Ulendet Crevasses

Last updated April 01, 2019

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 (the rough ground).

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

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.

Neumayer Cliffs is a series of abrupt rock cliffs forming the northeast end of Kirwan Escarpment in Queen Maud Land. Discovered by the German Antarctic Expedition under Alfred Ritscher, 1938–39, and named for German geophysicist Georg von Neumayer. Surveyed by the Norwegian-British-Swedish Antarctic Expedition (NBSAE), 1949-52.

Coordinates: 72°51′S0°59′W / 72.850°S 0.983°W / -72.850; -0.983

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.

This article incorporates public domain material from the United States Geological Survey document "Ulendet Crevasses" (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.

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.

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