Item: The rime river
Title: The rime river
Proceedings: Proceedings of the 1998 International Snow Science Workshop, Sunriver, Oregon
Authors: Angelo Kokenakis, Arizona Snowbowl, Flagstaff, Arizona, Lee Dexter, Northern Arizona University, Flagstaff, Arizona
Abstract: On January 10th, 1995 two unique rime flow events occurred at the Arizona Snowbowl near Flagstaff, Arizona. A heavy accumulation of rime ice thawed rapidly from rock, tree and snow surfaces. The loosened rime feathers tumbled down the starting zone and coalesced into either channeled or sheet flows. The rime flows displayed many of the characteristics of earthen debris flows but were not accompanied by significant amounts of free water. The rime flows interfered with skiing and the Snowbowl staff was forced to close runs and manage the event during the entire day of the 10th. The rime flows were apparently triggered by a rapid temperature increase associated with subsiding air from aloft. The loosened rime was further mobilized by high velocity winds.
Keywords: snow and ice, rime, avalanche types, avalanche mechanics
Digital Abstract Not Available