Trioen Nunataks

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Trioen Nunataks ( 72°25′S3°59′W / 72.417°S 3.983°W / -72.417; -3.983 Coordinates: 72°25′S3°59′W / 72.417°S 3.983°W / -72.417; -3.983 ) is an isolated group of three nunataks about 8 miles (13 km) northwest of Borg Mountain 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 named Trioen (the trio).

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.

Nunatak Exposed, often rocky element of a ridge, mountain, or peak not covered with ice or snow within an ice field or glacier

A nunatak is an exposed, often rocky element of a ridge, mountain, or peak not covered with ice or snow within an ice field or glacier. They are also called glacial islands. Examples are natural pyramidal peaks. When rounded by glacial action, smaller rock promontories may be referred to as rognons.

Borg Mountain is a large, flattish, ice-topped mountain with many exposed rock cliffs, standing at the northern end of Borg Massif in Queen Maud Land.

PD-icon.svg This article incorporates  public domain material from the United States Geological Survey document "Trioen Nunataks" (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.


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