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Considerations on scaling behavior in avalanche flow: Implementation in a simple mass block model
Cold Regions Science and Technology ( IF 3.8 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.coldregions.2020.103165
Peter Gauer

Abstract Observations of runout distances combined with velocity measurements suggest that “major” dry-mixed avalanches show a scale invariance to the total drop height HSC. This is in accordance to the proposed upper-limit envelope of the maximum velocity by McClung and Schaerer (2006). The observations are also supported by a simple scaling analysis using a simple mass block model on cycloidal and parabolic tracks (Gauer, 2018b), concluding U max ~ gH SC / 2 . In this supplementary paper, a simple mass block model is presented that includes basic observations of major dry-mixed avalanches, such as mass entrainment and deposition, and that reflects this scale invariance. Almost all model parameters can principally be observed in the field. Model results are compared with a series of avalanche observations of runout and velocity and match well, considering that the model is a first order approximation.

中文翻译:

关于雪崩流中缩放行为的考虑:在简单质量块模型中的实现

摘要 对跳动距离的观察与速度测量相结合表明,“主要”干混雪崩显示出对总落差 HSC 的尺度不变性。这与 McClung 和 Schaeer (2006) 提出的最大速度的上限包络相一致。使用摆线和抛物线轨道上的简单质量块模型(Gauer,2018b)进行的简单缩放分析也支持观察结果,得出结论 U max ~ gH SC / 2 。在这篇补充论文中,提出了一个简单的质量块模型,其中包括对主要干混雪崩的基本观察,例如质量夹带和沉积,并反映了这种尺度不变性。基本上可以在现场观察到几乎所有模型参数。模型结果与一系列跳动和速度的雪崩观测结果进行比较,匹配良好,
更新日期:2020-12-01
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