Definitions for "Depth Hoar"
English term for Pukak. Hoar means old frost, so it is old frost in snow.
Fragile crystal formed within the snow cover when strong temperature gradients induce existing snow crystals or grains to recrystallize by passing through the vapor phase.
large (one to several millimeters in diameter), cohesionless, coarse, faceted snow crystals which result from the presence of strong temperature gradients within the snowpack