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- Martian_polar_ice_caps abstract "The planet Mars has two permanent polar ice caps. During a pole's winter, it lies in continuous darkness, chilling the surface and causing the deposition of 25–30% of the atmosphere into slabs of CO2 ice (dry ice). When the poles are again exposed to sunlight, the frozen CO2 sublimes, creating enormous winds that sweep off the poles as fast as 400 km/h. These seasonal actions transport large amounts of dust and water vapor, giving rise to Earth-like frost and large cirrus clouds. Clouds of water-ice were photographed by the Opportunity rover in 2004.The caps at both poles consist primarily of water ice. Frozen carbon dioxide accumulates as a comparatively thin layer about one metre thick on the north cap in the northern winter only, while the south cap has a permanent dry ice cover about 8 m thick. The northern polar cap has a diameter of about 1000 km during the northern Mars summer, and contains about 1.6 million cubic km of ice, which if spread evenly on the cap would be 2 km thick. (This compares to a volume of 2.85 million cubic km (km3) for the Greenland ice sheet.) The southern polar cap has a diameter of 350 km and a thickness of 3 km. The total volume of ice in the south polar cap plus the adjacent layered deposits has also been estimated at 1.6 million cubic km. Both polar caps show spiral troughs, which recent analysis of SHARAD ice penetrating radar has shown are a result of roughly perpendicular katabatic winds that spiral due to the Coriolis Effect.The seasonal frosting of some areas near the southern ice cap results in the formation of transparent 1 m thick slabs of dry ice above the ground. With the arrival of spring, sunlight warms the subsurface and pressure from subliming CO2 builds up under a slab, elevating and ultimately rupturing it. This leads to geyser-like eruptions of CO2 gas mixed with dark basaltic sand or dust. This process is rapid, observed happening in the space of a few days, weeks or months, a rate of change rather unusual in geology—especially for Mars. The gas rushing underneath a slab to the site of a geyser carves a spider-like pattern of radial channels under the ice.".
- Martian_polar_ice_caps thumbnail Martian_north_polar_cap.jpg?width=300.
- Martian_polar_ice_caps wikiPageID "28203358".
- Martian_polar_ice_caps wikiPageLength "27136".
- Martian_polar_ice_caps wikiPageOutDegree "51".
- Martian_polar_ice_caps wikiPageRevisionID "695670238".
- Martian_polar_ice_caps wikiPageWikiLink Acidalia_Planitia.
- Martian_polar_ice_caps wikiPageWikiLink Arcadia_Planitia.
- Martian_polar_ice_caps wikiPageWikiLink Butte.
- Martian_polar_ice_caps wikiPageWikiLink Carbon_dioxide.
- Martian_polar_ice_caps wikiPageWikiLink Category:Extraterrestrial_bodies_of_ice.
- Martian_polar_ice_caps wikiPageWikiLink Category:Ice_caps.
- Martian_polar_ice_caps wikiPageWikiLink Category:Polar_regions_of_Mars.
- Martian_polar_ice_caps wikiPageWikiLink Category:Water_on_Mars.
- Martian_polar_ice_caps wikiPageWikiLink Chasma_Boreale.
- Martian_polar_ice_caps wikiPageWikiLink Cirrus_cloud.
- Martian_polar_ice_caps wikiPageWikiLink Climate_of_Mars.
- Martian_polar_ice_caps wikiPageWikiLink Coriolis_force.
- Martian_polar_ice_caps wikiPageWikiLink Deposition_(phase_transition).
- Martian_polar_ice_caps wikiPageWikiLink Deuterium.
- Martian_polar_ice_caps wikiPageWikiLink Dry_ice.
- Martian_polar_ice_caps wikiPageWikiLink Geographical_pole.
- Martian_polar_ice_caps wikiPageWikiLink Geyser_(Mars).
- Martian_polar_ice_caps wikiPageWikiLink Grand_Canyon.
- Martian_polar_ice_caps wikiPageWikiLink Gravity.
- Martian_polar_ice_caps wikiPageWikiLink Greenland_ice_sheet.
- Martian_polar_ice_caps wikiPageWikiLink HiRISE.
- Martian_polar_ice_caps wikiPageWikiLink Ice.
- Martian_polar_ice_caps wikiPageWikiLink Ice_cap.
- Martian_polar_ice_caps wikiPageWikiLink Katabatic_wind.
- Martian_polar_ice_caps wikiPageWikiLink Mars.
- Martian_polar_ice_caps wikiPageWikiLink Mars_Global_Surveyor.
- Martian_polar_ice_caps wikiPageWikiLink Mars_Reconnaissance_Orbiter.
- Martian_polar_ice_caps wikiPageWikiLink McMurdo_(crater).
