melt freeze crust Russian Roulette

Carte pour le rapport du Réseau d'information en montagne: melt freeze crust Russian Roulette

Conditions de neige

La qualité du hors-piste était:
Excellente
Les conditions de neige étaient :
  • Croûtée
  • Poudreuse
Nous avons parcouru:
  • Pentes alpines
  • Pentes convexes
  • Forêt dense
  • Pentes de faible inclinaison
  • Forêt dégagée
  • Pentes raides

Information

La journée était:
  • Nuageuse
  • De tempête

Commentaires

We sledded around lots of different aspects and elevations playing Russian Roulette today in the 110cm snow depth between 2000-2300m. The melt freeze crust was about 7cm thick at 2000m and 3cm thick at 2230m. It posed as a sneaky ski grabber which resulted in a couple endo's and ski bushing replacements. Didn't see any signs of instability while out hooning but did see some old debris from the melt freeze cycle on a very steep slope.

Dug a pitty at 2230m on a W-SW aspect. 30cm of new storm snow is bonding very nicely to the Dec 6 melt freeze crust (which is about 3cm thick at this elevation). Getting hard results on the Dec 1 surface hoar layer with a sudden collapse down 60cm. Bottom 20cm are unconsolidated facets.