Dense snow avalanche modeling: flow, erosion, deposition and obstacle effects

Naaïm, Mohamed; Naaim-Bouvet, Florence; Faug, Thierry; Bouchet, Alexi

doi:10.1016/j.coldregions.2004.07.001

Cited by 84 publications

(52 citation statements)

References 10 publications

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“…15). This very simple hazard model with two parameters only (ρ, λ) is well known in hydrology (Parent and Bernier, 2003) as a Peak Over Threshold (POT) model (Coles, 2001). Its relevance in the field of snow avalanches is discussed in Sect.…”

Section: A Conjugate Pot Model For Monovariate Avalanche Hazardmentioning

confidence: 99%

“…The influence of the dam can then be expressed in terms of volume storage for slow avalanches with typical Froude numbers around 1 , and the damage to the building can be quantified as a function of the volume of snow exceeding the dam. However, this type of risk model, often used for floods (Parent and Bernier, 2007), does not take into account the distance between the dam and the building, which is obviously not more suitable for a fluid with a complex rheology such as snow. Research is therefore in progress to keep a similar general Bayesian risk framework, but to consider a multivariate statistical-numerical model for avalanche propagation and numerical risk computations rather than simple analytical expressions.…”

Section: Monovariate Versus Multivariatementioning

confidence: 99%

See 1 more Smart Citation

Optimal design under uncertainty of a passive defense structure against snow avalanches: from a general Bayesian framework to a simple analytical model

Eckert

Parent

Faug

et al. 2008

Nat. Hazards Earth Syst. Sci.

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Abstract. For snow avalanches, passive defense structures are generally designed by considering high return period events. In this paper, taking inspiration from other natural hazards, an alternative method based on the maximization of the economic benefit of the defense structure is proposed. A general Bayesian framework is described first. Special attention is given to the problem of taking the poor local information into account in the decision-making process. Therefore, simplifying assumptions are made. The avalanche hazard is represented by a Peak Over Threshold (POT) model. The influence of the dam is quantified in terms of runout distance reduction with a simple relation derived from small-scale experiments using granular media. The costs corresponding to dam construction and the damage to the element at risk are roughly evaluated for each dam height-hazard value pair, with damage evaluation corresponding to the maximal expected loss. Both the classical and the Bayesian risk functions can then be computed analytically. The results are illustrated with a case study from the French avalanche database. A sensitivity analysis is performed and modelling assumptions are discussed in addition to possible further developments.

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Section: A Conjugate Pot Model For Monovariate Avalanche Hazardmentioning

confidence: 99%

Section: Monovariate Versus Multivariatementioning

confidence: 99%

Optimal design under uncertainty of a passive defense structure against snow avalanches: from a general Bayesian framework to a simple analytical model

Eckert

Parent

Faug

et al. 2008

Nat. Hazards Earth Syst. Sci.

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show abstract

“…Further, dynamic model estimation and use for long-term simulation requires some probabilistic assessment of model parameters (e.g. Ancey et al, 2003;Naaim et al, 2004), which goes beyond the scope of the present paper. Here, the relation between snow mass at release and runout is directly investigated.…”

Section: Avalanche Runout Vs Release Volumementioning

confidence: 99%

“…Voellmy, 1955;Perla et al, 1980) or continuous (e.g. Bartelt et al, 1999;Christen et al, 2002;Naaim et al, 2004), also including mass uptake (e.g. Sovilla and Bartelt, 2002;Naaim et al, 2003;Eglit and Demidov, 2005;Sovilla et al, 2006Sovilla et al, , 2007.…”

Section: Introductionmentioning

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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“…The latter could be improved by using digital models of avalanche propagation (Naaim et al, 2004) and/or refining the temporal assessment on the basis of already documented evolutions of the regional avalanche activity in answer to climate change (Eckert et al, 2013). Such perspectives could refine accessibility loss scenarios and accompany a reflexion with deciders on locally-developed response strategies to reinforce the resilience of mountain territories with high touristic stakes but with reduced accessibility.…”

mentioning

confidence: 99%