File:Arsia mons2.jpg
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Summary
| Description | Title : Arsia Mons Spiral Cloud Description : One of the benefits of the Mars Global Surveyor (MGS) Mars Orbiter Camera(MOC) Extended Mission is the opportunity to observe how the planet's weather changes during a second full martian year. This picture of Arsia Mons was taken June 19, 2001; southern spring equinox occurred the same day. Arsia Mons is a volcano nearly large enough to cover the state of New Mexico. On this particular day (the first day of Spring), the MOC wide angle cameras documented an unusual spiral-shaped cloud within the 110 km(68 mi) diameter caldera--the summit crater--of the giant volcano. Because the cloud is bright both in the red and blue images acquired by the wide angle cameras, it probably consisted mostly of fine dust grains. The cloud's spin may have been induced by winds off the inner slopes of the volcano's caldera walls resulting from the temperature differences between the walls and the caldera floor, or by a vortex as winds blew up and over the caldera. Similar spiral clouds were seen inside the caldera for several days; we don't know if this was a single cloud that persisted throughout that time or one that regenerated each afternoon. Sunlight illuminates this scene from the left/upper left. |
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| Source | http://nix2.larc.nasa.gov/info?id=PIA03470 |
| Author | NASA/JPL |
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This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA03470 and Alternate ID: MOC2-302. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Other languages:
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:13, 7 May 2006 | | 838 × 838 (185 KB) | ComputerHotline | '''Title :''' Arsia Mons Spiral Cloud '''Description :''' One of the benefits of the Mars Global Surveyor (MGS) Mars Orbiter Camera(MOC) Extended Mission is the opportunity to observe how the planet's weather changes during a second full martian year. Th |
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