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Topic: Crevasse

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In the News (Wed 22 May 19)

  Mountaineering & Crevasse in Calgary, Banff, and Kananaskis Alberta and British Columbia (BC), Canada
Mountaineering and Crevasse in Calgary, Banff, and Kananaskis Alberta and British Columbia (BC), Canada
In this 3-day comprehensive introduction to general mountaineering, you'll learn the basic techniques of moving on snow and ice plus an understanding of safe glacier travel and crevasse rescue.
Prior experience is not needed, just a sense of adventure and lots of enthusiasm as you learn snow and ice climbing, crevasse rescue, glacier travel, route finding, navigation and much more.
www.calgaryoutdoorcentre.ca /mountaineering-and-crevasse   (150 words)

 crevasse   (Site not responding. Last check: 2007-09-22)
Crevasses are simply defined as cracks in the surface of a glacier or ice sheet that is caused by extensive stress within the ice.
Crevasses are simply elongated cracks that from when the ice sheet is stretched passed its breaking point.
Crevasses can be very small, no more than 5 feet deep, or the can be enormous where the bottom of it can not be seen.
www.nichols.edu /departments/Glacier/crevasse/crevasse.htm   (412 words)

 :: NASA Quest > Archives ::   (Site not responding. Last check: 2007-09-22)
In an area where crevasses are expected and there is enough concern for the leader to start probing, the second person on the rope should keep the rope tight enough to raise it off the ground.
First the crevasse lip under the rope to the victim must be padded by sliding an ice axe, pack, skis, etc., under the loaded rope.
Crevasse rescue is a strenuous, complicated process that is difficult under the best of conditions, and cannot be completed without prior practice.
quest.arc.nasa.gov /antarctica/background/NSF/field-guide/manual17.html   (3288 words)

 Crevasse rescue - Wikipedia, the free encyclopedia
Crevasse rescue is the process of retrieving a climber from a crevasse in a glacier.
Many crevasses are small or slanted, and the fallen climber may be able to escape by digging or wiggling out; but if the climber is hanging in midair, one of several rescue techniques will need to be used.
If the climber in the crevasse is able to move, he or she may be able to use prusik knots with slings or Jumars to ascend the rope.
en.wikipedia.org /wiki/Crevasse_rescue   (578 words)

 crevasse - HighBeam Encyclopedia
crevasse, large crack in the upper surface of a glacier, formed by tension acting upon the brittle ice.
Transverse crevasses occur where the grade of the glacier bed becomes suddenly steeper; longitudinal crevasses, where the glacier spreads over a wider valley or plain.
Marginal crevasses are due to the strain built up when the central part moves faster than the sides.
www.encyclopedia.com /doc/1E1-crevasse.html   (277 words)

 Crevasse Rescue
The ideal scenario is for the lead to fall into the crevasse first as the remaining ascender(s) will have the assistance of the slope and gravity.
With feet unencumbered the victim may now be able to scramble out of the crevasse although this is rarely simply as the walls may be ice and the lip overhanging.
Crevasse rescue takes practise and anyone thinking of going into glaciated terrain is advised to take a training course beforehand and go with experienced friends or a guide.
pistehors.com /backcountry/wiki/Technique/Crevasse-Rescue   (1069 words)

 Mt. Baker - Crevasse rescue   (Site not responding. Last check: 2007-09-22)
There are several parameters that affect crevasse rescue: how many people have fallen into the crevasse, whether or not they are able to climb out themselves, how many people are on the surface, and where they are (all on the same side of the crevasse, or some on each side).
The easiest situation is if the person who falls into the crevasse happens to land safely on a ledge and can climb out themselves, and everybody who is on the surface is on the same side of the crevasse.
Whenever we were on a glacier that may have crevasses, we would each travel with our prussiks tied around the main rope just in front of us, and the other end in our pockets.
www.translucence.com /baker0794/baker0794day3.html   (728 words)

