Kråsen Crevasse Field

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Kråsen Crevasse Field ( 71°48′S0°58′W / 71.800°S 0.967°W / -71.800; -0.967 Coordinates: 71°48′S0°58′W / 71.800°S 0.967°W / -71.800; -0.967 ) is a crevasse field about 15 nautical miles (30 km) long in the lower part of Jutulstraumen Glacier, in Queen Maud Land, Antarctica. It was mapped by Norwegian cartographers from surveys and air photos by the Norwegian–British–Swedish Antarctic Expedition (1949–52) and air photos by the Norwegian expedition (1958–59) and named Kråsen (the crop). [1]

Geographic coordinate system Coordinate system

A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.

Crevasse A deep crack, or fracture, in an ice sheet or glacier

A crevasse is a deep crack, or fracture, found in an ice sheet or glacier, as opposed to a crevice that forms in rock. 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.

Jutulstraumen Glacier is a large glacier in Queen Maud Land, Antarctica, about 120 nautical miles (220 km) long, draining northward to the Fimbul Ice Shelf between the Kirwan Escarpment, Borg Massif and Ahlmann Ridge on the west and the Sverdrup Mountains on the east. It was mapped by Norwegian cartographers from surveys and air photos by the Norwegian–British–Swedish Antarctic Expedition (1949–52) and air photos by the Norwegian expedition (1958–59) and named Jutulstraumen. More specifically jutulen are troll-like figures from Norwegian folk tales. The ice stream reaches speeds of around 4 metres per day near the coast where it is heavily crevassed.

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Ulendet Crevasses is a crevasse field about 7 miles (11 km) long in the Jutulstraumen Glacier, about 15 miles (24 km) northeast of Neumayer Cliffs in Queen Maud Land. Mapped by Norwegian cartographers from surveys and air photos by the Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949–1952), led by John Schjelderup Giæver and air photos by the Norwegian expedition (1958–59) and named Ulendet.

Explorers Range

Explorers Range is a large mountain range in the Bowers Mountains of Victoria Land, Antarctica, extending from Mount Bruce in the north to Carryer Glacier and McLin Glacier in the south. Named by the New Zealand Antarctic Place-Names Committee (NZ-APC) for the northern party of New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1963–64, whose members carried out a topographical and geological survey of the area. The names of several party members are assigned to features in and about this range. All of the geographical features listed below lie situated on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare.

Bond Glacier glacier in Antarctica

Bond Glacier is a steep, heavily crevassed glacier to the west of Ivanoff Head, flowing from the continental ice to Blunt Cove at the head of Vincennes Bay. It was mapped from air photos taken by U.S. Navy Operation Highjump (1946–47), and named by the Advisory Committee on Antarctic Names for Captain Charles A. Bond, U.S. Navy, commander of the expedition's Western Group.

Nupsskåka Valley is an ice-filled valley at the southwest side of Nupsskarvet Mountain in the Kurze Mountains of Queen Maud Land. Mapped from surveys and air photos by Norwegian Antarctic Expedition (1956–60) and named Nupsskåka.

The Jutulpløgsla Crevasses form a crevasse field halfway up Jutulstraumen Glacier, about 8 nautical miles (15 km) southeast of Nashornet Mountain, in Queen Maud Land, Antarctica. They were mapped by Norwegian cartographers from surveys and air photos by the Norwegian–British–Swedish Antarctic Expedition (1949–52) and from air photos by the Norwegian expedition (1958–59) and named Jutulpløgsla.

Jutulgryta Crevasses is a crevasse field about 12 nautical miles (22 km) long, at the east side of the mouth of Jutulstraumen Glacier in Queen Maud Land, Antarctica. It was mapped by Norwegian cartographers from surveys and air photos by the Norwegian–British–Swedish Antarctic Expedition (1949–52) and from air photos by the Norwegian expedition (1958–59) and named Jutulgryta.

Kubusdalen is an ice-filled valley between Trollslottet Mountain and Kubus Mountain in the Filchner Mountains of Queen Maud Land, Antarctica. It was plotted from surveys and air photos by the Sixth Norwegian Antarctic Expedition (1956–60) and named Kubusdalen in association with Kubus Mountain.

Styggebrekka Crevasses is a crevasse field near the center of Austreskorve Glacier, in the Muhlig-Hofmann Mountains of Queen Maud Land. Plotted from surveys and air photos by Norwegian Antarctic Expedition (1956–60) and named Styggebrekka.

