crevasse

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crevasse

(krəvăs`), large crack in the upper surface of a glacierglacier,
moving mass of ice that survives year to year, formed by the compacting of snow into névé and then into granular ice and set in motion outward and downward by the force of gravity and the stress of its accumulated mass.
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, 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.

crevasse

[krə′vas]
(geology)
An open, nearly vertical fissure in a glacier or other mass of land ice or the earth, especially after earthquakes.

crevasse

1. a deep crack or fissure, esp in the ice of a glacier
2. US a break in a river embankment
References in periodicals archive ?
The team practices rope work, crevasse rescue, navigation, weather observations, and polar camping skills.
The idea of falling into a crevasse was very real and scary as one cannot be sure of the chances of rescue and survival,' says Hetal.
A BRITISH climate scientist has been killed in Antarctica after his snowmobile plunged 100ft into a crevasse.
Acknowledging modern climate change, we now undertake the crossing not in the austral autumn as Shackleton did, but in the austral spring, when there is still ample winter snow to smooth over crevasses.
These must be sniffer dogs trained to seek out men fallen into crevasse or buried beneath the snow.
With Google Maps, you can instantly transport yourself to the top of these peaks and enjoy the sights without all the avalanches, rock slides, crevasses, and dangers from altitude and weather that mountaineers face.
They say the crevasses are opening up as the snow continues to melt, and they can be deep enough to cause injury or make it difficult for anyone to hear you calling for help.
Excavation work continued its full pace despite difficulties posed by seepage of the water at the sites, hazards of crevasses, cutting by water and sinking effects for digging equipment.
The vehicle weighs 350k and features radars to spot crevasses hidden under the ice.
Monte Rosa is said to host impressive ridges but can be dangerous for both rookie and experienced climbers because of sudden weather changes and crevasses in its glaciers.