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| Titel |
A geomorphological approach to the estimation of landslide hazards and risks in Umbria, Central Italy |
| VerfasserIn |
M. Cardinali, P. Reichenbach, F. Guzzetti, F. Ardizzone, G. Antonini, M. Galli, M. Cacciano, M. Castellani, P. Salvati |
| 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 ; 2, no. 1/2 ; Nr. 2, no. 1/2, S.57-72 |
| Datensatznummer |
250000266
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| Publikation (Nr.) |
 copernicus.org/nhess-2-57-2002.pdf |
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| Zusammenfassung |
| We present a
geomorphological method to evaluate landslide hazard and risk. The method
is based on the recognition of existing and past landslides, on the
scrutiny of the local geological and morphological setting, and on the
study of site-specific and historical information on past landslide
events. For each study area a multi-temporal landslide inventory map has
been prepared through the interpretation of various sets of stereoscopic
aerial photographs taken over the period 1941–1999, field mapping
carried out in the years 2000 and 2001, and the critical review of
site-specific investigations completed to solve local instability
problems. The multi-temporal landslide map portrays the distribution of
the existing and past landslides and their observed changes over a period
of about 60 years. Changes in the distribution and pattern of landslides
allow one to infer the possible evolution of slopes, the most probable
type of failures, and their expected frequency of occurrence and
intensity. This information is used to evaluate landslide hazard, and to
estimate the associated risk. The methodology is not straightforward and
requires experienced geomorphologists, trained in the recognition and
analysis of slope processes. Levels of landslide hazard and risk are
expressed using an index that conveys, in a simple and compact format,
information on the landslide frequency, the landslide intensity, and the
likely damage caused by the expected failure. The methodology was tested
in 79 towns, villages, and individual dwellings in the Umbria Region of
central Italy. |
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