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- Montesarchio, ValeriaSapienza University of Rome, Rome, Italy (author)
Rainfall threshold definition using an entropy decision approach and radar data
- Article/chapterEnglish2012
Publisher, publication year, extent ...
- 2011-07-27
- Copernicus GmbH,2012
- electronicrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:uu-401007
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-401007URI
- https://doi.org/10.5194/nhess-11-2061-2011DOI
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- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- Flash flood events are floods characterised by a very rapid response of basins to storms, often resulting in loss of life and property damage. Due to the specific space-time scale of this type of flood, the lead time available for triggering civil protection measures is typically short. Rainfall threshold values specify the amount of precipitation for a given duration that generates a critical discharge in a given river cross section. If the threshold values are exceeded, it can produce a critical situation in river sites exposed to alluvial risk. It is therefore possible to directly compare the observed or forecasted precipitation with critical reference values, without running online real-time forecasting systems. The focus of this study is the Mignone River basin, located in Central Italy. The critical rainfall threshold values are evaluated by minimising a utility function based on the informative entropy concept and by using a simulation approach based on radar data. The study concludes with a system performance analysis, in terms of correctly issued warnings, false alarms and missed alarms.
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- Ridolfi, ElenaSapienza University of Rome, Rome, Italy(Swepub:uu)elero328 (author)
- Russo, FabioSapienza University of Rome (author)
- Napolitano, FrancescoSapienza University of Rome (author)
- Sapienza University of Rome, Rome, ItalySapienza University of Rome (creator_code:org_t)
Related titles
- In:Natural hazards and earth system sciences: Copernicus GmbH7, s. 2061-20741561-86331684-9981
Internet link
- https://doi.org/10.5194/nhess-11-2061-2011Fulltext
- https://uu.diva-portal.org/smash/get/diva2:1382702/FULLTEXT01.pdffulltext:print
- https://www.nat-hazards-earth-syst-sci.net/11/2061/2011/nhess-11-2061-2011.pdf
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-401007
- https://doi.org/10.5194/nhess-11-2061-2011
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