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| Titel |
Characterization of a Mediterranean flash flood event using rain gauges, radar, GIS and lightning data |
| VerfasserIn |
M. Barnolas, A. Atencia, M. C. Llasat, T. Rigo |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 9th EGU Plinius Conference on Mediterranean Storms (2007) ; Nr. 17 (2008-06-20), S.35-41 |
| Datensatznummer |
250013622
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| Publikation (Nr.) |
 copernicus.org/adgeo-17-35-2008.pdf |
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| Zusammenfassung |
| Flash flood events are very common in Catalonia, generating a high impact on
society, including losses in life almost every year. They are produced by
the overflowing of ephemeral rivers in narrow and steep basins close to the
sea. This kind of floods is associated with convective events producing high
rainfall intensities. The aim of the present study is to analyse the 12–14 September 2006 flash flood event within the framework of the characteristics
of flood events in the Internal Basins of Catalonia (IBC). To achieve this
purpose all flood events occurred between 1996 and 2005 have been analysed.
Rainfall and radar data have been introduced into a GIS, and a
classification of the events has been done. A distinction of episodes has
been made considering the spatial coverage of accumulated rainfall in 24 h, and the degree of the convective precipitation registered. The study
case can be considered as a highly convective one, with rainfalls covering
all the IBC on the 13th of September. In that day 215.9 mm/24 h were recorded
with maximum intensities above 130 mm/h. A complete meteorological study of
this event is also presented. In addition, as this is an episode with a high
lightning activity it has been chosen to be studied into the framework of
the FLASH project. In this way, a comparison between this information and
raingauge data has been developed. All with the goal in mind of finding a
relation between lightning density, radar echoes and amounts of
precipitation. Furthermore, these studies improve our knowledge about
thunderstorms systems. |
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