The Effects of free water on snow gliding

  1. (PDF, 1 MB)
  2. Get@NRC: The Effects of free water on snow gliding (Opens in a new window)
AuthorSearch for: ; Search for:
Journal titleJournal of Geophysical Research B
Pages63016309; # of pages: 9
Subjectavalanches; snow loads; snowpack drag - relation to glide velocity; snow mechanics; charge de neige
AbstractConventional equations that relate snowpack drag to glide velocity take no account of the possible influences of free water at or near the snow-earth interface. For this reason two of the most important applications of snow mechanics, predicting maximum forces on structures and predicting the release of full-depth avalanches, lie beyond the scope of present theory. 2Here we discuss two effects that can decrease snowpack drag and increase glide velocity: (1) reduction of snow viscosity by the presence of water in the lowest layers, and (2) partial separation of the snowpack from the glide interface. For partial separation we show how the presence of free water covering portions of the interface reduces the effective roughness and increases glide speed; for significant enhancement of the glide rate a substantial fraction of the bed must be water covered.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number27999
NPARC number20331436
Export citationExport as RIS
Report a correctionReport a correction
Record identifierfb0c56fa-3132-4e2a-b00e-df74a29cb7fc
Record created2012-07-18
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)
Date modified: