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Surt is an active volcano on Jupiter's moon Io. It is located on Io's Jupiter-facing hemisphere at 45°13′N 336°29′W / 45.21°N 336.49°W. Surt consists of an oblong volcanic pit (known as a patera), 75 by 40 kilometres (47 by 25 mi) in diameter, surrounded by reddish sulfur and bright sulfur dioxide deposits to its south and east. The volcano was first observed in images acquired by the Voyager 1 spacecraft in March 1979. Later that year, the International Astronomical Union named this feature after Surtr, a leader of the fire giants of Norse mythology.

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  • Surt (volcan) (fr)
  • Surt (esogeologia) (it)
  • Surt (volcano) (en)
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  • Surt è un centro eruttivo presente sulla superficie di Io. (it)
  • Surt is an active volcano on Jupiter's moon Io. It is located on Io's Jupiter-facing hemisphere at 45°13′N 336°29′W / 45.21°N 336.49°W. Surt consists of an oblong volcanic pit (known as a patera), 75 by 40 kilometres (47 by 25 mi) in diameter, surrounded by reddish sulfur and bright sulfur dioxide deposits to its south and east. The volcano was first observed in images acquired by the Voyager 1 spacecraft in March 1979. Later that year, the International Astronomical Union named this feature after Surtr, a leader of the fire giants of Norse mythology. (en)
  • Surt est un volcan actif de Io un satellite galiléen de Jupiter. Il est situé dans l'hémisphère de Io qui fait face à Jupiter, au 45,21°N 336,49°W. Surt est un pic volcanique oblong (appelé patera), de 75 km par 40 km de diamètre, entouré par un dépôt de soufre rougeâtre et du dioxyde de soufre brillant sur ses cotes sud et est. Le volcan a été observé pour la première fois sur des images de la mission Voyager 1 en mars 1979. Plus tard dans l'année, l'Union astronomique internationale désigna ce volcan selon le nom du dieu des volcans d'Islandais, Surtr. (fr)
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  • Surt est un volcan actif de Io un satellite galiléen de Jupiter. Il est situé dans l'hémisphère de Io qui fait face à Jupiter, au 45,21°N 336,49°W. Surt est un pic volcanique oblong (appelé patera), de 75 km par 40 km de diamètre, entouré par un dépôt de soufre rougeâtre et du dioxyde de soufre brillant sur ses cotes sud et est. Le volcan a été observé pour la première fois sur des images de la mission Voyager 1 en mars 1979. Plus tard dans l'année, l'Union astronomique internationale désigna ce volcan selon le nom du dieu des volcans d'Islandais, Surtr. Différentes éruptions ont été observées sur Surt depuis sa découverte par Voyager 1. La première éruption observée par des astronomes depuis la terre suivit la découverte du volcanisme ioien eut lieu à Surt le 11 juin 1979, entre le passage de Voyager 1 et celui de Voyager 2. Quand Voyager 2 rencontra le système jovien en juillet 1979, l'éruption avait cessé, mais un dépôt frais, de 600km de large, fut observé aux environs de Surt. Ce dépôt de panache suggère un volcanisme actif de type peléen à Surt entre les deux visiteurs Voyager. De plus, une matière sombre, pouvant être de la lave extraite de l'éruption, était visible sur la moitié est de la patera. Quand la mission Galileo prit les premières images de la zone, en 1996, l'apparence de Surt et le terrain environnant avaient abandonné le noir, pour l'aspect vu par Voyager 1, suggérant encore une éruption de courte durée. Il y eut une nouvelle éruption de Surt le 22 février 2001, qui fut la plus puissante éruption volcanique jamais observée, en termes d'énergie expulsée (en watts) L'énergie totale produite par Surt (entre 7,2 et 8,4 × 1013 W) durant cette éruption avoisine la somme moyenne de l'ensemble des volcans ioiens. Malgré l'extrême violence de cette éruption, peu de modifications de surface furent observées par Galileo six mois plus tard, suggérant qu'elles avaient été entièrement dissipées. Des dépôts frais, rougeâtres et riches en soufre, furent vus sur les images acquises par Galileo en août 2001 au nord-est de Surt. (fr)
  • Surt is an active volcano on Jupiter's moon Io. It is located on Io's Jupiter-facing hemisphere at 45°13′N 336°29′W / 45.21°N 336.49°W. Surt consists of an oblong volcanic pit (known as a patera), 75 by 40 kilometres (47 by 25 mi) in diameter, surrounded by reddish sulfur and bright sulfur dioxide deposits to its south and east. The volcano was first observed in images acquired by the Voyager 1 spacecraft in March 1979. Later that year, the International Astronomical Union named this feature after Surtr, a leader of the fire giants of Norse mythology. Several eruptions have been observed at Surt since it was discovered by Voyager 1. The first eruption observed by Earth-based astronomers following the discovery of Ionian volcanism took place at Surt on June 11, 1979, between the Voyager 1 and Voyager 2 flybys. When Voyager 2 encountered the Jupiter system in July 1979, the eruption appeared to have ceased, but a fresh, 600 kilometres (370 mi)-wide plume deposit was observed surrounding Surt. This plume deposit was suggestive of an active Pele-type plume at Surt between the two Voyager encounters. In addition, dark material, thought to be lava erupted during the eruption, was visible within the eastern half of the patera. When the Galileo spacecraft first took images of the area in 1996, the appearance of Surt and the surrounding terrain had reverted to its appearance as seen by Voyager 1, again suggestive of a short-lived eruption. Surt erupted again on February 22, 2001 in the most powerful volcanic eruption ever observed, in terms of the amount of power (in watts) output by the eruption. The total power output observed at Surt (7.2–8.4 × 1013 W) during this eruption nearly matches the average total power output for all of Io's volcanoes. Despite such a violent eruption, few surface changes were observed in conjunction with the eruption in images acquired by Galileo six months later, suggesting that any changes had largely faded. Fresh, sulfur-rich, reddish deposits were seen in images acquired by Galileo in August 2001 to the northeast of Surt. (en)
  • Surt è un centro eruttivo presente sulla superficie di Io. (it)
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