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Post Conjunction: Santa Maria to Cape York, The Journey to 'Spirit Point'
fredk
post Jul 11 2011, 11:58 PM
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My guess: CY will be much lower, and much less sharply peaked. I'm thinking a subtle "shelf" on the inner slope.
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lyford
post Jul 12 2011, 02:32 AM
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QUOTE (MarkG @ Jul 11 2011, 11:18 AM) *
I made up a little tune a while back called "Cresting the Rise", and I thought this might be a good thing to share with the UMSF Rover fans...
Something to listen to while we wait...

Nice work Mark! Makes me feel like we're really rolling now! smile.gif


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Stu
post Jul 12 2011, 03:45 AM
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Oh, me too Fred, that's a purely fanciful view smile.gif


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CosmicRocker
post Jul 12 2011, 06:06 AM
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Hey, we've seen the HiRise Digital Elevation Model in its various manifestations. Cape York is a shelf generally below the surrounding elevations. The highest part, based on shadows, seems to be the north side. But it seems mostly to be a shelf within Endeavour's basin.


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centsworth_II
post Jul 12 2011, 06:46 AM
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QUOTE (CosmicRocker @ Jul 12 2011, 02:06 AM) *
...it seems mostly to be a shelf within Endeavour's basin.
I really think the difference between calling Cape York a shelf on the wall of Endeavour and a low, exposed portion of Endeavour's rim is important. I think the latter is the case. Yes, Cape York appears more shelf-like than peak-like but I think it is appearance only, in relation to the Meridiani sediments, and not the true morphological identity of Cape York. Maybe we can just call it a scenic overlook. smile.gif

Cape York as a portion of Endeavour's rim nearly covered by Meridiani layers. This is what the situation looks like to me.
Attached Image


Cape York as a shelf on the interior of Endeavour's rim. I see no evidence of this. Where is the rim peak to the West of Cape York? I do not think one could have been there and eroded away. And even if that were the case, that would make Cape York part of the the current rim peak.
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Just my two Centsworth.
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Stu
post Jul 12 2011, 07:36 AM
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I don't think anyone is saying CY *isn't* part of the rim; all these references to 'shelves' relate to its location and visual appearance, not its geology, as I've read them anyway.


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Stu
post Jul 12 2011, 08:50 AM
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My little red flag is far behind us now - Oppy drove over it, then turned round and skidded over it a few times more for good measure before carrying on - but today's pancams show something interesting (gif image below, please click), just wonder if anyone has any thoughts..?

Attached Image


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jamescanvin
post Jul 12 2011, 09:05 AM
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Hmm, possible I suppose, but my gut feeling is that Cape York won't appear so high against the far rim (i.e. we'll see a lot more of the far rim than we ever have before, before we see any of Cape York.) Too early to say for sure, tomorrows drive should tell us more about the location of that bump.


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Stu
post Jul 12 2011, 09:14 AM
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Thanks, that's what I thought too, James. The peaks of CY will look a lot sharper and more obvious once they clear the horizon. I think that after "Approach Crater" the terrain is quite bumpy, with a few mounds and rises that are going to fool us. I'm using that big farside crater as a guide, too. The sooner we see that thing clear the horizon and start to climb higher, the better our chances of seeng CY will be.


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Phil Stooke
post Jul 12 2011, 10:19 AM
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Centsworth - this is more like the real topography:

Attached Image


Phil


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MoreInput
post Jul 12 2011, 10:59 AM
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Phil: So we are just at the left side of your picture, and all the next drives we will really get better and better views. I think this will be fantastic days / weeks the next time, even if Cape York refused to be a gigantic mountain...

The crater wall crater seems now to be getting bigger, so we should be now just before the peak of this ridge on our last trek to CY.


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Stu
post Jul 12 2011, 11:56 AM
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Hmmm...

Although the "Bump" lines up nicely with the spot on the horizon where CY's peaks should appear, I don't think it is anything to do with CY. Looking at the ground around and ahead of "Approach Crater", using the IASViewer, there's a filled-in crater just a little further up the road from Approach, with some quite tall dunes in it, which may be our Bump..? And a little farther ahead, but further over, there's a kind of a ridge/dyke feature which may give us false readings as we appriach...

Attached Image


Note: all just "having fun doing it" speculation. Any scientific accuracy is purely coincidental... laugh.gif

Looking at the Cape York peaks in IAS it seems to me we're looking for a "twin peak" to pop up above the horizon, with a small peak to the left of a larger one.

Attached Image


Fascinating part of the journey, absolutely fascinating... smile.gif





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centsworth_II
post Jul 12 2011, 12:31 PM
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QUOTE (Phil Stooke @ Jul 12 2011, 06:19 AM) *
Centsworth - this is more like the real topography:
In Philovision! Thanks! smile.gif
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climber
post Jul 12 2011, 02:15 PM
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QUOTE (Stu @ Jul 12 2011, 01:56 PM) *
we're looking for a "twin peak"..... Fascinating part of the journey, absolutely fascinating... smile.gif

You mean the So..journer wink.gif biggrin.gif


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ElkGroveDan
post Jul 12 2011, 02:45 PM
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I'm going to just jump right ahead of everyone pointing out how hard Cape York is to see, and declare that we won't see Cape York until Opportunity is parked on its summit and extends the MI looking downward. Even then it will need to be a stack of 12 over-exposed images..

There. I should have been a Yorkshireman.


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