CRISM Corner |
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Guest_AlexBlackwell_* |
Sep 28 2006, 02:14 AM
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APL-Built Mineral-Mapping Imager Begins Mission at Mars
JHU/APL For Immediate Release September 27, 2006 See also A.J.S. Rayl's story at TPS. EDIT: I changed the topic title because, as I understand it from the press release, the cover was opened, not jettisoned. This post has been edited by AlexBlackwell: Sep 28 2006, 04:48 PM |
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Sep 27 2007, 03:54 AM
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Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
I will also point out that Mars is supposedly being pelted by meteors large enough to create secondaries at the rate of about one a month, according to an MGS study I read not too long ago.
Ejecta that lands on relatively flat ground will create secondary craters or just deposit clods of debris on generally flat surfaces. They'll cause landslides on steep enough slopes -- and small landslides create gullies. I don't totally buy this theory, unfortunately, since it would statistically tend to create gullies with origin points of varying altitude up a given slope, and we tend to see gullies with consistent origin points along visible contacts in the slope walls. But it is one mechanism that undoubtedly does create gullies on Martian slopes, so it would be remiss not to recognize it. -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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