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• by Fezman92

  What are the things that look like canyons or something? #help #interesting #canyon

  Posted January 9, 2013 2:06 AM

• by mschwamb scientist, translator

  Those ridges are channels in the soil that are sculpted by carbon dioxide gas. These veins in the images are what we call "spiders" or araneiform . We're looking at the south pole of Mars where is an ice sheet of carbon dioxide on the surface. In the spring/ summer when the sun come up the sun heats the base of the ice sheet the ice sublimates on the bottom creating carbon dioxide gas that carves these channels or spider-like features. If the gas can exploit through cracks in the ice sheet the gas escapes into the atmosphere bringing along dust and dirt to the surface that we think get blown by surface binds into the beautiful fans we ask to mark or if no wind the blotches we ask you to map. Cheers, ~Meg

  Posted January 9, 2013 2:47 AM

• by Fezman92

  Thanks.

  Posted January 17, 2013 11:24 PM