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| Titel |
Considerations on Swiss methodologies for rock fall hazard mapping based on trajectory modelling |
| VerfasserIn |
J. M. Abbruzzese, C. Sauthier, V. Labiouse |
| 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 ; 9, no. 4 ; Nr. 9, no. 4 (2009-07-09), S.1095-1109 |
| Datensatznummer |
250006874
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| Publikation (Nr.) |
 copernicus.org/nhess-9-1095-2009.pdf |
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| Zusammenfassung |
| Rock fall hazard assessment and hazard mapping are essential for the risk
management of vulnerable areas. This paper analyses some issues concerning
fragmental rock fall hazard mapping methodologies. Two Swiss approaches
based on rock fall trajectory simulations results are presented. An
application to a site in Switzerland emphasises the differences in the
results, uncertainties related to hazard zoning procedures and the influence
of some factors on the mapping process. In particular, the influence of a
change in the temporal rock fall frequency, of the longer propagation along
the slope of only a few computed blocks (defined in this sense as "extreme
blocks") and of the number of runs performed in trajectory modelling have
been studied. Results are discussed with the purpose of achieving a more
reliable and objective hazard analysis. The presented considerations are
based on the Swiss Federal Guidelines, but many of them could be extended to
other countries that evaluate rock fall hazard using an intensity-frequency
diagram. |
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