Snow bridge

Snow bridge

:"For another meaning, see Avalanche snow bridge"Snow bridge is an arc across a crevasse, a crack in rock, a creek, or some other opening in terrain. [Elaine Freedgood (2000) Victorian Writing about Risk: Imagining a Safe England in a Dangerous World, ISBN 0521781086 [http://books.google.com/books?id=VnUZ3QKII-kC&pg=PA193&dq=%22snow+bridge+is%22&sig=kuzTUtd0Q0fB6dVlvdTzKQz-9Hg#PPA193,M1 p.193] ] It is typically formed by snow drift, which first creates a cornice, which may gradually grow to reach the other side of the opening.

Dangers

A snow bridge may completely cover the opening and thus presents danger: it creates an illusion of unbroken surface while hiding the opening under a layer of snow of unknown thickness, possibly only several centimeters thick.

Snow bridges may also be formed inside a crevasse making it appear shallow. [ [http://www.chauvinguides.com/BernerJournal/bernerjournal1.htm Berner Oberland Haute Route Journal] ]

Since a snow bridge is thicker and stronger at the edge of a crevasse, a fall through a bridge usually happens at some distance from the crevasse edge. ["Mountain Operations" (1947) By United States War Dept [http://books.google.com/books?id=odEsAAAAIAAJ&q=%22snow+bridge+is%22&dq=%22snow+bridge+is%22&pgis=1 p. 204] ]

ee also

*Ice bridge

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Avalanche snow bridge — See snow bridge for another meaning An avalanche snow bridge or simply snow bridge is a type of rigid snow supporting structure for avalanche control (avalanche defense). Avalanche bridges can be made of steel, prestressed concrete frames, or… …   Wikipedia

  • Snow-supporting structure — Snow supporting structures are structures for avalanche control. They are subdivided into rigid structures and flexible structures. [ [http://geosurvey.state.co.us/Default.aspx?tabid=400 Mitigation and Land Use Avalanches ] , Colorado Geological… …   Wikipedia

  • Snow Patrol — redirects here. For the rescue service for skiers and participants in other snow sports, see Ski patrol and Mountain rescue. Snow Patrol Snow Patrol, from L–R: Nathan Connolly, Gary Lightbody, Jonny Quinn, Tom Simpson, Paul Wilson Backg …   Wikipedia

  • Snow (Hey Oh) — Snow ((Hey Oh)) Snow ((Hey Oh)) Single par Red Hot Chili Peppers extrait de l’album Stadium Arcadium (CD 1) Sortie 2006 Enregistrement En studio Durée 5 min et 34 sec Genre(s) …   Wikipédia en Français

  • Snow ((Hey Oh)) — Single par Red Hot Chili Peppers extrait de l’album Stadium Arcadium (CD 1) Sortie 2006 Enregistrement En studio Durée 5 min et 34 s Genre …   Wikipédia en Français

  • Bridge Publications (Scientology) — Bridge Publications New Era Publications, Copenhagen Formation 1993 Type Religious publishing Legal status Non profi …   Wikipedia

  • Snow Hill Covered Bridge — Die Snow Hill Covered Bridge (auch Johnson Fork Covered Bridge genannt) ist eine historische, überdachte Strassenbrücke im Madison County, im US Bundesstaat Indiana, in den Vereinigten Staaten. Die Brücke befindet sich an der Snow Hill Road und… …   Deutsch Wikipedia

  • Snow Dogs — Infobox Film | name = Snow Dogs caption = Snow Dogs promotional poster director = Brian Levant producer = Casey Grant Jordan Kerner writer = Gary Paulsen (book) (screenplay) Jim Kouf, Tommy Swerdlow Michael Goldberg, Mark Gibson Philip Halprin… …   Wikipedia

  • Snow Hill —    North west out of Holborn Viaduct to the Central Meat Market in Smithfield, and to Farringdon Street (P.O. Directory).    This street has been entirely reconstructed, and though retainlng its old name it occupies a wholly different site.… …   Dictionary of London

  • Smethwick Galton Bridge railway station — Infobox UK station name = Smethwick Galton Bridge manager = London Midland locale = Smethwick borough = Sandwell pte = West Midlands zone = 2 code = SGB lowusage0405 = 88,782 lowusage0506 = 102,692 lowusage0607 = 116,401 platforms = 4 years =… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”