9,919
edits
Difference between revisions of "South Magnetic Pole"
no edit summary
Westarctica (talk | contribs) (Source of article predominately from Wikipedia article on the South Magnetic Pole) |
Westarctica (talk | contribs) |
||
| (3 intermediate revisions by the same user not shown) | |||
| Line 4: | Line 4: | ||
For historical reasons, the "end" of a freely hanging magnet that points (roughly) north is itself called the "north pole" of the magnet, and the other end, pointing south, is called the magnet's "south pole". Because opposite poles attract, the Earth's South Magnetic Pole is physically actually a magnetic north pole (see also North Magnetic Pole § Polarity). | For historical reasons, the "end" of a freely hanging magnet that points (roughly) north is itself called the "north pole" of the magnet, and the other end, pointing south, is called the magnet's "south pole". Because opposite poles attract, the Earth's South Magnetic Pole is physically actually a magnetic north pole (see also North Magnetic Pole § Polarity). | ||
The South Magnetic Pole is constantly shifting due to changes in the Earth's magnetic field. As of 2005 it was calculated to lie at 64°31′48″S 137°51′36″E, placing it off the coast of [[Antarctica]], between [[Adélie Land]] and [[Wilkes Land]]. In 2015 it lay at 64.28°S 136.59°E (est). That point lies outside the [[Antarctic Circle]]. Due to polar drift, the pole is moving northwest by about 10 to 15 kilometers (6 to 9 mi) per year. Its current distance from the actual Geographic [[South | The South Magnetic Pole is constantly shifting due to changes in the Earth's magnetic field. As of 2005 it was calculated to lie at 64°31′48″S 137°51′36″E, placing it off the coast of [[Antarctica]], between [[Adélie Land]] and [[Wilkes Land]]. In 2015 it lay at 64.28°S 136.59°E (est). That point lies outside the [[Antarctic Circle]]. Due to polar drift, the pole is moving northwest by about 10 to 15 kilometers (6 to 9 mi) per year. Its current distance from the actual Geographic [[South Pole]] is approximately 2,860 km (1,780 mi). The nearest permanent science station is Dumont d'Urville Station. Wilkes Land contains a large gravitational mass concentration. | ||
==Expeditions== | ==Expeditions== | ||
Early unsuccessful attempts to reach the magnetic south pole included those of French explorer Dumont d'Urville (1837–40), American Charles Wilkes (expedition of 1838–42) and Briton James Clark Ross (expedition of 1839 to 1843). | [[File:MawsonMcKayDavid-sp.jpg|thumb|300px|Mawson, McKay, and David at the Magnetic South Pole]] | ||
Early unsuccessful attempts to reach the magnetic south pole included those of French explorer Dumont d'Urville (1837–40), American [[Charles Wilkes]] (expedition of 1838–42) and Briton [[James Clark Ross]] (expedition of 1839 to 1843). | |||
The first calculation of the magnetic inclination to locate the magnetic South Pole was made on January 23, 1838 by the hydrographer Clément Adrien Vincendon-Dumoulin (fr), a member of the Dumont d'Urville expedition in Antarctica and Oceania on the corvettes "L'Astrolabe" and "Zélée" in 1837-1840, which discovered Adelie Land. | The first calculation of the magnetic inclination to locate the magnetic South Pole was made on January 23, 1838 by the hydrographer Clément Adrien Vincendon-Dumoulin (fr), a member of the Dumont d'Urville expedition in Antarctica and Oceania on the corvettes "L'Astrolabe" and "Zélée" in 1837-1840, which discovered Adelie Land. | ||
On 16 January 1909 three men (Douglas Mawson, Edgeworth David, and Alistair Mackay) from Sir [[Ernest Shackleton]]'s Nimrod Expedition claimed to have found the South Magnetic Pole, which was at that time located on land. However, there is now some doubt as to whether their location was correct. The approximate position of the pole on 16 January 1909 was 72.25°S 155.15°E. | On 16 January 1909 three men ([[Douglas Mawson]], Edgeworth David, and Alistair Mackay) from Sir [[Ernest Shackleton]]'s Nimrod Expedition claimed to have found the South Magnetic Pole, which was at that time located on land. However, there is now some doubt as to whether their location was correct. The approximate position of the pole on 16 January 1909 was 72.25°S 155.15°E. | ||
==South Geomagnetic Pole== | ==South Geomagnetic Pole== | ||