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Sérac
A serac () (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. Seracs are found within an icefall, often in large numbers, or on ice faces on the lower edge of a hanging glacier. Notable examples of the overhanging glacier edge type are well-known obstacles on some of the world's highest mountains, including K2 at "Bottleneck (K2), The Bottleneck" and Kanchenjunga on the border of India and Nepal. Significant seracs in the Alps are found on the northeast face of Piz Roseg, the north face of the Dent d'Hérens, and the north face of Lyskamm. Incidents * On a 1969–1970 Japanese expedition to Mount Everest, Kyak Tsering was killed by a falling serac. * In 1990, an Lenin Peak disaster, earthquake caused a bloc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fox Glacier, NZ
Foxes are small-to-medium-sized omnivorous mammals belonging to several genera of the family Canidae. They have a flattened skull; upright, triangular ears; a pointed, slightly upturned snout; and a long, bushy tail ("brush"). Twelve species belong to the monophyly, monophyletic "true fox" group of genus ''Vulpes''. Another 25 current or extinction, extinct species are sometimes called foxes – they are part of the paraphyly, paraphyletic group of the South American foxes or an outlying group, which consists of the bat-eared fox, gray fox, and island fox. Foxes live on every continent except Antarctica. The most common and widespread species of fox is the red fox (''Vulpes vulpes'') with about 47 recognized subspecies. The global distribution of foxes, together with their widespread reputation for cunning, has contributed to their prominence in popular culture and folklore in many societies around the world. The Fox hunting, hunting of foxes with packs of hounds, long an est ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2014 Mount Everest Ice 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 in attempting such an expedition. Many Sherpas were angered by what they saw as the Nepalese government's meager offer of compensation to victims' families, and threatened a protest or strike. On 22 April, the Sherpas announced they would not work on Everest for the remainder of 2014 as a mark of respect for the victims. Background Guide employment on Mount Everest A Sherpa who works as a porter specialised in high-altitude work including rope fixing on Mount Everest typically earns about US$125/day per climb. Most come from climbing families, are raised on stories of wealth from climbs, with relatively few other econom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cordillera Darwin
The Cordillera Darwin is an extensive mountain range mantled by an ice field that is located in Chile. Description Cordillera Darwin is located in the southwestern portion of Isla Grande de Tierra del Fuego, entirely within the Chilean territory. It is part of the longest Andes range and includes the highest mountains in Tierra del Fuego, with elevations reaching over ; The ice field of the Cordillera Darwin covers an area greater than . The Darwin Range extends in a west–east direction from the Monte Sarmiento (located in the vicinity of Magdalena Channel) to Yendegaia Valley. It is bounded by the Almirantazgo Fjord on the north and the Beagle Channel on the south. The range is named after Charles Darwin and is the most important feature of Alberto de Agostini National Park, which includes a number of well-known glaciers including the Marinelli Glacier, which is now under prolonged retreat as of 2008. In October 2011, a team of French mountaineers from the French Army's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bossons Glacier
The Bossons Glacier is one of the larger glaciers of the Mont Blanc massif of the Alps, found in the Chamonix valley of Haute-Savoie ''département'', south-eastern France. It is fed from icefields lying on the northern side of Mont Blanc, and descends close to the Aiguille du Midi and ends on the southern side of the Arve valley, close to the town of Chamonix. It has the largest altitudinal drop of all the alpine glaciers in Europe, and formerly extended much further down the valley than it does today. It is now approximately 7.5 km long, with a surface area of approximately 10 km2. In the 17th century the Bossons glacier extended right down into Chamonix, reaching the settlement of Le Fouly, engulfing farmland, barns and houses. Local bishops were called upon to exorcise the demons within the glacier. In 1777 the traveller and correspondent, William Coxe, observed in his letters that ''"we mounted by the side of the glacier of Bosson, to les Murailles de Glace, so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Of America
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five major island territories and various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's third-largest land area and third-largest population, exceeding 340 million. Its three largest metropolitan areas are New York, Los Angeles, and Chicago, and its three most populous states are California, Texas, and Florida. Paleo-Indians migrated from North Asia to North America over 12,000 years ago, and formed various civilizations. Spanish colonization led to the establishment in 15 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Rainier
Mount Rainier ( ), also known as Tahoma, is a large active stratovolcano in the Cascade Range of the Pacific Northwest in the United States. The mountain is located in Mount Rainier National Park about south-southeast of Seattle. With an officially recognized summit elevation of at the Columbia Crest, it is the highest mountain in the U.S. state of Washington (state), Washington, the most Topographic prominence, topographically prominent mountain in the contiguous United States, and the tallest in the Cascade Volcanic Arc. Due to its high probability of an eruption in the near future and proximity to a Seattle metropolitan area, major urban area, Mount Rainier is considered one of the most dangerous volcanoes in the world, and it is on the Decade Volcano list. The large amount of glacial ice means that Mount Rainier could produce massive lahars that could threaten the entire Puyallup River valley and other river valleys draining Mount Rainier, including the Carbon River, Car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winthrop Glacier
