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- Glaciers_on_Mars abstract "Glaciers, loosely defined as patches of currently or recently flowing ice, are thought to be present across large but restricted areas of the modern Martian surface, and are inferred to have been more widely distributed at times in the past. Lobate convex features on the surface known as viscous flow features and lobate debris aprons, which show the characteristics of non-Newtonian flow, are now almost unanimously regarded as true glaciers. However, a variety of other features on the surface have also been interpreted as directly linked to flowing ice, such as fretted terrain, lineated valley fill, concentric crater fill, and arcuate ridges. A variety of surface textures seen in imagery of the midlatitudes and polar regions are also thought to be linked to sublimation of glacial ice.Today, features interpreted as glaciers are largely restricted to latitudes polewards of around 30° latitude. Particular concentrations are found in the Ismenius Lacus quadrangle. Based on our current models of the Martian atmosphere, ice should not however be stable if exposed at the surface in the mid-Martian latitudes. It is thus thought that most glaciers must be covered with a layer of rubble or dust preventing free transfer of water vapor from the subliming ice into the air. This also suggests that at in Mars' relatively recent past, its climate must have been different in order to allow the glaciers to grow stably at these latitudes. This provides good independent evidence that the obliquity of Mars has changed significantly in the past, as independently indicated by modelling of Mars' orbital solutions. Evidence for past glaciation also appears on the peaks of several Martian volcanoes in the tropics.Like glaciers on Earth, glaciers on Mars are not pure water ice. Many are thought to contain substantial proportions of debris, and a substantial number are probably better described as rock glaciers. For many years, largely because of the modeled instability of water ice in the midlatitudes where the putative glacial features were concentrated, it was argued that almost all glaciers were rock glaciers on Mars. However, recent direct observations made by the SHARAD radar instrument on the Mars Reconnaissance Orbiter satellite have confirmed that at least some features are relatively pure ice, and thus, true glaciers. Some authors have also made claims that glaciers of solid carbon dioxide have formed on Mars under certain rare conditions.Some landscapes look just like glaciers moving out of mountain valleys on Earth. Some have a hollowed out appearance, looking like a glacier after almost all the ice has disappeared. What is left are the moraines—the dirt and debris carried by the glacier. The center is hollowed out because the ice is mostly gone. These supposed alpine glaciers have been called glacier-like forms (GLF) or glacier-like flows (GLF). Glacier-like forms are a later and maybe more accurate term because we cannot be sure the structure is currently moving. Another, more general term sometimes seen in the literature is viscous flow features (VFF).".
- Glaciers_on_Mars thumbnail Wide_view_of_glacier_showing_image_field.JPG?width=300.
- Glaciers_on_Mars wikiPageExternalLink watch?v=_sUUKcZaTgA.
- Glaciers_on_Mars wikiPageID "32967256".
- Glaciers_on_Mars wikiPageLength "38549".
- Glaciers_on_Mars wikiPageOutDegree "88".
- Glaciers_on_Mars wikiPageRevisionID "708325265".
- Glaciers_on_Mars wikiPageWikiLink 2001_Mars_Odyssey.
- Glaciers_on_Mars wikiPageWikiLink Arsia_Mons.
- Glaciers_on_Mars wikiPageWikiLink Atmosphere_of_Mars.
- Glaciers_on_Mars wikiPageWikiLink Axial_tilt.
- Glaciers_on_Mars wikiPageWikiLink Brain_terrain.
- Glaciers_on_Mars wikiPageWikiLink Casius_quadrangle.
- Glaciers_on_Mars wikiPageWikiLink Category:Extraterrestrial_bodies_of_ice.
- Glaciers_on_Mars wikiPageWikiLink Category:Geology_of_Mars.
- Glaciers_on_Mars wikiPageWikiLink Category:Glaciers.
- Glaciers_on_Mars wikiPageWikiLink Category:Surface_features_of_Mars.
- Glaciers_on_Mars wikiPageWikiLink Category:Water_on_Mars.
- Glaciers_on_Mars wikiPageWikiLink Climate_of_Mars.
- Glaciers_on_Mars wikiPageWikiLink Coloe_Fossae.
- Glaciers_on_Mars wikiPageWikiLink Concentric_crater_fill.
- Glaciers_on_Mars wikiPageWikiLink Deuteronilus_Mensae.
