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Transverse crevasses, Chugach State Park, Alaska A crevasse is a deep crack that forms in a glacier or ice sheet. Crevasses form as a result of the movement and resulting stress associated with the shear stress generated when two semi-rigid pieces above a plastic substrate have different rates of movement.
A crevasse that forms on the upper portion of a glacier where the moving section pulls away from the headwall. beta Information on how to complete (or protect) a particular climbing route. See on-sight and flash. [1] [2] [3] beta break In sport climbing, a move on a climbing route other than the move originally intended by the route setter. In ...
A bergschrund is distinct from a randkluft (also called rimaye), which is a crevasse with one side formed by rock. The randkluft arises in part from the melting of the ice due to the presence of the warmer rock face. [2] However, a randkluft is sometimes called a bergschrund. [3] The French word rimaye encompasses both randklufts and bergschrunds.
A crevasse may be as deep as 45 m (148 ft) and as wide as 20 m (66 ft). [11] A crevasse may be covered, but not necessarily filled, by a snow bridge made of the previous years' accumulation and snow drifts. The result is that crevasses are rendered invisible, and extremely dangerous to anyone attempting to traverse a glacier. [12]
Crevasse – A deep crack, or fracture, in an ice sheet or glacier; Corrie – An amphitheatre-like valley formed by glacial erosion or cwm; Cove (mountain) – Small valley in the Appalachian Mountains between two ridge lines; Dirt cone – Depositional glacial feature of ice or snow with an insulating layer of dirt
Crevasse rescue (or crevasse-extraction) is a set of techniques in mountaineering where climbers use their equipment to pull a climber, who has just fallen into a crevasse, to safety. [1] Crevasse rescue is considered a core skill set in alpine climbing, but difficult to do efficiently. [1] [2] It is typically encountered by rope teams on ...
A fracture will sometimes form a deep fissure or crevice in the rock. Fractures are commonly caused by stress exceeding the rock strength, causing the rock to lose cohesion along its weakest plane. [1] Fractures can provide permeability for fluid movement, such as water or hydrocarbons.
UIAA-certified twin ropes. Rock-climbing equipment is broadly classed as Personal Protective Equipment (PPE). [7] The International Climbing and Mountaineering Federation (known as the UIAA) was an important early body—and the only body pre-1995—in setting standards for climbing equipment.