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| Titel |
On the application of kinematic models to simulate the diffusive processes of debris flows |
| VerfasserIn |
M. Arattano, L. Franzi |
| 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 ; 10, no. 8 ; Nr. 10, no. 8 (2010-08-18), S.1689-1695 |
| Datensatznummer |
250008345
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| Publikation (Nr.) |
 copernicus.org/nhess-10-1689-2010.pdf |
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| Zusammenfassung |
| Debris flows generally propagate along steep mountain torrents with
dynamics primarily governed by gravitational and frictional forces.
Thus, debris flows modelling can be successfully performed through
the application of kinematic models, which consider only the effects
of slope and friction and neglect the remaining terms of the
momentum equation. However, the diffusion processes that can be
observed in the field, such as the spreading of the debris flow wave
as it flows downstream, can not be theoretically predicted by
kinematic models, since diffusion is a second-order process
neglected in the kinematic approximation. In this paper, this issue
is discussed and an application for both a generalized diffusion
wave model and a kinematic model is proposed of a debris flow which
occurred in an Italian instrumented torrent to identify, in a real
case scenario, the effective value of the neglected terms in the
kinematic approximation. |
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