More Wet Gullies |
More Wet Gullies |
Apr 12 2010, 09:12 PM
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#1
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Member Group: Members Posts: 444 Joined: 1-July 05 From: New York City Member No.: 424 |
A new paper argues that HiRISE photos show evidence for recent short-lived surface water flows. Neat pictures on Phil Plait's site (my source for the news).
It would be interesting to learn if there was any MGS coverage of the same area. TTT |
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Dec 13 2013, 12:59 AM
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#2
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Solar System Cartographer Group: Members Posts: 10164 Joined: 5-April 05 From: Canada Member No.: 227 |
I can't yet see these features as anything but dry granular flows. I'm willing to be shown I am wrong...
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Dec 13 2013, 11:57 AM
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#3
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Member Group: Members Posts: 401 Joined: 5-January 07 From: Manchester England Member No.: 1563 |
I can't yet see these features as anything but dry granular flows. I'm willing to be shown I am wrong... Phil I'm more or less of the same mind: I don't see any specific reason why they shouldn't be caused by some kind of brine...but I see no reason why they should be, brine just being one of a great many alternative explanations. I think this story is really riding in the wake of the discovery of ancient habitable conditions at Curiositie's site. -------------------- |
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Dec 13 2013, 04:14 PM
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#4
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Member Group: Members Posts: 656 Joined: 20-April 05 From: League City, Texas Member No.: 285 |
... I don't see any specific reason why they shouldn't be caused by some kind of brine...but I see no reason why they should be, brine just being one of a great many alternative explanations. ... Agreed. This may be troublesome to sort-out. Even given remote measurements of associated water vapor, I could envision a dust-fall yielding a water vapor release due to the exposure of subsurface ice/brine, rather than being directly associated with a liquid seep. It seems we would need to image actual flowing water to resolve this, and I think even MRO lacks that level of resolution. |
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