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Simulation of hydrological response to rainfall requires the estimate of areal-average infiltration that, in principle, could be performed through the representation of the local infiltration into a horizontal surface gradient effect and the run-on process. These three elements are analyzed here on the basis of separate laboratory experiments that avoid a misinterpretation of their specific role. A summary of the experiments carried out for each investigation is shown in Table 1.

Table 1

Summary of the experiments performed for the analysis of three elements of the infiltration process

Validation of the conceptual model byCorradini et al. (1997)  
 Number of experiments 
 Artificial rain rate interval (mm h−115–24 
 Slope angle (°) 
Infiltration by the run-on mechanism 
 Number of experiments 24 
 Artificial rain rate interval (mm h−18.83–14.18 
 Slope angle interval (°) 1–15 
Infiltration into sloping soil 
 Number of experiments 65 
 Artificial rain rate interval (mm h−14.6–32.4 
 Slope angle interval (°) 1–15 
Validation of the conceptual model byCorradini et al. (1997)  
 Number of experiments 
 Artificial rain rate interval (mm h−115–24 
 Slope angle (°) 
Infiltration by the run-on mechanism 
 Number of experiments 24 
 Artificial rain rate interval (mm h−18.83–14.18 
 Slope angle interval (°) 1–15 
Infiltration into sloping soil 
 Number of experiments 65 
 Artificial rain rate interval (mm h−14.6–32.4 
 Slope angle interval (°) 1–15 

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