The power of HiRISE |
The power of HiRISE |
Oct 9 2008, 08:04 PM
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Busy preparing a new Outreach talk here, and have been trying to find some images to illustrate the "power" of HiRISE for a non-technical audience. Playing about with - sorry, carefully looking at the images on - the addictive Mars Global Data site I found a cute landslide on Xanthe Terra that does the trick nicely. Using the IAS Viewer you can zoom in on the boulders carried down the slope by the landslide and even see cracks and splits in them... unbelievable...!
Anyone else got any fave examples? -------------------- |
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Oct 6 2010, 09:54 PM
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
'Dry water' has just been in the news: http://www.telegraph.co.uk/science/science...-dry-water.html
Apparently if you subject the powder to pressure you can squeeze the water out of it. What I don't know is whether this form of water is more resistant to sublimation under Martian conditions than ordinary ice. It does make me wonder though if something akin to 'dry water' could be present in Martian sediments. If so then the transient appearance of ice in avalanche debris might not be out of the question. |
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Oct 10 2010, 04:44 AM
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
'Dry water' ..has been around since 1968. It is the "potential" application extensions that made news. Official ACS press release here. It is basically a hydrogel, except it is encapsulated in silica rather than in a polymer. (Think of it as teensy drops of water surrounded by a silica coating.) The silica prevents evaporation, but allows the diffusion in of gases through the silica barrier. (I'm guessing the strength of the water network prevents the individual water molecules from easily escaping.) I'm not sure how easily this could be formed naturally on Mars.... -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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