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| Titel |
Impact of mapping errors on the reliability of landslide hazard maps |
| VerfasserIn |
F. Ardizzone, M. Cardinali, A. Carrara, F. Guzzetti, P. Reichenbach |
| 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.3-14 |
| Datensatznummer |
250000261
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| Publikation (Nr.) |
 copernicus.org/nhess-2-3-2002.pdf |
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| Zusammenfassung |
| Identification and
mapping of landslide deposits are an intrinsically difficult and
subjective operation that requires a great effort to minimise the inherent
uncertainty. For the Staffora Basin, which extends for almost 300 km2 in
the northern Apennines, three landslide inventory maps were independently
produced by three groups of geomorphologists. In comparing each map with
the others, large positional discrepancies arise (in the range of 55–65%).
When all three maps are overlain, the locational mismatch of landslide
deposit polygons increases to over 80%. To assess the impact of these
errors on predictive models of landslide hazard, for the study area
discriminant models were built up from the same set of geological-geomorphological
factors as predictors, and the occurrence of landslide deposits within
each terrain-unit, derived from each inventory map, as dependent variable.
The comparison of these models demonstrates that statistical modelling
greatly minimises the impact of input data errors which remain, however, a
major limitation on the reliability of landslide hazard maps. |
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