A glacier (US: / ˈ ɡ l eɪ ʃ ər /; UK: / ˈ ɡ l æ s i ər, ˈ ɡ l eɪ s i ər /) is a persistent body of dense ice that is constantly moving under its own weight.A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries.It acquires distinguishing features, such as crevasses and seracs, as it slowly flows and deforms under stresses induced by ...

A serac [needs IPA] (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 glacier travel.

A crevasse is a deep crack, that forms in a glacier or ice sheet that can be a few inches across to over 40 feet. 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.

The Alps cover 60% of Switzerland's total 41,285 square kilometres (15,940 sq mi) surface area, making it one of the most alpine countries. Despite the fact that Switzerland covers only 14% of the Alps total 192,753 square kilometres (74,422 sq mi) area, 48 out of 82 alpine four-thousanders are located in the Swiss Alps and practically all of the remaining 34 are within 20 kilometres …

Etymologie und Synonyme. Das ursprünglich schweizerdeutsche Wort Gletscher entwickelte sich aus romanischen Dialektformen (vgl. heutiges glačer im Wallis), die von vulgärlateinisch *glaciārium abstammen, welches von spätlateinisch glacia und lateinisch glaciēs („Eis“) abstammt.. In den Ostalpen ist vom Oberinntal bis zum Zillertal (Zamser Grund) die …

L’alpinisme est une pratique sportive consistant à effectuer des ascensions en haute montagne (et certains secteurs de moyenne montagne l'hiver) et qui repose sur différentes techniques de progression. L'alpinisme fait usage de techniques spécifiques et de savoir-faire qui permettent au pratiquant d'appréhender les risques inhérents à l'altitude et au milieu hostile dans lequel il ...

Pico de Orizaba, also known as Citlaltépetl (from Nahuatl citlal(in) = star, and tepētl = mountain), is an inactive stratovolcano, the highest mountain in Mexico and the third highest in North America, after Denali of Alaska in the United States and Mount Logan of Canada.Pico de Orizaba is also the highest volcanic summit in North America. It rises 5,636 metres (18,491 ft) above …

During the trekking, you will be able to see a variety of typical glacier features, such as deep cracks, blue moulins, huge seracs and turquoise ponds. At the end of the ice trekking, you will walk on the area around the glacier and the side moraine, from where you will be able to enjoy a panoramic view of Glaciar Perito Moreno, the mountains ...

A glacial lake outburst flood (GLOF) is a type of outburst flood caused by the failure of a dam containing a glacial lake.An event similar to a GLOF, where a body of water contained by a glacier melts or overflows the glacier, is called a jökulhlaup.The dam can consist of glacier ice or a terminal moraine.Failure can happen due to erosion, a buildup of water pressure, an avalanche …

On 18 April 2014, seracs on the western spur of Mount Everest failed, resulting in an ice avalanche that killed sixteen climbing Sherpas in the Khumbu Icefall.This was the same icefall where the 1970 Mount Everest disaster had taken place. Thirteen bodies were recovered within two days, while the remaining three were never recovered due to the great danger of …