Expeditions
Early unsuccessful attempts to reach the South Magnetic 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 1839–43).
The first calculation of the magnetic inclination to locate the magnetic South Pole was made January 23, 1838 by the hydrographer Clément Adrien Vincendon-Dumoulin (fr), member of the Dumont d'Urville expedition in Antarctica and Oceania on the Corvettes "L'Astrolabe "and" Zélée "in 1837-1840, expedition who discovered the 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°15′S 155°09′E / 72.25°S 155.15°E / -72.25; 155.15.
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