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| Titel |
Climatic control on the variability of flood distribution |
| VerfasserIn |
V. Iacobellis, P. Claps, M. Fiorentino |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 6, no. 2 ; Nr. 6, no. 2, S.229-238 |
| Datensatznummer |
250003456
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| Publikation (Nr.) |
 copernicus.org/hess-6-229-2002.pdf |
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| Zusammenfassung |
| The variability of the
second order moments of flood peaks with respect to geomorphoclimatic basin
characteristics was investigated. In particular, the behaviour of the
coefficient of variation (Cv) of the series of annual maximum floods was
analysed with respect to its dependence on physically consistent quantities. The
results achieved were in fairly good agreement with real world observed
characteristics and interesting insights on the relationship between Cv and
basin size were found. It appears that Cv is controlled mainly by the
climate and by some water loss features. Many observations reported in the
literature show a decrease of Cv with basin area A, usually ascribed to
the limited spatial extent of extreme events, which leads to a decrease with
area of the Cv of areal rainfall intensity. An increase of Cv with
the area is also sometimes observed for small basins. Such different behaviours
were accounted for by the concurrent effect on two parameters that affect the Cv (A)
relationship, representative of the way rainfall losses and effective
rainfall intensity scale with the basin area.
Keywords: floods, climate, coefficient of variation, scaling. |
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