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| Titel |
The occurrence of floods and the role of climate variations from 1880 in Calabria (Southern Italy) |
| VerfasserIn |
M. Polemio, O. Petrucci |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 12, no. 1 ; Nr. 12, no. 1 (2012-01-13), S.129-142 |
| Datensatznummer |
250010411
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| Publikation (Nr.) |
 copernicus.org/nhess-12-129-2012.pdf |
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| Zusammenfassung |
In this paper, we present a methodological approach based on a comparative
analysis of floods that occurred in a wide region over a long period and the
climatic data characterising the same period, focusing on the climate trend.
The method simplifies the comparative analysis of several time series by
defining some indexes (e.g. the monthly, bi-monthly, and ...
m-monthly indexes of precipitation, temperature, wet days and precipitation
intensity and the monthly flood number) that can be used to study phenomena
such as floods that are characterised by spatial and temporal variability.
The analysis was used to investigate the potential effect of climate
variation on the damaging floods trend.
The approach was tested for the Calabria region (Italy) using historical
flood and climatic data from 1880 to 2007. The results showed that the
number of floods was correlated with the monthly indexes of precipitation,
wet days, and daily precipitation intensity. The following trends were
recognised: decreasing precipitation and wet days, almost constant
precipitation intensity, increasing temperature, and linearly increasing
floods. A second-order polynomial trend analysis showed a slight decrease in
floods since the seventies, which might be explained by the favourable
climatic conditions during the period and/or the effect of increasing
awareness of flood vulnerability. |
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