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Area of Science:

  • Avalanche safety and rescue science
  • Human factors in emergency response
  • Snow mechanics and excavation

Background:

  • Avalanches cause significant fatalities annually in Europe and North America.
  • Optimal equipment for avalanche victim recovery remains under investigation.
  • Standardized testing is needed to evaluate avalanche shovel performance.

Purpose of the Study:

  • To determine the performance parameters of different avalanche shovel shapes.
  • To assess sex-specific differences in snow removal efficiency.
  • To identify the most effective shovel design for avalanche victim recovery.

Main Methods:

  • A standardized snow removal test was developed using a snow-filled box.
  • Performance was evaluated using 15 men and 14 women with flat (F) and deep (D) shovel blades, and straight (S) or clearing (C) shaft modes.
  • Tested shovel configurations included FS, DC, and DC&DS.

Main Results:

  • Mean snow mass shifted per unit time increased significantly with shovel design: FS (1.50 kg/s) < DS (1.71 kg/s) < DC&DS (1.79 kg/s).
  • Men shifted 44% more snow per unit time than women (p < 0.05).
  • Results were most reliable with barely binding snow conditions.

Conclusions:

  • The deep blade with clearing mode shaft (DC&DS) configuration offers the highest snow removal efficiency.
  • Sex-specific physical performance is a critical factor in avalanche excavation.
  • Further research should consider varied snow conditions and shovel designs.