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| Titel |
Regional parent flood frequency distributions in Europe – Part 2: Climate and scale controls |
| VerfasserIn |
J. L. Salinas, A. Castellarin, S. Kohnova, T. R. Kjeldsen |
| 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 ; 18, no. 11 ; Nr. 18, no. 11 (2014-11-05), S.4391-4401 |
| Datensatznummer |
250120517
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| Publikation (Nr.) |
 copernicus.org/hess-18-4391-2014.pdf |
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| Zusammenfassung |
| This study aims to better understand the effect of catchment scale and climate on the statistical properties of regional flood
frequency distributions. A database of L-moment ratios of annual maximum series (AMS) of peak discharges from Austria, Italy
and Slovakia, involving a total of 813 catchments with more than 25 yr of record length is presented, together with mean annual
precipitation (MAP) and basin area as catchment descriptors surrogates of climate and scale controls. A purely data-based
investigation performed on the database shows that the generalized extreme value (GEV) distribution provides
a better representation of the averaged sample L-moment ratios compared to the other distributions considered, for catchments
with medium to higher values of MAP independently of catchment area, while the three-parameter lognormal distribution is
probably a more appropriate choice for drier (lower MAP) intermediate-sized catchments, which presented higher skewness values.
Sample L-moment ratios do not follow systematically any of the theoretical two-parameter distributions. In particular, the
averaged values of L-coefficient of skewness (L-Cs) are always larger than Gumbel's fixed L-Cs.
The results presented in this paper contribute to the progress in defining a set of "process-driven" pan-European flood frequency
distributions and to assess possible effects of environmental change on its properties. |
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