Sif Mons
Generovaný 3D snímek sopky
Sif Mons je štítová sopka na povrchu Venuše, která se nachází v oblasti Eistla Regio (na souřadnicích 24°N, 352°E). Měření naznačují, že sopka je přibližně 2 km vysoká a základna má okolo 300 km v průměru. Z radarového mapování je možno pozorovat až 120 km dlouhé lávové proudy, které vycházejí z vrcholku sopky a stékají po svazích do nižších oblastí. Takto dlouhé lávové proudy napovídají, že vyvrhované magma bylo vysoce mobilní a mělo tedy nízkou viskozitu.[1] Na vrcholku se nachází kaldera s průměrem okolo 40 až 50 kilometrů.[2]
Sopka byla pojmenována po severské bohyni Sif.
Reference
- ↑ 33. Sif Mons Volcano, Venus [online]. [cit. 2009-03-15]. Dostupné online. (anglicky)
- ↑ Britannica.com - Venus and Volcanic features [online]. Britannica.com [cit. 2009-03-16]. Dostupné online. (anglicky)
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Sif Mons 3D.jpg
Sif Mons is displayed in this computer-simulated view of the surface of Venus. The viewpoint is located 360 kilometers (223 miles) north of Sif Mons at a height of 7.5 kilometers (4.7 miles) above the lava flows. Lave flows extend for hundreds of kilometers across the fractured plains shown in the foreground to the base of Sif Mons. The view is to the south. Sif Mons, a volcano with a diameter of 300 kilometers (186 miles) and a height of 2 kilometers (1.2 miles), appears in the upper half of the image. Magellan synthetic aperture radar data is combined with radar altimetry to produce a three-dimensional map of the surface. Rays, cast in a computer, intersect the surface to create a three-dimensional perspective view. Simulated color and a digital elevation map developed by the U.S. Geological Survey are used to enhance small-scale structure. The simulated hues are based on color images recorded by the Soviet Venera 13 and 14 spacecraft. The image was produced at the JPL Multimission Image Processing Laboratory and is a single frame from a video released at the March 5, 1991, JPL news conference.
Sif Mons is displayed in this computer-simulated view of the surface of Venus. The viewpoint is located 360 kilometers (223 miles) north of Sif Mons at a height of 7.5 kilometers (4.7 miles) above the lava flows. Lave flows extend for hundreds of kilometers across the fractured plains shown in the foreground to the base of Sif Mons. The view is to the south. Sif Mons, a volcano with a diameter of 300 kilometers (186 miles) and a height of 2 kilometers (1.2 miles), appears in the upper half of the image. Magellan synthetic aperture radar data is combined with radar altimetry to produce a three-dimensional map of the surface. Rays, cast in a computer, intersect the surface to create a three-dimensional perspective view. Simulated color and a digital elevation map developed by the U.S. Geological Survey are used to enhance small-scale structure. The simulated hues are based on color images recorded by the Soviet Venera 13 and 14 spacecraft. The image was produced at the JPL Multimission Image Processing Laboratory and is a single frame from a video released at the March 5, 1991, JPL news conference.