Preprints
https://doi.org/10.5194/tc-2021-103
https://doi.org/10.5194/tc-2021-103

  15 Apr 2021

15 Apr 2021

Review status: this preprint is currently under review for the journal TC.

Brief communication: Weak control of snow avalanche deposit volumes by paths morphological characteristics

Hippolyte Kern1, Nicolas Eckert2, Vincent Jomelli1,3, Delphine Grancher1, Michael Deschatres3, and Gilles Arnaud-Fassetta4 Hippolyte Kern et al.
  • 1Université Paris 1 Panthéon-Sorbonne, LGP-CNRS, 1 place Aristide Briand, Meudon, France
  • 2UR ETNA, INRAe, Université Grenoble Alpes, Grenoble, France
  • 3Aix-Marseille University, CNRS, IRD, Coll. France, INRAE, CEREGE, 13545 Aix-en-Provence, France
  • 4Université de Paris, UMR 8586 PRODIG, 8, rue Albert Einstein, 75013 Paris, France

Abstract. Snow avalanches are a major component of the mountain cryosphere, but little is known about the factors controlling the variability of their deposit volumes. This study investigates the influence of morphological characteristics on c. 1500 deposit volumes recorded between 2003 and 2018 in 77 snow avalanche paths of the French Alps. Different statistical techniques show a slight but significant link between deposit volumes and path mean elevation and orientation, with contrasted patterns between winter and spring seasons. The weakness, partially non-linear nature of this control may result from the combined influence on the genesis of deposit volumes of mean path activity, climate conditions and mechanical thresholds determining avalanche release.

Hippolyte Kern et al.

Status: open (until 10 Jun 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Hippolyte Kern et al.

Hippolyte Kern et al.

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Short summary
Snow avalanches are a major component of the mountain cryosphere that often put people, settlements and infrastructures at risk. This study investigated avalanche path’s morphological factors controlling snow deposit volumes, a critical aspect of snow avalanche dynamics that remain poorly known. Different statistical techniques show a slight but significant link between deposit volumes and two path's morphological factors (mean elevation and orientation).