2012
DOI: 10.1007/s10346-011-0313-5
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Empirical and analytical analyses of laboratory granular flows to investigate rock avalanche propagation

Abstract: The rights are held by Springer-Verlag Wien.The final publication is available at http://link.springer.com. AbstractLaboratory experiments which consist of releasing dry rigid non-cohesive grains or small bricks on an unconfined chute have been designed to investigate rock avalanche propagation mechanisms and to identify parameters influencing their deposit characteristics. Factors such as volume, fall height, basal friction angle, material used, structure of the material before release, i.e. bricks randomly… Show more

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Cited by 72 publications
(40 citation statements)
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“…Of variables not tested, the fall height, which also determines the value of scriptF, is expected to control the travel distance. Also, the angle of the slope, as well as the shape of the transition between the plates, can be expected to play a significant role [e.g., Manzella and Labiouse , ]. In particular, these variables not only have a direct effect on the travel length but also on the degree of fragmentation, which in turn affects the travel distance of the center of mass.…”
Section: Discussionsupporting
confidence: 91%
“…Of variables not tested, the fall height, which also determines the value of scriptF, is expected to control the travel distance. Also, the angle of the slope, as well as the shape of the transition between the plates, can be expected to play a significant role [e.g., Manzella and Labiouse , ]. In particular, these variables not only have a direct effect on the travel length but also on the degree of fragmentation, which in turn affects the travel distance of the center of mass.…”
Section: Discussionsupporting
confidence: 91%
“…Likely due to the shape and the granular nature of the deposits, rock avalanches are often modelled as granular flows both in analogue (Davies and McSaveney 1999;Iverson et al 2004;Shea and van Wyk de Vries 2008;Dufresne 2012;Manzella and Labiouse 2012) and numerical (Campbell et al 1995;Mollon et al 2012) experiments. However, using granular material to model rock avalanches means assuming that dynamic fragmentation is negligible, i.e., one assumes that the rocks instantaneously disintegrate after detachment and that no further fragmentation occurs during the travel.…”
Section: Introductionmentioning
confidence: 99%
“…Okura et al (2000) obtained this effect on a laterally unconfined planar slope ending on a horizontal depositional plane with no lateral constraints. With such sharp breaks in slope, the larger the decrease in the slope inclination angle, the larger the energy dissipation of the flow (Manzella and Labiouse, 2013). In nature, the flank of a volcano provides an instance of a gradual change in the slope inclination angle (besides the flanks of Mayon Volcano, other examples illustrated in the literature are those of Mount Ngauruhoe (Lube et al, 2007) and Volcán de Colima (Saucedo et al, 2002)), whereas the intersection of a mountainside with an alluvial plain is an example of an abrupt change in the slope inclination angle.…”
Section: Flow Volume Effect On Flow Mobilitymentioning
confidence: 99%