http://www.cnr.it/ontology/cnr/individuo/prodotto/ID118647
Lithological control on rainfall thresholds for the possible initiation of landslides in central Italy. (Abstract in rivista)
- Type
- Label
- Lithological control on rainfall thresholds for the possible initiation of landslides in central Italy. (Abstract in rivista) (literal)
- Anno
- 2011-01-01T00:00:00+01:00 (literal)
- Alternative label
Silvia Peruccacci (1), Maria Teresa Brunetti (1), Silvia Luciani (1,2), Carmela Vennari (2), and Fausto Guzzetti (1) (2011)
Lithological control on rainfall thresholds for the possible initiation of landslides in central Italy.
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Silvia Peruccacci (1), Maria Teresa Brunetti (1), Silvia Luciani (1,2), Carmela Vennari (2), and Fausto Guzzetti (1) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- Geophysical Research Abstracts, Vol. 13, EGU2011-5660, EGU General Assembly 2011, Vienna, Austria, 3 8 April 2011, (Abstract, Poster). (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- (1) CNR - IRPI, Perugia, Italy (silvia.peruccacci@irpi.cnr.it), (2) Università degli Studi di Perugia, Perugia, Italy (literal)
- Titolo
- Lithological control on rainfall thresholds for the possible initiation of landslides in central Italy. (literal)
- Abstract
- In Italy, landslides are frequent and widespread geomorphological phenomena triggered primarily by intense or
prolonged rainfall. Using a variety of information sources, we have compiled a national catalogue of 1200 rainfall
events that have resulted in documented landslides in Italy, between 1841 and 2010. The catalogue represents
the single largest collection of information on rainfall-induced landslides in Italy. We exploit the catalogue to
determine empirical intensity-duration (ID) rainfall thresholds for the possible occurrence of slope failures in
Italy (national ID thresholds). For the purpose, we use two independent and complementary statistical methods:
(i) a Bayesian inference method, and (ii) a Frequentist method. The national ID thresholds are currently used
in an operational landslide warning system to forecast rainfall-induced landslides in Italy. The Italian national
Department for Civil Protection uses the system routinely in an attempt to mitigate landslide risk in Italy.
From the available national catalogue, we select three regional subsets of rainfall events with landslides in central
Italy, including: (i) 175 events in the Marche region, (ii) 140 events in the Umbria region, and (iii) 84 events
in the Abruzzo region. First, for each region, we use the selected subsets of rainfall events with landslides to
determine separate regional ID thresholds. Next, using 1:500,000 scale regional lithological maps, we determine
the main lithological types in the areas where the rainfall induced landslides were reported. Lastly, we use the
rainfall and lithological information to investigate the role of lithology on rainfall thresholds for the possible initiation
of landslides in central Italy.We further attempt to generalize the obtained results at the national scale, in Italy. (literal)
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