- Glaciers_on_Mars wikiPageWikiLink Eridania_quadrangle.
- Glaciers_on_Mars wikiPageWikiLink Fretted_terrain.
- Glaciers_on_Mars wikiPageWikiLink Geology_of_Mars.
- Glaciers_on_Mars wikiPageWikiLink Glacier.
- Glaciers_on_Mars wikiPageWikiLink Hecates_Tholus.
- Glaciers_on_Mars wikiPageWikiLink Hellas_Planitia.
- Glaciers_on_Mars wikiPageWikiLink Hellas_quadrangle.
- Glaciers_on_Mars wikiPageWikiLink HiWish_program.
- Glaciers_on_Mars wikiPageWikiLink Ismenius_Lacus_quadrangle.
- Glaciers_on_Mars wikiPageWikiLink Lineated_valley_fill.
- Glaciers_on_Mars wikiPageWikiLink Lobate_debris_apron.
- Glaciers_on_Mars wikiPageWikiLink Mars_Express.
- Glaciers_on_Mars wikiPageWikiLink Mars_Global_Surveyor.
- Glaciers_on_Mars wikiPageWikiLink Mars_Reconnaissance_Orbiter.
- Glaciers_on_Mars wikiPageWikiLink Martian_dichotomy.
- Glaciers_on_Mars wikiPageWikiLink Moreux_(crater).
- Glaciers_on_Mars wikiPageWikiLink Nilosyrtis_Mensae.
- Glaciers_on_Mars wikiPageWikiLink Non-Newtonian_fluid.
- Glaciers_on_Mars wikiPageWikiLink Olympus_Mons.
- Glaciers_on_Mars wikiPageWikiLink Pavonis_Mons.
- Glaciers_on_Mars wikiPageWikiLink Phaethontis_quadrangle.
- Glaciers_on_Mars wikiPageWikiLink Protonilus_Mensae.
- Glaciers_on_Mars wikiPageWikiLink Rock_glacier.
- Glaciers_on_Mars wikiPageWikiLink Terra_Sirenum.
- Glaciers_on_Mars wikiPageWikiLink Tharsis_quadrangle.
- Glaciers_on_Mars wikiPageWikiLink Water_on_Mars.
- Glaciers_on_Mars wikiPageWikiLink File:Wide_view_of_glacier_showing_image_field.JPG.
- Glaciers_on_Mars wikiPageWikiLinkText "Glaciers on Mars".
- Glaciers_on_Mars wikiPageWikiLinkText "glacial deposits".
- Glaciers_on_Mars wikiPageWikiLinkText "glacial dynamics".
- Glaciers_on_Mars wikiPageUsesTemplate Template:Mars.
- Glaciers_on_Mars wikiPageUsesTemplate Template:Portal_bar.
- Glaciers_on_Mars wikiPageUsesTemplate Template:Reflist.
- Glaciers_on_Mars wikiPageUsesTemplate Template:Wide_image.
- Glaciers_on_Mars subject Category:Extraterrestrial_bodies_of_ice.
- Glaciers_on_Mars subject Category:Geology_of_Mars.
- Glaciers_on_Mars subject Category:Glaciers.
- Glaciers_on_Mars subject Category:Surface_features_of_Mars.
- Glaciers_on_Mars subject Category:Water_on_Mars.
- Glaciers_on_Mars type Feature.
- Glaciers_on_Mars comment "Glaciers, loosely defined as patches of currently or recently flowing ice, are thought to be present across large but restricted areas of the modern Martian surface, and are inferred to have been more widely distributed at times in the past. Lobate convex features on the surface known as viscous flow features and lobate debris aprons, which show the characteristics of non-Newtonian flow, are now almost unanimously regarded as true glaciers.".
- Glaciers_on_Mars label "Glaciers on Mars".
- Glaciers_on_Mars sameAs Q5566163.
- Glaciers_on_Mars sameAs m.0h53f25.
- Glaciers_on_Mars sameAs مریخ_پر_برف_کے_تودے.
- Glaciers_on_Mars sameAs Q5566163.
- Glaciers_on_Mars wasDerivedFrom Glaciers_on_Mars?oldid=708325265.
- Glaciers_on_Mars depiction Wide_view_of_glacier_showing_image_field.JPG.
- Glaciers_on_Mars isPrimaryTopicOf Glaciers_on_Mars.