Back At Larry's Lookout |
Back At Larry's Lookout |
Guest_Sunspot_* |
May 18 2005, 06:29 PM
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#1
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Guests |
Some pretty complex driving by the look of it:
http://qt.exploratorium.edu/mars/spirit/fo...E0P1214R0M1.JPG Now this is odd: http://qt.exploratorium.edu/mars/spirit/na...E0P0617R0M1.JPG It looks like some of the rocks have slid down the dune |
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May 20 2005, 05:17 PM
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#2
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Solar System Cartographer Group: Members Posts: 10173 Joined: 5-April 05 From: Canada Member No.: 227 |
I don't really think the RAT caused the slump feature. The ratting is a fairly gentle process (and was it only brushing anyway?... can't recall now, but they are limiting the RAT use as it wears out) - and it was quite a distance away from this spot, not right on top of it. And the Viking examples which I mentioned above suggest to me that it's not really so unusual. (see page 38, "The Martian Landscape" , NASA SP-425, for the first and best-seen Viking example).
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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May 20 2005, 08:40 PM
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#3
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Member Group: Members Posts: 701 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
QUOTE (Phil Stooke @ May 20 2005, 05:17 PM) I don't really think the RAT caused the slump feature. The ratting is a fairly gentle process (and was it only brushing anyway?... can't recall now, but they are limiting the RAT use as it wears out) - and it was quite a distance away from this spot, not right on top of it. And the Viking examples which I mentioned above suggest to me that it's not really so unusual. (see page 38, "The Martian Landscape" , NASA SP-425, for the first and best-seen Viking example). Phil I admit it seems unlikely that ratting the other side of the outcrop would cause this slump (they did grind, not just brush, on Larry's Lookout -see Sol 419 Hazcam image). And I remember the Viking 1 slumps, at least one of which was far enough from the lander that the lander can't reasonably have caused it. I'm just struck by how this looks *so* fresh, and how I can't recall seeing any examples of more degraded slumps previously. It is striking that Spirit's wheels digging into the slope have not precipitated further slumping, though maybe the slope is more susceptible to failure by a push from behind than by digging from below. |
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