Antarctic Circle

The Antarctic Circle is one of the five major circles (or parallels) of latitude that mark maps of the Earth. As of 22 January 2016, it runs 66°33′46.1″ south of the Equator.

Description

The area south of the Antarctic Circle is known as the Antarctic, and the zone immediately to the north is called the Southern Temperate Zone. The equivalent line of latitude in the northern hemisphere is the Arctic Circle.

The Antarctic Circle is the northernmost latitude in the Southern Hemisphere at which the sun can remain continuously above or below the horizon for 24 hours. Every place south of the Antarctic Circle experiences at least one whole day each year during which the sun does not set, and at least one whole day during which the sun does not rise. A period of twenty-four hours' continuous daylight occurs at least once per year as does a period of twenty-four hours' continuous night time. On the Antarctic Circle these events occur, in principle, exactly once per year, at the December and June solstices respectively. This happens because the Earth's axis is tilted, by approximately 23.5 degrees, relative to ecliptic (the plane of the Earth's orbit around the sun). At the southern winter solstice, the southern hemisphere is tilted away from the Sun to its maximum extent, and the region of permanent darkness reaches its northern limit; at the southern summer solstice, the southern hemisphere is tilted towards the Sun to its maximum extent, and the region of permanent sunlight reaches its northern limit.

Antarctic

The Antarctic (US English /æntˈɑːrktɪk/, UK English /ænˈtɑːrktɪk/ or /æntˈɑːrtɪk/ and /ænˈtɑːrtɪk/ or /ænˈɑːrtɪk/) is a polar region, specifically the region around the Earth's South Pole, opposite the Arctic region around the North Pole. The Antarctic comprises the continent of Antarctica and the ice shelves, waters, and island territories in the Southern Ocean situated south of the Antarctic Convergence. The region covers some 20% of the Southern Hemisphere, of which 5.5% (14 million km²) is the surface area of the continent itself.

Geography

The maritime part of the region constitutes the area of application of the international Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR), where for technical reasons the Convention uses an approximation of the Convergence line by means of a line joining specified points along parallels of latitude and meridians of longitude. The implementation of the Convention is managed through an international Commission headquartered in Hobart, Australia, by an efficient system of annual fishing quotas, licenses and international inspectors on the fishing vessels, as well as satellite surveillance.

Antarctic (ship)

Antarctic was a Swedish steamship built in Drammen, Norway in 1871. She was used on several research expeditions to the Arctic region and to Antarctica through 1898-1903. In 1895 the first confirmed landing on the mainland of Antarctica was made from this ship.

The ship

Antarctic was a barque with three masts and equipped with a steam engine. Build in 1871 at Holmen in Drammen under the name Cap Nor.

Initially Antarctic was used for seal hunting around Svalbard, Jan Mayen and Greenland, under that period the ship was captained by Gullik Jensen and among others Carsten Borchgrevink served on the ship.

In the early 1890s Norwegian ship-owner Svend Foyn wanted to expand his business to the Antarctic Ocean thereby needing capable ships. Foyn then purchased Cap Nor, made extensive repairs and after completion renamed the ship Antarctic. From 1893 the ship was deployed to the Antarctic ocean for whale hunting.

In 1897 the ship was purchased by Alfred Gabriel Nathorst for his planned expedition to Svalbard. Again extensive repairs were made prior to the expedition in 1898.