List of evidence for water on Mars |
List of evidence for water on Mars |
Feb 5 2013, 04:59 PM
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#16
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Newbie Group: Members Posts: 7 Joined: 24-July 07 Member No.: 2948 |
Does there exist a list of all the evidence of water on Mars, listed by spacecraft?
Ideally, it would be a list with a short description and a link to a story or news release. For example: Mars Global Surveyor: NASA Images Suggest Water Still Flows in Brief Spurts on Mars http://www.nasa.gov/mission_pages/mars/new...s-20061206.html Phoenix: NASA Spacecraft Confirms Martian Water, Mission Extended http://www.nasa.gov/mission_pages/phoenix/...x-20080731.html Opportunity: NASA Mars Rover Finds Mineral Vein Deposited by Water http://www.nasa.gov/mission_pages/mer/news/mer20111207.html I know I could spend some time and extend the list that I've started above, but if someone or some organization has already done it I'd hate to reinvent the wheel! Thank you. |
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Apr 12 2015, 12:41 AM
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#17
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Senior Member Group: Members Posts: 1057 Joined: 17-February 09 Member No.: 4605 |
A glacier is by definition dynamic. So are they claiming that the ice is still moving under regolith or are they identifying relict, now static deposits? The presence of huge mid to high latitude ice deposits was confirmed by Odyssey and much evidence of glaciation has been revealed over the years. If they have identified active glaciation under the insulating cover (movement of existing deposits under gravity but without any replenishment) then this is indeed a stunning discovery. Otherwise it is just a variation on a theme.
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Apr 17 2015, 10:36 AM
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#18
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Member Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336 |
If they have identified active glaciation under the insulating cover (movement of existing deposits under gravity but without any replenishment) then this is indeed a stunning discovery. Otherwise it is just a variation on a theme. You are right, and from the press release I was not able to determine if it was to be read as if they had found actual changes, though we now do have image resolution that would make it potentially possible to detect such movements. So I did not make any speculation but only listed the press release at first, but in the follow up post after marsbug I did mention the possibility of water under such glaciers since - at least on Earth - water lessen the friction in the underlying rocks, sand and gravel so that the glacier can move. Glaciers on Earth often ends with a flow of water, but I do not expect any such to reach the surface of Mars now these are buried. Perhaps it would be possible to detect an elevated level of humidity of water vapour to show that there's some water beneath. -Anyhow it seem that the paper is written by a post-doc, so it might indeed be a "variation of a theme", where she's testing the water in the scientific publication world for the first time. =) |
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