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- Rampart_crater abstract "Rampart craters are a specific type of Martian impact crater which are accompanied by distinctive fluidized ejecta features. A Martian Rampart crater displays an ejecta with a low ridge along its edge. Usually, rampart craters show a lobate outer margin, as if material moved along the surface, rather than flying up and down in a ballistic trajectory. The flows sometimes are diverted around small obstacles, instead of falling on them. The ejecta look as if they move as a mudflow. Some of the shapes of Rampart craters can be duplicated by shooting projectiles into mud. Although rampart craters can be found all over Mars, the smaller ones are only found in the high latitudes where ice is predicted to be close to the surface. It seems that the impact has to be powerful enough to penetrate to the level of the subsurface ice. Since ice is thought to be close to the surface in latitudes far from the equator, it does not take too strong of an impact to reach the ice level. So, based on images from the Viking program in the 1970s, it is generally accepted that rampart craters are evidence of ice or liquid water beneath the surface of Mars. The impact melts or boils the water in the subsurface producing a distinctive pattern of material surrounding the crater. The Phoenix lander confirmed the existence of large amounts of water ice in the northern regions of Mars. This finding was predicted by theory and was measured from orbit by the Mars Odyssey instruments, so the idea that rampart crater size shows the depth to ice was confirmed by other space probes. The image below from the Phoenix lander shows ice that was exposed by the descent engines.".
- Rampart_crater thumbnail Mars_rampart_crater.jpg?width=300.
- Rampart_crater wikiPageExternalLink ch7.htm.
- Rampart_crater wikiPageExternalLink Reiss_LPI_2005_3012.pdf.
- Rampart_crater wikiPageExternalLink display.cfm?IM_ID=824.
- Rampart_crater wikiPageExternalLink 396.htm.
- Rampart_crater wikiPageID "4665377".
- Rampart_crater wikiPageLength "2880".
- Rampart_crater wikiPageOutDegree "11".
- Rampart_crater wikiPageRevisionID "680443861".
- Rampart_crater wikiPageWikiLink 2001_Mars_Odyssey.
- Rampart_crater wikiPageWikiLink Category:Geology_of_Mars.
- Rampart_crater wikiPageWikiLink Category:Impact_craters.
- Rampart_crater wikiPageWikiLink Category:Impact_craters_on_Mars.
- Rampart_crater wikiPageWikiLink Category:Planetary_science.
- Rampart_crater wikiPageWikiLink Ejecta.
- Rampart_crater wikiPageWikiLink Fluid.
- Rampart_crater wikiPageWikiLink Impact_crater.
- Rampart_crater wikiPageWikiLink Mars.
- Rampart_crater wikiPageWikiLink Mars_Odyssey.
- Rampart_crater wikiPageWikiLink Viking_program.
- Rampart_crater wikiPageWikiLink File:Mars_rampart_crater.jpg.
- Rampart_crater wikiPageWikiLinkText "Rampart crater".
- Rampart_crater wikiPageWikiLinkText "rampart crater".
- Rampart_crater hasPhotoCollection Rampart_crater.
- Rampart_crater wikiPageUsesTemplate Template:Mars-stub.
- Rampart_crater wikiPageUsesTemplate Template:Reflist.
- Rampart_crater subject Category:Geology_of_Mars.
- Rampart_crater subject Category:Impact_craters.
- Rampart_crater subject Category:Impact_craters_on_Mars.
- Rampart_crater subject Category:Planetary_science.
- Rampart_crater hypernym Type.
- Rampart_crater type Feature.
- Rampart_crater type Object.
- Rampart_crater type Sub-discipline.
- Rampart_crater comment "Rampart craters are a specific type of Martian impact crater which are accompanied by distinctive fluidized ejecta features. A Martian Rampart crater displays an ejecta with a low ridge along its edge. Usually, rampart craters show a lobate outer margin, as if material moved along the surface, rather than flying up and down in a ballistic trajectory. The flows sometimes are diverted around small obstacles, instead of falling on them. The ejecta look as if they move as a mudflow.".
- Rampart_crater label "Rampart crater".
- Rampart_crater sameAs Rampart_(krater).
- Rampart_crater sameAs m.0cg5s7.
- Rampart_crater sameAs Q7290026.
- Rampart_crater sameAs Q7290026.
- Rampart_crater wasDerivedFrom Rampart_crater?oldid=680443861.
- Rampart_crater depiction Mars_rampart_crater.jpg.
- Rampart_crater isPrimaryTopicOf Rampart_crater.