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| Titel |
Technical Note: Preliminary estimation of rockfall runout zones |
| VerfasserIn |
M. Jaboyedoff, 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 ; 11, no. 3 ; Nr. 11, no. 3 (2011-03-15), S.819-828 |
| Datensatznummer |
250009263
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| Publikation (Nr.) |
 copernicus.org/nhess-11-819-2011.pdf |
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| Zusammenfassung |
| Rockfall propagation areas can be determined using a simple geometric rule
known as shadow angle or energy line method based on a simple Coulomb
frictional model implemented in the CONEFALL computer program. Runout zones
are estimated from a digital terrain model (DTM) and a grid file containing
the cells representing rockfall potential source areas. The cells of the DTM
that are lowest in altitude and located within a cone centered on a rockfall
source cell belong to the potential propagation area associated with that
grid cell. In addition, the CONEFALL method allows estimation of mean and
maximum velocities and energies of blocks in the rockfall propagation areas.
Previous studies indicate that the slope angle cone ranges from 27° to
37° depending on the assumptions made, i.e. slope morphology,
probability of reaching a point, maximum run-out, field observations.
Different solutions based on previous work and an example of an actual
rockfall event are presented here. |
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