: Introductionmentioning

confidence: 99%

“…Because of the high accuracy of the CI model, with errors in cumulated infiltration and time to ponding of the order of a few percent (see Corradini et al, 1997), the results obtained by using the semi-distributed rainfallrunoff model with infiltration computed by this component and rainfall pattern assumed known for the entire event is indicated as "observed" hydrograph. A further objective of this paper is to address the problem of selecting a spatially equivalent value of saturated hydraulic conductivity in each homogeneous area of the basin and to investigate the interaction of its approximation by the corresponding average value with the adaptive correction of forecast discharges.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Flood forecasting and infiltration modeling/Prévision de crue et modélisation de l’infiltration

Corradini

Morbidelli

Saltalippi

et al. 2004

Hydrological Sciences Journal

Self Cite

View full text Add to dashboard Cite

The role of accuracy in the representation of infiltration on the effectiveness of real-time flood forecasting models was investigated. A simple semi-distributed model of conceptual type with adaptive estimate of hydraulic characteristics included in the infiltration component was selected. Infiltration was described by a very accurate approach recently formulated for complex rainfall patterns, or alternatively through a simpler formulation known as an extension of the classical time compression approximation. The results indicated that, for situations involving a significant rainfall variability in space, the inaccuracy in the representation of infiltration cannot be corrected by the adaptive component of the rainfall-runoff model. A preliminary analysis of the role of an approximation of saturated hydraulic conductivity to be used in each homogeneous area of the semi-distributed model used both in non-adaptive version and in real-time is also presented.Key words rainfall-runoff; floods; infiltration; hillslope hydrology Prévision de crue et modélisation de l'infiltrationRésumé La sensibilité à la précision de la représentation de l'infiltration dans l'efficacité de modèles de prévision de crue en temps réel a été étudiée. Le modèle choisi est simple, semi-distribué, de type conceptuel, et présente une composante d'infiltration qui inclut une procédure adaptative d'estimation des caractéristiques hydrauliques. L'infiltration a été décrite alternativement par une approche très précise, formulée récemment pour des distributions de pluie complexes, et par une formulation plus simple connue comme étant une extension de l'approximation classique de compression temporelle. Les résultats montrent que, pour des situations qui impliquent une variabilité significative de la pluie dans l'espace, l'imprécision dans la représentation de l'infiltration ne peut pas être corrigée par la composante adaptative du modèle pluie débit. Nous présentons également une analyse préliminaire de l'influence de l'approximation de la conductivité hydraulique à saturation qui doit être faite dans chaque zone homogène du modèle semi-distribué, qu'il soit utilisé en configuration non-adaptative ou en temps réel.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Representation Of Infiltrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Flood forecasting and infiltration modeling/Prévision de crue et modélisation de l’infiltration

Corradini

Morbidelli

Saltalippi

et al. 2004

Hydrological Sciences Journal

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this paper we propose such a relatively simple analytical/ conceptual model for rainfall infiltration and redistribution in crusted soils. It is an extension of a model developed earlier [Corradini et al, 1997] for local infiltration and redistribution in homogeneous soils. The model described below involves the relatively simple numerical solution of a system of two nonlinear ordinary differential equations rather than the numerical solution of the Richards equation, which is used here as a benchmark.…”

Section: Introductionmentioning

confidence: 99%

A conceptual model for infiltration and redistribution in crusted soils

Smith¹,

Corradini²,

Melone³

1999

Water Resources Research

View full text Add to dashboard Cite

Abstract. Treating the crust as a single layer, a simplified but accurate infiltration and redistribution model for a crust-topped soil profile is developed. The method is an extension of an earlier infiltration and redistribution model for homogeneous soil profiles. The crust layer is conceptually subdivided into regions associated with surface water content and interface water content, respectively. The extension of the wetting front into the subsoil is described by the homogeneous soil method described earlier. Two ordinary differential equations are written which match pressure heads and fluxes at the soil interface and are solved by a Runge-Kutta technique. The model is tested against the results of the Richards equation with variations in the key variables of capillary length scale and saturated hydraulic conductivity for both soil and crust and for cases where ponding occurs both in the crust region and after wetting has entered the subsoil region. In all cases the profile water contents and infiltration rates are very reasonably simulated.

show abstract

Rainfall Excess Overland Flow

Smith

Goodrich

2005

Encyclopedia of Hydrological Sciences

View full text Add to dashboard Cite

One of the processes that can generate surface runoff is rainfall excess, which is a process controlled at the surface of the soil. This occurs when rainfall reaches the soil at a rate in excess of the soil's ability to absorb, which is called infiltrability. This dynamic property can in uniform soil be described by a rather well-developed infiltration theory. Surface water flow toward a receiving channel may in geometrically simple conditions be described by the kinematic or diffusive wave equations. The surface water is in continuous interaction with the soil's changing infiltrability. Both infiltration theory and surface flow equations are introduced here, and the interactions and complexities arising from spatial variations are discussed. These processes are incorporated in modern hydrologic response models, using numerical solutions as well as analytic solutions. The application of this theory in hydrology, however, must be informed by scale considerations and the appropriate treatment of natural complexities. Some scale limitations and some approximate methods for treating spatial soil variations are illustrated in this article, with reference to relevant literature.Encyclopedia of Hydrological Sciences. Edited by M G Anderson.

show abstract

A unified model for infiltration and redistribution during complex rainfall patterns

Cited by 101 publications

References 16 publications

Flood forecasting and infiltration modeling/Prévision de crue et modélisation de l’infiltration

Flood forecasting and infiltration modeling/Prévision de crue et modélisation de l’infiltration

A conceptual model for infiltration and redistribution in crusted soils

Rainfall Excess Overland Flow

Contact Info

Product

Resources

About