A hanging glacier originates high on the wall of a glacial valley and descends only part of the way to the surface of the main glacier and abruptly stops, typically at a cliff. [1] Avalanching and icefalls are the mechanisms for ice and snow transfer to the valley floor below. [1]
Rock and icefall from a hanging glacier was responsible for triggering the Kolka-Karmadon rock ice slide in 2002, which killed 125 people. [2]
A valley is an elongated low area often running between hills or mountains, which typically contains a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers or streams over a very long period. Some valleys are formed through erosion by glacial ice. These glaciers may remain present in valleys in high mountains or polar areas.
The Beardmore Glacier in Antarctica is one of the largest valley glaciers in the world, being 200 km (125 mi) long and having a width of 40 km (25 mi). It descends about 2,200 m (7,200 ft) from the Antarctic Plateau to the Ross Ice Shelf and is bordered by the Commonwealth Range of the Queen Maud Mountains on the eastern side and the Queen Alexandra Range of the Central Transantarctic Mountains on the western. Its mouth is east of the Lennox-King Glacier. It is northwest of the Ramsey Glacier.
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.
Watkins Glen State Park is in the village of Watkins Glen, south of Seneca Lake in Schuyler County in New York's Finger Lakes region. The park's lower part is near the village, while the upper part is open woodland. It was opened to the public in 1863 and was privately run as a tourist resort until 1906, when it was purchased by New York State. Initially known as Watkins Glen State Reservation, the park was first managed by the American Scenic and Historic Preservation Society before being turned over to full state control in 1911. Since 1924, it has been managed by the Finger Lakes Region of the New York State Office of Parks, Recreation and Historic Preservation.
Skelton Glacier is a large glacier flowing from the polar plateau into the Ross Ice Shelf at Skelton Inlet on the Hillary Coast, south of Victoria Land, Antarctica.
The Darwin Glacier is a large glacier in Antarctica. It flows from the polar plateau eastward between the Darwin Mountains and the Cook Mountains to the Ross Ice Shelf. The Darwin and its major tributary the Hatherton are often treated as one system, the Darwin–Hatherton.
The Darwin Mountains are a group of mountains between the Darwin Glacier and Hatherton Glacier in Antarctica. They were discovered by the British National Antarctic Expedition (1901–04) and named for Major Leonard Darwin, at that time Honorary Secretary of the Royal Geographical Society. They are south of the Cook Mountains and north of the Britannia Range
The Taylor Glacier is a glacier in Antarctica about 35 nautical miles long, flowing from the plateau of Victoria Land into the western end of Taylor Valley, north of the Kukri Hills. It flows to the south of the Asgard Range. The middle part of the glacier is bounded on the north by the Inland Forts and on the south by Beacon Valley.
An icefall is a portion of certain glaciers characterized by relatively rapid flow and chaotic crevassed surface, caused in part by gravity. The term icefall is formed by analogy with the word waterfall, which is a similar phenomenon of the liquid phase but at a more spectacular speed. When ice movement of a glacier is faster than elsewhere, because the glacier bed steepens or narrows, and the flow cannot be accommodated by plastic deformation, the ice fractures, forming crevasses. Where two fractures meet, seracs can be formed. When the movement of the ice slows down, the crevasses can coalesce, resulting in the surface of the glacier becoming smoother.
Glacial landforms are landforms created by the action of glaciers. Most of today's glacial landforms were created by the movement of large ice sheets during the Quaternary glaciations. Some areas, like Fennoscandia and the southern Andes, have extensive occurrences of glacial landforms; other areas, such as the Sahara, display rare and very old fossil glacial landforms.
A serac 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.
The Kolka–Karmadon rock-ice slide occurred on the northern slope of the Mount Kazbek massif in North Ossetia–Alania on 20 September 2002, following a partial collapse of the Kolka Glacier. It started on the north-northeast wall of Mount Jimara, 4,780 m (15,680 ft) above sea level, and seriously affected the valley of Genaldon and Karmadon. The resulting avalanche and mudflow killed more than 120 people, including a film crew of 27 people, among them Russian actor and director Sergei Bodrov Jr. While this type of avalanche is not uncommon, this particular event is considered extraordinary because of several aspects.
Glacier morphology, or the form a glacier takes, is influenced by temperature, precipitation, topography, and other factors. The goal of glacial morphology is to gain a better understanding of glaciated landscapes and the way they are shaped. Types of glaciers can range from massive ice sheets, such as the Greenland ice sheet, to small cirque glaciers found perched on mountain tops. Glaciers can be grouped into two main categories:
Kolka Glacier is a glacier in North Ossetia, Russia, near Mount Kazbek, known for its surging properties. The most recent and the most powerful surge took place on 20 September 2002, resulting in the death of ca. 140 people.
Blue Glacier is a large glacier located to the north of Mount Olympus in the Olympic Mountains of Washington. The glacier covers an area of 1.7 sq mi (4.4 km2) and contains 580,000,000 cu ft (16,000,000 m3) of ice and snow in spite of its low terminus elevation. The glacier length has decreased from about 3.4 mi (5.5 km) in 1800 to 2.7 mi (4.3 km) in the year 2000. Just in the period from 1995 and 2006, Blue Glacier retreated 325 ft (99 m). Blue Glacier is also thinning as it retreats and between 1987 and 2009 the glacier lost 178 ft (54 m) of its depth near its terminus and between 32 and 48 ft in the uppermost sections of the glacier known as the accumulation zone.
Wright Upper Glacier is an ice apron at the upper west end of Wright Valley in the Asgard Range, Antarctica. It is formed by a glacier flowing east from the inland ice plateau. It was named by the Victoria University of Wellington Antarctic Expedition (VUWAE) (1958–59) for C. S. Wright, a member of the British Antarctic Expedition (1910–13), after whom the "Wright Glacier" was named.
Barwick Valley is an ice-free valley north of Apocalypse Peaks, extending from Webb Glacier to Victoria Valley in Victoria Land, Antarctica. A large part of the valley has been designated an Antarctic Specially Protected Area because of its pristine condition.
Kolka may refer to:
Karmadon (Genaldon) gorge is a gorge in North Ossetia. The Genaldon river of the Greater Caucasus mountain system flows in the gorge. In the upper reaches of the gorge there are two glaciers: Kolka and Mayli. It is located at altitudes from 750 m to 1200 m above sea level.
The Garden of Eden Ice Plateau is a large ice field on the western side of New Zealand's Southern Alps / Kā Tiritiri o te Moana. At over 9 km (5.6 mi) long, the Garden of Eden is one of the largest ice fields in New Zealand, along with the equally-sized Garden of Allah Ice Field which sits just to the north. The ice field is one of many geographic features in the area between the main divide of the Southern Alps and the Adams Range which share biblical names, a convention first established by the earliest explorers to the area. The Garden's remote location and difficult conditions make research difficult, especially with restrictions on helicopter landings imposed through the designation of the area as Adams Wilderness Area in 2003. Despite this, the ice plateau has been a popular destination for tramping groups for over 80 years, with access routes from both coasts and easily reachable areas once on the plateau itself.
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