 Subsurface crevasse formation in glaciers and ice sheets
We present ground-penetrating radar data acquired on the Rutford Ice Stream, Antarctica, which indicate that crevasses occur at depths of several meters beneath the ice surface and were formed in areas where surface crevassing is absent.
We consider the initiation of an isolated crevasse from a subsurface crack, subject to a “dynamic tensile stress” which results from deformation associated with ice movement and a weight-induced lithostatic stress.
In earlier models of crevasse formation, it was assumed that the dynamic tensile stress is constant with depth.
www.agu.org /pubs/crossref/2003/2001JB000453.shtml   (400 words)

A "crevasse" is a large deep crack in the surface of a glacier, caused by the ice flowing over uneven terrain.
Crevasses are often hidden by overlying snow, and falling into one is extremely dangerous.
A "crevice" cannot be a "crevasse" unless it is in a glacier.
www.athropolis.com /arctic-facts/fact-crevasse.htm   (334 words)

 The Cryosphere: Where the World is Frozen   (Site not responding. Last check: 2007-09-22)
crevasse that separates flowing ice from stagnant ice at the head of a glacier.
opening through a snow bridge into a crevasse or system of crevasses which are otherwise sealed by snow bridges; a snowdrift usuallly forms on the lee side.
a kind of hoarfrost; ice crystals that develop by sublimation in glacial crevasses and in other cavities with cooled space and calm, still conditions under which water vapor can accumulate; physical origin is similar to depth hoar.
nsidc.org /glaciers/glossary/crevasse.html   (6027 words)

 planetFear / Articles / Backcountry Skiing / Crevasse Tricks
Crevasse location is never completely predictable, but the simple trick of remembering that crevasses form when the ice comes under tension can show us where most crevasses are likely to be and in which way they will point.
The advantage of roping up is that a crevasse fall is potentially less serious as you should be able to stop the victim before they fall too far in.
Crevasse rescue is not a difficult skill to learn, but it is quite technical and it can be all too easy to get it wrong.
www.planetfear.com /article_detail.asp?a_id=379   (1543 words)

The one on the left is flowing at a faster rate, thus prevent the smooth plastic flow exhibited by the surface of the glacier on the right.
Crevasses have formed in the faster flowing glacier on the left.
A crevasse is a large crack in the glacier formed by differential flow rate.
www.uwsp.edu /geo/faculty/ritter/glossary/a_d/crevasse.html   (77 words)

 Backpacker Jargon - :Crevasse   (Site not responding. Last check: 2007-09-22)
Crevasses in the glaciers and in the flanks of beautiful mountains can become covered with snow and thus hidden from casual observation.
Falling into a crevasse is, needless to say, a serious situation to be avoided at all costs.
In the process, the weaker ice near the surface fractures causing crevasses to form.
www.bpbasecamp.com /jargon/0,2672,51,00.html   (152 words)

 planetFear / Articles / Backcountry Skiing / Crevasse Rescue Technique
Choose an anchor position 5 metres back from the edge of the crevasse and in line with where the victim went over (set to one side there is a risk that the victim will pendulum on the rope).
Crevasse rescue is not difficult but it is one of the more complex and technical processes you need to learn and it is easy to make mistakes if you get confused.
Dropping your victim further into the crevasse because of a fault in setting up the rescue system is far worse than leaving them there for a couple of extra minutes while you check the set up.
www.planetfear.com /article_detail.asp?a_id=380   (1670 words)

 danger-crevasse   (Site not responding. Last check: 2007-09-22)
A missing ski mountaineer has been found dead at the bottom of a crevasse on the Glacier du Rognon, a variant of the of the popular Vallée Blanche route.
Kairn.com reports that a 26 year old Czech skier has been rescued after spending an uncomfortable 30 hours in a crevasse on the Glacier de la Girose in the la Grave area.
Crevasses form in glaciers when the giant ice flows pass over changes in the underlying terrain.
pistehors.com /news/ski/comments/danger-crevasse   (947 words)