- Martian_polar_ice_caps wikiPageWikiLink Mesa.
- Martian_polar_ice_caps wikiPageWikiLink NASA_Infrared_Telescope_Facility.
- Martian_polar_ice_caps wikiPageWikiLink Opportunity_(rover).
- Martian_polar_ice_caps wikiPageWikiLink Phoenix_(spacecraft).
- Martian_polar_ice_caps wikiPageWikiLink SHARAD.
- Martian_polar_ice_caps wikiPageWikiLink Sublimation_(phase_transition).
- Martian_polar_ice_caps wikiPageWikiLink Swiss_cheese_features.
- Martian_polar_ice_caps wikiPageWikiLink THEMIS.
- Martian_polar_ice_caps wikiPageWikiLink Triton_(moon).
- Martian_polar_ice_caps wikiPageWikiLink Utopia_Planitia.
- Martian_polar_ice_caps wikiPageWikiLink Vastitas_Borealis.
- Martian_polar_ice_caps wikiPageWikiLink Very_Large_Telescope.
- Martian_polar_ice_caps wikiPageWikiLink W._M._Keck_Observatory.
- Martian_polar_ice_caps wikiPageWikiLinkText "Mars' polar ice caps".
- Martian_polar_ice_caps wikiPageWikiLinkText "Martian polar ice cap".
- Martian_polar_ice_caps wikiPageWikiLinkText "Martian polar ice caps".
- Martian_polar_ice_caps wikiPageWikiLinkText "South polar ice cap".
- Martian_polar_ice_caps wikiPageWikiLinkText "ice caps".
- Martian_polar_ice_caps wikiPageWikiLinkText "icecaps".
- Martian_polar_ice_caps wikiPageWikiLinkText "north polar ice cap".
- Martian_polar_ice_caps wikiPageWikiLinkText "polar cap".
- Martian_polar_ice_caps wikiPageWikiLinkText "polar caps".
- Martian_polar_ice_caps align "right".
- Martian_polar_ice_caps caption "North polar cap in 1999".
- Martian_polar_ice_caps caption "South polar cap in 2000".
- Martian_polar_ice_caps direction "vertical".
- Martian_polar_ice_caps image "Martian north polar cap.jpg".
- Martian_polar_ice_caps image "South Polar Cap of Mars during Martian South summer 2000.jpg".
- Martian_polar_ice_caps width "200".
- Martian_polar_ice_caps wikiPageUsesTemplate Template:Main.
- Martian_polar_ice_caps wikiPageUsesTemplate Template:Mars.
- Martian_polar_ice_caps wikiPageUsesTemplate Template:Multiple_image.
- Martian_polar_ice_caps wikiPageUsesTemplate Template:Portal_bar.
- Martian_polar_ice_caps wikiPageUsesTemplate Template:Reflist.
- Martian_polar_ice_caps subject Category:Extraterrestrial_bodies_of_ice.
- Martian_polar_ice_caps subject Category:Ice_caps.
- Martian_polar_ice_caps subject Category:Polar_regions_of_Mars.
- Martian_polar_ice_caps subject Category:Water_on_Mars.
- Martian_polar_ice_caps type Planet.
- Martian_polar_ice_caps type Planet.
- Martian_polar_ice_caps comment "The planet Mars has two permanent polar ice caps. During a pole's winter, it lies in continuous darkness, chilling the surface and causing the deposition of 25–30% of the atmosphere into slabs of CO2 ice (dry ice). When the poles are again exposed to sunlight, the frozen CO2 sublimes, creating enormous winds that sweep off the poles as fast as 400 km/h. These seasonal actions transport large amounts of dust and water vapor, giving rise to Earth-like frost and large cirrus clouds.".
- Martian_polar_ice_caps label "Martian polar ice caps".
- Martian_polar_ice_caps sameAs Q3508956.
- Martian_polar_ice_caps sameAs Polární_čepičky_Marsu.
- Martian_polar_ice_caps sameAs Polkappen_des_Mars.
- Martian_polar_ice_caps sameAs Calottes_polaires_martiennes.
- Martian_polar_ice_caps sameAs m.0kvh_0h.
- Martian_polar_ice_caps sameAs Polárne_čiapočky_Marsu.
- Martian_polar_ice_caps sameAs Південна_полярна_шапка_(Марс).
- Martian_polar_ice_caps sameAs Q3508956.
- Martian_polar_ice_caps sameAs 火星極冠.
- Martian_polar_ice_caps wasDerivedFrom Martian_polar_ice_caps?oldid=695670238.
- Martian_polar_ice_caps depiction Martian_north_polar_cap.jpg.
- Martian_polar_ice_caps isPrimaryTopicOf Martian_polar_ice_caps.