Item: NEW PERSPECTIVE ON DRIFTING SNOW SLAB AVALANCHE
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Title: NEW PERSPECTIVE ON DRIFTING SNOW SLAB AVALANCHE
Proceedings: International Snow Science Workshop Proceedings 2023, Bend, Oregon
Authors:
- Yusuke Harada [ Civil Engineering Research Institute for Cold Region, Public Works Research Institute, Sapporo, Japan ]
- Ryuzo Wakabayashi [ Alpine Research Institute of Avalanche, Hakuba, Japan ]
- Kengo Moriyama [ WAKAVA Society, Hakuba, Japan ]
Date: 2023-10-08
Abstract: We introduce the idea that the top of the snowpack on a slope composed of wind-broken precipitation particles by creep and saltation of blowing snow (DFbk; size vf (< 0.2 mm)) tends to promote deformation due to densification after sintering by solar radiation or warm air advection during drifting snow following a snowstorm in the mountainous area, which is the key causation of avalanche release. In addition, the risk of drifting snow slab avalanche is greater in the path of side-loading during the drifting snow since fine snow particles are well-packed due to collision and fragmentation under sub-zero temperatures.
Object ID: ISSW2023_O16.03.pdf
Language of Article: English
Presenter(s): Yusuke Harada
Keywords: drifting snow, side-loading, slab avalanche, densification of snowpack
Page Number(s): 1245 - 1252
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