The Winthrop Glacier is a large glacier on the northeastern side of Mount Rainier in Washington. Named after Theodore Winthrop, the body of ice covers 3.5 mile2 (9.1 km2) and has a volume of 18.5 billion feet3 (523 million m3). Starting at over at the Columbia Crest, the glacier heads north and descends steeply over the uneven topography of Rainier. Another glacier, the Emmons Glacier is directly connected to this glacier up to the Steamboat Prow. After passing the Prow, the glaciers split up; the Emmons heads east-northeastward and the Winthrop continues northeast. As the terrain becomes flatter, the Winthrop glacier becomes heavily rock-covered when it terminates in a forest at about . Meltwater from the glacier drains into the White River. Debris flows The glacier is one of four on Mount Rainier that are known to have released debris flows. Similar flows have stemmed from the Nisqually, Kautz, and South Tahoma glaciers as well. See also *List of glaciers A glacier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firn
__NOTOC__ Firn (; from Swiss German "last year's", cognate with ''before'') is partially compacted névé, a type of snow that has been left over from past seasons and has been recrystallized into a substance denser than névé. It is ice that is at an intermediate stage between snow and glacial ice. Firn has the appearance of wet sugar, but has a hardness that makes it extremely resistant to shovelling. Its density generally ranges from 0.35 g/cm3 to 0.9 g/cm3, and it can often be found underneath the snow that accumulates at the head of a glacier. Snowflakes are compressed under the weight of the overlying snowpack. Individual crystals near the melting point are semiliquid and slick, allowing them to glide along other crystal planes and to fill in the spaces between them, increasing the ice's density. Where the crystals touch, they bond together, squeezing the air between them to the surface or into bubbles. In the summer months, the crystal metamorphosis can occur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russell Glacier (Greenland)
Russell Glacier () is a glacier in the Qeqqata municipality in central-western Greenland. It flows from the Greenland ice sheet () in the western direction. The front of the glacier is located east of Kangerlussuaq. It is active, advancing every year, and, due to easy access from Kangerlussuaq, it remains a popular place for tourists to visit. Geography The ice sheet outflow ending in Russell Glacier is bounded on the north by the tundra highland of Isunngua and on the south by an exposed, barren, flattened ridge of Akuliarusiarsuk. Several meltwater outflow streams from the base of the glacier form the Akuliarusiarsuup Kuua river, which flows west-southwest towards Kangerlussuaq. The sandur basin of the outflow river forming the valley of the same name () is very shallow; shallow enough to form quicksand fields several kilometers long. Directly to the west of the glacier is a large lake, the 2x10km Aajuitsup Tasia. Due to the minimal height differential, its waters are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Col
The South Col is a col between Mount Everest and Lhotse, the highest and fourth-highest mountains in the world, respectively. The South Col is typically swept by high winds, leaving it free of significant snow accumulation. Since 1950 (when Tibet was closed), most Everest expeditions have left from Nepal and gone via the southeast ridge and the South Col (instead of via the North Col). When climbers attempt to climb Everest from the southeast ridge in Nepal, their final camp (usually Camp IV) is located on the South Col. History The South Col was first reached on 12 May 1952 by Aubert, Lambert, and Flory of Edouard Wyss-Dunant's 1952 Swiss Mount Everest Expedition, Swiss Mount Everest Expedition which failed to reach the summit. The following year, when Mount Everest was first climbed, Wilfrid Noyce and the Sherpa people, Sherpa Annullu were the first climbers on the expedition to reach the col. According to John Hunt, Baron Hunt, John Hunt, the expedition leader: Climbin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khumbu Icefall
The Khumbu Icefall is located at the head of the Khumbu Glacier and the foot of the Western Cwm. It lies at an elevation of on the Nepali slopes of Mount Everest, not far above Base Camp and southwest of the summit. The icefall is regarded as one of the most dangerous sections of the South Col route to Everest's summit. Overview The Khumbu Glacier moves an estimated down the flank of Mt. Everest every day. Ice entering the fall takes approximately 4.3 years to emerge at the base, which is lower and away horizontally. The speed of ice flow and the precipitous elevation drop create a bergschrund (ice berg shoulder), characterized at the top by massive transverse blocks that calve off the upper glacier, creating gaping 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 rate ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marmolada Glacier
The Marmolada Glacier () is located on the mountain Marmolada in the province of Belluno, Italy. Geography Marmolada Glacier is the only one in the Dolomites section of the Alps. During World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ..., the front line between Austrian and Italian forces ran over Marmolada, and Austrian soldiers built quarters in glacier tunnels, forming an "ice city" of considerable size. A World War I museum, ''Museo della Grande Guerra in Marmolada'', is located in the valley below the glacier. Incidents On 3 July 2022, a serac collapse killed 11 mountaineers. References Glaciers of Italy Geography of Trentino Glaciers of the Alps Marmolada {{Italy-glacier-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