 SignOnSanDiego.com > News > Mexico -- Fireman reported killed after huge mile-long crevasse opens along fault in ...
MEXICO CITY – A gaping, mile-long crevasse opened early Tuesday along what officials described as a geological fault line in western Mexico, and a fireman who fell into the crevice was reportedly found dead at the bottom of the fissure.
The fireman was one of four civil defense personnel who were using tape to cordon off the crevasse when one of the edges gave way and all four tumbled about 20 feet (7 meters) to the bottom.
Three were rescued alive; one was taken to a hospital with serious injuries, while the other two suffered slight injuries in the fall.
www.signonsandiego.com /news/mexico/20040630-2044-mexico-crevasse.html   (267 words)

 Crevasse Bridge   (Site not responding. Last check: 2007-09-22)
The inside of a crevasse is a fascinating place, a cool contrast to the blazing sun up on the surface.
The surrounding glacier creaks and groans ominously, evidence of its relentless downhill motion which creates the gaping crevasses.
The horizontal strata visible in the crevasse wall each represent a year's snow accumulation, separated by a dark layer of dirt and dust from each summer.
www.skimountaineer.com /Trips/SkiCrevasse/CrevasseBridge.html   (107 words)

 NOVA Online | Surviving Denali | Crevasse Rescue
On Denali there is an ever-present danger of falling into a crevasse, so climbers should never travel unroped.
When a climber falls into a crevasse his/her partners must immediately move into self-arrest positions to prevent the climber from falling any deeper into the crevasse.
If the climber is uninjured, he/she can then begin to climb out of the crevasse under his/her own power, using jumar ascenders or tension knots.
www.pbs.org /wgbh/nova/denali/extremes/survcrev.html   (202 words)

 Crevasse - LoveToKnow 1911
CREVASSE, a French word used in two senses.
(1) In French Switzerland, and thence universally in high mountain regions, it designates a fissure in a glacier caused by gigantic cracks in the ice-mass, sometimes of great depth, into which climbers frequently fall through a light bridge of snow which conceals the crevasse.
This page was last modified 16:26, 24 Sep 2006.
www.1911encyclopedia.org /Crevasse   (92 words)

 Portland Mountain Rescue | Press Room | Headlines | Hood Crevasse Rescue - May 18, 2004
As rescuers began making their way to the scene, one of the good samaritan climbers lowered himself into the crevasse to attend to the injured man as best as possible until others arrived.
Shortly thereafter, eight PMR team members arrived carrying a rescue litter and ropes that would eventually be used to extract the injured man from the icy crevasse.
Two PMR rescuers entered the crevasse with the litter and prepared the patient for a trip back to the surface.
www.pmru.org /pressroom/headlines/hoodcrevasse051804.html   (542 words)

 Crevasse Rescue Training for Ski Mountaineers
This course is designed to introduce or refresh the skills of winter crevasse rescue and will allow opportunity to practice these skills in a safe environment under the watchful eyes of experienced Mountain Guides.
In winter we must adjust systems to reflect that the person in the crevasse will be wearing skis and also to use skis and other winter gear in making rescue anchors.
The greater cold makes a crevasse rescue in winter much more serious and it is also more possible that a victim may be unroped.
www.yamnuska.com /winter_crevasse_rescue.shtml   (688 words)

 Get Outdoors - Glacier Travel: Crevasse Rescue: Rescue Response
On a fine day, the walls are a sheen of soft blue ice in the filtered light from high above, and the cavern is cool and still as a church, or a tomb.
The goal is to anchor the climber who is in the crevasse and allow the rescuers safe access to communicate with their fallen comrade.
Of course, it requires that the climber be basically uninjured and able to maneuver in the crevasse.
syndication.getoutdoors.com /go/golearn/444   (437 words)

