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Crevasse. 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. The resulting intensity of the shear stress causes a breakage along the faces.
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 ...
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 glaciers.
Crevasse splay. A crevasse splay is a sedimentary fluvial deposit which forms when a stream breaks its natural or artificial levees and deposits sediment on a floodplain. A breach that forms a crevasse splay deposits sediments in similar pattern to an alluvial fan deposit. Once the levee has been breached the water flows out of its channel.
Three Pinnacles. The Three Pinnacles are a formation of steep rocks along the northeast ridge on Mount Everest. They were one of the longest unsolved challenges in high-level mountaineering, but have now been successfully climbed. The rocks are located at around 7,800, 8,100 and 8,200 metres above sea level (height of base of pinnacle) and are ...
A serac (/ sɛˈrækˌˈsɛræk /) (from Swiss French sérac) is a block or column of glacial ice, often formed by intersecting crevasses on a glacier. Commonly house-sized or larger, they are dangerous to mountaineers, since they may topple with little warning. Even when stabilized by persistent cold weather, they can be an impediment to ...
Bergschrund. A bergschrund (from the German for mountain cleft) is a crevasse that forms where moving glacier ice separates from the stagnant ice or firn above. [1] It is often a serious obstacle for mountaineers, who sometimes abbreviate "bergschrund" to "schrund". Bergschrunds extend to the bedrock and can have a depth of well over 100 metres ...
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