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| Titel |
Rainfall induced landslides in December 2004 in south-western Umbria, central Italy: types, extent, damage and risk assessment |
| VerfasserIn |
M. Cardinali, M. Galli, F. Guzzetti, F. Ardizzone, P. Reichenbach, P. Bartoccini |
| 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 ; 6, no. 2 ; Nr. 6, no. 2 (2006-04-20), S.237-260 |
| Datensatznummer |
250003401
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| Publikation (Nr.) |
 copernicus.org/nhess-6-237-2006.pdf |
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| Zusammenfassung |
| The autumn of 2004 was particularly wet in Umbria, with cumulative rainfall
in the period from October to December exceeding 600 mm. On 4–6 December and
on 25–27 December 2004, two storms hit the Umbria Region producing numerous
landslides, which were abundant near the town of Orvieto where they affected
volcanic deposits and marine sediments. In this work, we document the type
and abundance of the rainfall-induced landslides in the Orvieto area, in
south-western Umbria, we study the rainfall conditions that triggered the
landslides, including the timing of the slope failures, we determine the
geotechnical properties of the failed volcanic materials, and we discuss the
type and extent of damage produced by the landslides. We then use the recent
event landslide information to test a geomorphological assessment of
landslide hazards and risk prepared for the village of Sugano, in the
Orvieto area. Based on the results of the test, we update the existing
landslide hazards and risk scenario for extremely rapid landslides, mostly
rock falls, and we introduce a new landslide scenario for rapid and very
rapid landslides, including soil slides, debris flows and debris avalanches. |
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