- Martian geyser
Use dmy dates date August 2011 File Geysers on Mars.jpg thumb 200px Artist concept showing sand laden jets erupting from Martian geysers. Published by NASA artist Ron Miller artist and author Ron Miller . Image Moc2 166b msss.gif thumb 200px Dark dune spots Martian geysers are putative sites of small scale jet like eruptions that occur in the Planum Australe south polar region region of Mars during the spring thaw. Dark dune spots and spiders are the two most visible types of features ascribed to these eruptions. They are unlike any terrestrial geological phenomenon. The reflectance albedo , shapes and unusual spider appearance of these features have stimulated a variety of hypotheses about their origin, ranging from differences in frosting reflectance, to explanations involving biological processes. However, all current geophysical models assume some sort of geyser like activity on Mars . ref name Piqueux2003 ref name Manrubia ref name Kieffer2000 Cite journal first H. H. last Kieffer contribution Annual Punctuated CO sub 2 sub Slab ice and Jets on Mars. title Mars Polar Science 2000 year 2000 contribution url http www.lpi.usra.edu meetings polar2000 pdf 4095.pdf format PDF accessdate 6 September 2009 ref ref name Kieffer2003 Cite journal first Hugh H. Kieffer contribution Bhehavior of Solid CO title Third Mars Polar Science Conference 2003 year 2003 contribution url http www.lpi.usra.edu meetings polar2003 pdf 8083.pdf accessdate 6 September 2009 ref ref name Portyankina Cite journal contribution Simulations of Geyser Type Eruptions in Cryptic Region of Martian South title Fourth Mars Polar Science Conference editor first G. Portyankina year 2006 contribution url http www.lpi.usra.edu meetings polar2006 pdf 8040.pdf format PDF accessdate 11 August 2009 ref ref name clathrate Cite journal contribution Stratigraphy of Special Layers Transient Oones on Permeable Ones Examples title Lunar and Planetary Science XXXV 2004 editor first Sz. editor last B rczi year 2004 co ... more details
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