Gygra Peak is a rock peak, 1,980 metres (6,500 ft) high, just west of Risen Peak in the Gjelsvik Mountains of Queen Maud Land, Antarctica. It was mapped from surveys and air photos by the Sixth Norwegian Antarctic Expedition (1956–60) and named Gygra.

Trollkjelen Crevasse Field is a crevasse field about 12 nautical miles (22 km) long in the Fimbul Ice Shelf, lying immediately off the northeast side of Trollkjelneset Headland in Queen Maud Land. Mapped by Norwegian cartographers from surveys and air photos by Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949–52) and air photos by the Norwegian expedition (1958–59) and named Trollkjelen.

Ellis Glacier glacier in Antarctica

Ellis Glacier is a glacier, 4 nautical miles (7 km) long, flowing north from Mount Walnum between Gillock Glacier and Jennings Glacier in the Sør Rondane Mountains of Antarctica. It was mapped by Norwegian cartographers in 1957 from air photos taken by U.S. Navy Operation Highjump, 1946–47, and named for Edwin E. Ellis, aerial photographer on Operation Highjump photographic flights in this area and other coastal areas between 14°E and 164°E.

Gavlpiggen Peak is a low, isolated peak 2 nautical miles (4 km) southwest of Klakknabben Peak, just north of the Kirwan Escarpment in Queen Maud Land, Antarctica. It was mapped by Norwegian cartographers from surveys and air photos by the Norwegian–British–Swedish Antarctic Expedition (1949–52) and from additional air photos (1958–59), and named Gavlpiggen.

The Hamarglovene Crevasses are a crevasse field in lower Vestreskorve Glacier just east of Hamaroya Mountain, in the Mühlig-Hofmann Mountains of Queen Maud Land, Antarctica. They were mapped from surveys and air photos by the Sixth Norwegian Antarctic Expedition (1956–60) and named Hamarglovene.

Mefjell Glacier glacier in Antarctica

Mefjell Glacier is a glacier, 5 nautical miles (9 km) long, flowing northwest into Gjel Glacier between Menipa Peak and Mefjell Mountain in the Sør Rondane Mountains of Antarctica. It was mapped by Norwegian cartographers in 1957 from air photos taken by U.S. Navy Operation Highjump, 1946–47, and named Mefjellbreen.

Huldreslottet Mountain is a prominent ice-free mountain that is the southernmost summit in the Borg Massif, Queen Maud Land, Antarctica. It was mapped by Norwegian cartographers from surveys and air photos by the Norwegian–British–Swedish Antarctic Expedition (1949–52) and named Huldreslottet.

Klevekampen Mountain is a large, mainly ice-free mountain 3 nautical miles (6 km) east of Kubus Mountain in the Filchner Mountains of Queen Maud Land, Antarctica. It was plotted from air photos by the Third German Antarctic Expedition (1938–39), was mapped from surveys and air photos by the Sixth Norwegian Antarctic Expedition (1956–60) and named Klevekampen. Aurkleven Cirque lies between Klevekampen and Kubus.

Hovdebrekka Slope is a crevassed ice slope several miles long which trends northeastward from Skeidshovden Mountain in the Wohlthat Mountains of Queen Maud Land, Antarctica. First photographed from the air by the Third German Antarctic Expedition (1938–39), it was mapped by Norwegian cartographers from surveys and air photos by the Sixth Norwegian Antarctic Expedition (1956–60) and named Hovdebrekka.

Kazanskaya Mountain is a mountain, 2,690 metres (8,830 ft) high, forming the northern end of Snøskalkegga Ridge in the Weyprecht Mountains of Queen Maud Land, Antarctica. It was discovered and plotted from air photos by the Third German Antarctic Expedition, 1938–39, and was mapped from air photos and surveys by the Sixth Norwegian Antarctic Expedition, 1956–60. It was remapped by the Soviet Antarctic Expedition, 1960–61, and possibly named after the Russian city of Kazan.

References

PD-icon.svg This article incorporates  public domain material from the United States Geological Survey document "Kråsen Crevasse Field" (content from the Geographic Names Information System ).

United States Geological Survey Scientific agency of the United States government

The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility.

Geographic Names Information System geographical database

The Geographic Names Information System (GNIS) is a database that contains name and locative information about more than two million physical and cultural features located throughout the United States of America and its territories. It is a type of gazetteer. GNIS was developed by the United States Geological Survey in cooperation with the United States Board on Geographic Names (BGN) to promote the standardization of feature names.