Articles | Volume 8, issue 6
Nat. Hazards Earth Syst. Sci., 8, 1349–1357, 2008
https://doi.org/10.5194/nhess-8-1349-2008

Special issue: Mediterranean Storms (Plinius 2007)

Nat. Hazards Earth Syst. Sci., 8, 1349–1357, 2008
https://doi.org/10.5194/nhess-8-1349-2008

  08 Dec 2008

08 Dec 2008

Runoff generation dynamics within a humid river basin

S. Manfreda S. Manfreda
  • Dipartimento di Ingegneria e Fisica dell'Ambiente (DIFA), Universit√† degli Studi della Basilicata, via dell'Ateneo Lucano, 10, Potenza, 85100, Italy

Abstract. The present paper introduces an analytical approach for the description of the soil water balance and runoff production within a schematic river basin. The model is based on a stochastic differential equation where the rainfall is interpreted as an additive noise in the soil water balance and is assumed uniform over the basin, the basin heterogeneity is characterized by a parabolic distribution of the soil water storage capacity and the runoff production occurs for saturation excess. The model allowed to derive the probability density function of the produced surface runoff highlighting the role played by climate and physical characteristics of a basin on runoff dynamics. Finally, the model have been tested over a humid basin of Southern Italy proposing also a strategy for the parameters estimation.

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