Publication

Les avalanches de neige

2017
Book Chapters

Abstract

Les avalanches sont des écoulements rapides de neige sur une pente de montagne. Par extension, cela peut être des écoulements d’autres matériaux ; on parle parfois d’avalanche sous-marine ou d’avalanches de pierre. Le moteur de l’écoulement est la gravité. Les vitesses atteintes par une avalanche couvrent une large plage allant des faibles vitesses (quelques m/s) à des vitesses approchant celle d’un corps en chute libre (plus de 30 m/s). Les hauteurs d’écoulement sont également très variables : de quelques mètres pour des écoulements denses à plus de 100 m pour un écoulement dilué. Les distances parcourues sont également très variables : de quelques dizaines de mètres pour une petite coulée à plusieurs kilomètres pour les grosses avalanches mobilisant des volumes de plusieurs centaines de milliers de m3.

Official source

https://infoscience.epfl.ch/entities/publication/4b64cf18-f865-42b9-953d-1a063ea419a9

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2017
Book Chapters

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/4b64cf18-f865-42b9-953d-1a063ea419a9

About this result

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