EDWARD ADRIAN WILSON (1872-1912)
Mount Erebus (3, 794 m - 12, 448ft)
Antarctica
In Mount Erebus from Hut Point, March 1911, Watercolour,
Royal Geographical Society Museum, London
Royal Geographical Society Museum, London
The mountain
Mount Erebus (3, 794 m - 12, 448ft), not to be confused with Mount Elbrus is the second-highest volcano in Antarctica (after Mount Sidley) and the southernmost active volcano on Earth. It is the sixth highest ultra mountain on an island, located on Ross Island, which is also home to three inactive volcanoes: Mount Terror, Mount Bird, and Mount Terra Nova.
The volcano has been active since c. 1.3 million years ago and is the site of the Mount Erebus Volcano Observatory run by the New Mexico Institute of Mining and Technology.
Mount Erebus was discovered on January 27, 1841 (and observed to be in eruption) by polar explorer Sir James Clark Ross who named it and its companion, Mount Terror, after his ships, Erebus and Terror (which were later used by Sir John Franklin on his disastrous Arctic expedition). Erebus is a dark region in Hades in Greek mythology. Present with Ross on the Erebus was the young Joseph Hooker, future president of the Royal Society and close friend of Charles Darwin. Erebus was an Ancient Greek primordial deity of darkness, the son of Chaos.
Mount Erebus is classified as a polygenetic stratovolcano. The bottom half of the volcano is a shield and the top half is a stratocone. The composition of the current eruptive products of Erebus is anorthoclase-porphyritic tephritic phonolite and phonolite, which are the bulk of exposed lava flow on the volcano. Erebus is the world's only presently erupting phonolite volcano.
Researchers spent more than three months during the 2007–08 field season installing an unusually dense array of seismometers around Mount Erebus to listen to waves of energy generated by small, controlled blasts from explosives they buried along its flanks and perimeter and to record scattered seismic signals generated by lava lake eruptions and local ice quakes. By studying the refracted and scattered seismic waves, the scientists produced an image of the uppermost (top few km) of the volcano to understand the geometry of its "plumbing" and how the magma rises to the lava lake. These results demonstrated a complex upper-volcano conduit system with appreciable upper-volcano magma storage to the northwest of the lava lake at depths hundreds of meters below the surface.
The artist
Edward Adrian Wilson, nicknamed "Uncle Bill" was an English physician, polar explorer, natural historian, painter and ornithologist. Wilson took part in two British expeditions to Antarctica, the Discovery Expedition (1901-1904) and the tragic Terra Nova Expedition (1907-1912), both under the leadership of Scott.
Dr. Edward A. Wilson is widely regarded as one of the finest artists ever to have worked in the Antarctic. Sailing with Captain Scott aboard 'Discovery' (1901-1904), he became the last in a long tradition of 'exploration artists' from an age when pencil and water-colour were the main methods of producing accurate scientific records of new lands and animal species. He combined scientific, topographical and landscape techniques to produce accurate and beautiful images of the last unknown continent. Such was the strength of his work that it also helped to found the tradition of modern wildlife painting. In particular Wilson captured the essence of the flight and motion of Southern Ocean sea-birds on paper.
Returning with Captain Scott aboard 'Terra Nova' (1910-1913) as Chief of Scientific Staff, he continued to record the continent and its wildlife with extraordinary deftness. Chosen to accompany Captain Scott to the South Pole, his last drawings are from one of the most famous epic journeys in exploration history. Along with his scientific work, Wilson's pencil recorded the finding of Roald Amundsen's tent at the South Pole by Captain Scott. Wilson died, along with the other members of the British Pole Party, during the return journey, in March 1912. The drawings and paintings were created at considerable personal cost in the freezing conditions in which Wilson worked. He often suffered severely from the cold whilst sketching and also from snow-blindness, or sunburn of the eye. They provide a remarkable testament to one of the great figures of the heroic age of Antarctic exploration. The book has been produced as a companion volume to 'Edward Wilson's Nature Notebooks' by two of Wilson's great nephews, to mark the centenary of his death.
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Un blog de Francis Rousseau