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| Titel |
Use of a stochastic approach for description of water balance and runoff production dynamics |
| VerfasserIn |
A. Gioia, S. Manfreda, V. Iacobellis, M. Fiorentino |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250030496
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| Zusammenfassung |
| The present study exploits an analytical model (Manfreda, NHESS [2008]) for the description
of the probability density function of soil water balance and runoff generation over a set of
river basins belonging to Southern Italy. The model is based on a stochastic differential
equation where the rainfall forcing is interpreted as an additive noise in the soil water
balance; the watershed heterogeneity is described exploiting the conceptual lumped
watershed Xinanjiang model (widely used in China) that uses a parabolic curve for
the distribution of the soil water storage capacity (Zhao et al. [1980]). The model,
characterized by parameters that depend on soil, vegetation and basin morphology,
allowed to derive the probability density function of the relative saturation and
the surface runoff of a basin accounting for the spatial heterogeneity in soil water
storage. Its application on some river basins belonging to regions of Southern Italy,
gives interesting insights for the investigation of the role played by the dynamical
interaction between climate, soil, and vegetation in soil moisture and runoff production
dynamics.
Manfreda, S., Runoff Generation Dynamics within a Humid River Basin, Natural Hazard
and Earth System Sciences, 8, 1349-1357, 2008.
Zhao, R. -J., Zhang, Y. L., and Fang, L. R.: The Xinanjiang model, Hydrological
Forecasting Proceedings Oxford Symposium, IAHS Pub. 129, 351-356, 1980. |
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