 Get Outdoors - Glacier Travel: Fundamentals: Crossing a Crevasse Field
Where a crevasse pinches down in width, often near its end, the safest and most dependable technique is to go around it, in an end run.
Look closely at adjacent crevasses to judge whether one of them could be an extension of your crevasse; you could actually be crossing a snow bridge.
This formation is safest on stable, heavily crevassed glaciers where location of the crevasses is known and the risk of hidden holes is small.
syndication.getoutdoors.com /go/golearn/442   (770 words)

 Skier Fallen into Crevasse   (Site not responding. Last check: 2007-09-22)
Each group consisted of two pairs of buried and equalized pickets, one pair to anchor the 'accident rope' and the other to hold the 'phantom belay rope', to provide a margin of safety in case of a real problem with the 'accident rope'.
Thus two skiers could be independently lowered into and 'rescued' from the crevasse at the same time.
Here I am hanging about 40 feet down in the crevasse, looking over at a skier hanging on the other set of ropes.
www.skimountaineer.com /Trips/SkiCrevasse/CrevasseFall.html   (97 words)

 The Crevasse Zone, GPS glacier surface movement and elevation surveys on the Juneau Icefield, Alaska   (Site not responding. Last check: 2007-09-22)
The Crevasse Zone, GPS glacier surface movement and elevation surveys on the Juneau Icefield, Alaska
The Crevasse Zone is dedicated to the dissemination of GPS glacier movement,
At this time, The Crevasse Zone requires the use of a web browser that supports
crevassezone.org   (121 words)

 Crevasse Curtails NYANG LC-130 Takeoff
The $45 million plane remains at the Upstream D field site, 80 miles southwest of the Siple Dome camp, lodged in a crevasse that is estimated to be about 10 feet wide and "deep and dark," said Col. Rich Saburro, commander of Operation Deep Freeze.
To get a vehicle of that size to the site and near the opening of the crevasse will require several LC-130 landings at Upstream D. The area is laden with crevasses, and a team of investigators and mountaineers are searching for a safe landing site.
Due to the varied movement of the ice stream, which can be 10 to 100 times faster than the surrounding ice, enormous crevasse areas called shear margins form in the middle of these big stream zones.
www.firebirds.org /menu7/mnu7_p9.htm   (733 words)

 Restoration Approaches: Crevasse Splays   (Site not responding. Last check: 2007-09-22)
Where natural or artificial levees isolate deltaic wetlands from river-borne sediments, subsidence leads to wetland loss; that is, wetlands sink and are replaced by open-water habitat.
By breaching levees (digging a crevasse through the levee), river water can pass directly into subsided areas and, over time, deposit sediment that rebuilds lost wetlands.
Constructed crevasses and land gain in the Mississippi River delta.
www.ramsar.org /strp/strp_rest_appr_crevasse.htm   (197 words)

 La Crevasse employment opportuni
Travailler à La Crevasse est très exigeant et nous recherchons des gens qui souhaitent passer une saison à Champéry pour skier ou snowboarder et pas uniquement travailler...
We are only interested in those applicants with a Swiss or EC passport and who have bartending experience with a good command of French and English.
Working in La Crevasse is a demanding job, and we are looking for people who want to spend a season ripping in Champéry for the skiing and snowboarding and - not just for working.
www.la-crevasse.com /jobs.htm   (178 words)

 Crevasse rescue training and glacier skills course in British Columbia, Canada
The first day of the Crevasse Rescue course will be held in the training bluffs in Squamish, BC, about 1 hour drive north of Vancouver.
All the Instructors on our Crevasse Rescue courses Certified through the Association of Canadian Mountain Guides and are among many of the top Climbing instructors and guides in British Columbia.
The Crevasse Rescue Course is is designed to teach a variety of "tried and trusted" crevasse rescue techniques that are currently used in the Mountain Guiding industry.
www.themountainschool.com /mountaineering_crevasse_rescue.html   (883 words)

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