Paolo's Plunge, First dip into Victoria |
Paolo's Plunge, First dip into Victoria |
Sep 13 2007, 02:25 PM
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#31
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Member Group: Members Posts: 133 Joined: 3-June 06 From: the jungle of Nool Member No.: 799 |
sol 1291 L257 1x4:
Without at least a 1/3 overlap I don't think a dust compensation flat field mask will work on the 8 bit JPG data. I hope that the Cornell Pancam Images will have a dust correction. |
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Sep 13 2007, 02:28 PM
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#32
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Senior Member Group: Moderator Posts: 4279 Joined: 19-April 05 From: .br at .es Member No.: 253 |
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Sep 13 2007, 03:12 PM
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#33
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Member Group: Members Posts: 279 Joined: 19-August 07 Member No.: 3299 |
How can the entry surface of Duck Bay is so smooth, no boulders or stones? It seems that something has ironed it.
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Sep 13 2007, 03:45 PM
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#34
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Senior Member Group: Members Posts: 2920 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
How can the entry surface of Duck Bay is so smooth, no boulders or stones? It seems that something has ironed it. Endurance was as smooth as this, wasn'it? -------------------- |
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Sep 13 2007, 05:17 PM
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#35
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Senior Member Group: Members Posts: 1582 Joined: 14-October 05 From: Vermont Member No.: 530 |
The smoothness of the bays versus the boulder-strewn capes... not sure there is any consensus there!
Look for the discussions on "capes" and "bays" that are the terms used to describe Victoria Crater's scalloped appearance. |
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Sep 13 2007, 08:18 PM
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#36
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Member Group: Members Posts: 279 Joined: 19-August 07 Member No.: 3299 |
Endurance was as smooth as this, wasn'it? Yes, indeed, Endurance's lateral surface is similar to Victoria's bay (no Capes). This case puzzles me about these stones were laid down as smooth as possible. The only idea that is arised in my mind: "When that place was so hot soon after an asteroid had impacted. It was like a magma and the left stones from the asteroid impact were able to accommodate to the Mars' gravity." |
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Sep 13 2007, 08:41 PM
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#37
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Member Group: Members Posts: 547 Joined: 1-May 06 From: Scotland (Ecosse, Escocia) Member No.: 759 |
We discussed this issue, the apparently planed smoothness of the slopes irrespective of the irregular composition of mixed boulders and matrix, quite a while back and I can't yet find where. But the answer we came to was aeons of erosion by wind and wind-borne dust grains, slowly grinding the jumbled boulders and ejecta mass down into a plane surface. It was deposited lumpy and irregular by the impact, then slowly smoothed down over an enormous period of time.
Kenny |
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Sep 13 2007, 08:42 PM
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#38
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Member Group: Members Posts: 384 Joined: 4-January 07 Member No.: 1555 |
An alternative hypothesis for Victoria is that the bays were long ago smoothed by wind abrasion, whereas the steeper capes are still shedding debris. Victoria may well be older than Endurance, most of which, except where Oppy entered, was relatively steep.
- HDP Don Edit: Ooops. Kenny, we both answered "wind" at the same time. Obviously, I was referring to post #36 above. Incidentally, one could equally well (probably better) argue that Endurance is older than Victoria, and the morphological differences mainly result from Endurance's smaller size. |
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Sep 13 2007, 08:57 PM
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#39
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Newbie Group: Members Posts: 3 Joined: 13-August 07 Member No.: 3201 |
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Sep 13 2007, 09:38 PM
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#40
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Member Group: Members Posts: 239 Joined: 20-April 05 From: Bruxelles, Belgium Member No.: 278 |
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Sep 13 2007, 09:39 PM
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#41
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
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Sep 13 2007, 09:40 PM
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#42
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Member Group: Members Posts: 239 Joined: 20-April 05 From: Bruxelles, Belgium Member No.: 278 |
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Sep 13 2007, 10:36 PM
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#43
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Junior Member Group: Members Posts: 52 Joined: 24-May 06 Member No.: 784 |
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Sep 14 2007, 06:49 AM
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#44
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Member Group: Members Posts: 239 Joined: 20-April 05 From: Bruxelles, Belgium Member No.: 278 |
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Sep 14 2007, 07:58 AM
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#45
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Senior Member Group: Moderator Posts: 4279 Joined: 19-April 05 From: .br at .es Member No.: 253 |
What about the slope angle?
What I've got from the mobility data tells me the rover is on a (at least) 15º slope. |
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