|
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 "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 earthquake caused a block of serac to fall off Lenin Peak, trigge ... [...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 (or ''brush''). Twelve species belong to the monophyletic "true foxes" group of genus ''Vulpes''. Approximately another 25 current or extinct species are always or sometimes called foxes; these foxes are either part of the paraphyletic group of the South American foxes, or of the 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 hunting of foxes with packs of hounds, long an es ... [...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 of performing 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 econo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tangra Mountains
Tangra Mountains (in Bulgarian ''Тангра планина'', 'Tangra planina' \'tan-gra pla-ni-'na\) () form the principal mountain range of Livingston Island in the South Shetland Islands, Antarctica. The range had been nameless until 2001, when it was named after Tangra, "the name of the ancient Bulgarian god." Composite Antarctic Gazetteer. Tangra Mountains are long between |
Catalunyan Saddle
Catalunyan Saddle (Katalunska Sedlovina \ka-ta-'lun-ska se-dlo-vi-'na\) is a saddle of 1260 m height in the Friesland Ridge of the Tangra Mountains on Livingston Island, in the South Shetland Islands. The saddle is bounded by Lyaskovets Peak to the east and by Presian Ridge to the west. The saddle was named in honour of the Catalans Francesc Sàbat (q.v. Sàbat Hill) and Jorge Enrique (q.v. Enrique Hill) from Juan Carlos I Base who established the first route via the saddle to Mount Friesland on 30 December 1991. Location The saddle is located at which is 11.5 km east of St. Kliment Ohridski Base and 3.4 km south of Kuzman Knoll. Part of the saddle is occupied by an amazingly shaped ice-covered feature called the Sphinx. The saddle was occupied by a bivouac of the Bulgarian Tangra 2004/05 Survey team ( Lyubomir Ivanov and Doychin Vasilev) during 14 December–16 December 2004 and was mapped in 2005. Maps * L.L. Ivanov et al. Antarctica: Livingston Island an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tierra Del Fuego
Tierra del Fuego (, ; Spanish for "Land of the Fire", rarely also Fireland in English) is an archipelago off the southernmost tip of the South American mainland, across the Strait of Magellan. The archipelago consists of the main island, Isla Grande de Tierra del Fuego, with an area of , and a group of many islands, including Cape Horn and Diego Ramírez Islands. Tierra del Fuego is divided between Chile and Argentina, with the latter controlling the eastern half of the main island and the former the western half plus the islands south of Beagle Channel and the southernmost islands. The southernmost extent of the archipelago is just north of latitude 56°S. The earliest known human settlement in Tierra del Fuego dates to approximately 8,000 BC. Europeans first explored the islands during Ferdinand Magellan's expedition of 1520. ''Tierra del Fuego'' and similar namings stem from sightings of the many bonfires that the natives built. Settlement by those of European descent and ... [...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 Grou ... [...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 down 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 Glac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Of America
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Rainier
Mount Rainier (), indigenously known as Tahoma, Tacoma, Tacobet, or təqʷubəʔ, is a large active stratovolcano in the Cascade Range of the Pacific Northwest, located in Mount Rainier National Park about south-southeast of Seattle. With a summit elevation of , it is the highest mountain in the U.S. state of Washington and the Cascade Range, the most topographically prominent mountain in the contiguous United States, and the tallest in the Cascade Volcanic Arc. Due to its high probability of eruption in the near future, 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. According to the United States Geological Survey, "about 80,000 people and their homes are at risk in Mount Rainier's lahar-hazard zones." Between 1950 and 2018, 439,460 people climbed Mount Rainier. Appro ... [...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 ( da, Russells Gletscher) is a glacier in the Qeqqata municipality in central-western Greenland. It flows from the Greenland ice sheet ( kl, Sermersuaq) 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 ( da, Sandflugtdalen) 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. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
