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| Titel |
An experimental study of particle-driven gravity currents on steep slopes with entrainment of particles |
| VerfasserIn |
M. Rastello, C. Ancey, F. Ousset, R. Magnard, E. J. Hopfinger |
| 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. 3/4 ; Nr. 2, no. 3/4, S.181-185 |
| Datensatznummer |
250000278
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| Publikation (Nr.) |
 copernicus.org/nhess-2-181-2002.pdf |
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| Zusammenfassung |
| Results of laboratory experiments are
presented in which a finite suspension of sawdust particles was released
instantaneously into a rectangular channel immersed in a water tank. Two
kinds of gravity currents were studied: currents with or without
entrainment of particles from the bed. Experiments were repeated for two
slopes: 30° and 45°. We observed that the velocity of the front was
significantly in-creased as particle entrainment occurred. In addition,
our experiments showed that the front kept a quasi-constant velocity for
both runs. This might suggest that the flow regime corresponded to the
"slumping regime" or "adjustment phase" described
earlier by Huppert and Simpson (1980). |
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