Laboratory study of erosion processes in snow avalanches

Barbolini, Massimiliano; Biancardi, Alberto; Cappabianca, F.; Natale, L.; Pagliardi, M.

doi:10.1016/j.coldregions.2005.01.007

Cited by 32 publications

(22 citation statements)

References 16 publications

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“…Gauer and Issler, ; Barbolini et al ., ; Sovilla et al ., ) generally takes place through (1) ploughing, (2) deformation wave/impact erosion (ahead of the main body), (3) fluidization or pore pressure changes in systems where fluids are present, and (4) basal abrasion. (1) From observations in the laboratory (Barbolini et al ., ) and in field simulation of snow avalanches (Sovilla et al ., ) it appears that ploughing of the avalanche into the substrate is the most common entrainment mechanism, and likewise the most influential on avalanche dynamics. The main area of avalanche–substrate interaction in these cases is below and ahead of the avalanche front.…”

Section: Discussionmentioning

confidence: 99%

“…(; field experiments of snow avalanches and numerical modelling); Barbolini et al . (; laboratory granular flows); Gauer and Issler (; snow avalanches), McDougall and colleagues (McDougall and Hungr, ; McDougall et al ., ; landslide numerical modelling), Hungr and Evans (; rock avalanches); Toniolo et al . (; laboratory debris flows); Tischer et al .…”

Section: Introductionmentioning

confidence: 99%

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Granular flow experiments on the interaction with stationary runout path materials and comparison to rock avalanche events

Dufresne

2012

Earth Surf Processes Landf

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The central focus of this work is to study the processes acting well below the surface of a moving rock or debris avalanche during travel over stationary substrate material. Small‐scale physical models at a linear scale of 1:104 used coal as avalanche analogue material and different granular material simulating sedimentary substrates varying in frictional resistance, thickness and relative basal boundary roughness, as well as inerodible, non‐deformable runout path conditions. Substrate materials with the least frictional resistance showed the greatest response to granular flow overriding, becoming entirely mobilized beneath and ahead of the moving mass and producing the longest runout observed with a unique deposit profile shape. With a smooth substrate basal contact, failure occurred along this plane and avalanche and substrate became coupled during runout. With a rough base, however, temporary force chains of grain contacts in the substrate prevailed longer, imparted their resistance to motion/shear into the granular flow, and the flow rear section consequently halted earlier than when moving over substrates with a weak base. Reducing substrate thickness diminished the effect of basal contact roughness on granular flow runout and deposit length. Inerodible, non‐deformable substrate conditions caused changes in granular flow behaviour from essentially en masse sliding on low‐friction surfaces to increasing granular agitation over rougher paths. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Granular flow experiments on the interaction with stationary runout path materials and comparison to rock avalanche events

Dufresne

2012

Earth Surf Processes Landf

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“…Because H 72 can be used as a condition for erodible snow cover for mass uptake simulation (Bianchi Janetti and Gorni, 2007;Bianchi Janetti et al, 2008), the proposed model may give valuable input for long-term avalanche dynamics including mass uptake (e.g. Naaim et al, 2003;Eglit and Demidov, 2005;Barbolini et al, 2005;Sovilla et al, 2006Sovilla et al, , 2007. Furthermore, the present approach may be modified to include an assessment of medium to long-term scenarios of changes in snowfall dynamics on the avalanche frequencies.…”

Section: Discussionmentioning

confidence: 99%

Use of a Regional Approach for Long-Term Simulation of Snow Avalanche Regime: a Case Study in the Italian Alps

Bocchiola

Medagliani

Rosso

2009

Arctic, Antarctic, and Alpine Research

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“…Some examples are rock and snow avalanches (e.g. [3][4][5]), landslides (e.g. [6]), volcanic pyroclastic flows (e.g.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

An accurate elasto-plastic frictional tangential force–displacement model for granular-flow simulations: Displacement-driven formulation

Zhang

Vu‐Quoc

2007

Journal of Computational Physics

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Laboratory study of erosion processes in snow avalanches

Cited by 32 publications

References 16 publications

Granular flow experiments on the interaction with stationary runout path materials and comparison to rock avalanche events

Granular flow experiments on the interaction with stationary runout path materials and comparison to rock avalanche events

Use of a Regional Approach for Long-Term Simulation of Snow Avalanche Regime: a Case Study in the Italian Alps

An accurate elasto-plastic frictional tangential force–displacement model for granular-flow simulations: Displacement-driven formulation

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