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Victoria Crater Vs Big Crater, Visibility
djellison
post Mar 29 2005, 12:06 PM
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I'm not really asking a question really - just posing an issue smile.gif




Mars Pathfinder was about 2.2km from 'Big Crater' which was about 1.5km wide.

Now - Victoria is only half that size - but it says something about local topography that we cant see it from where we are now - about 3-4km from it.

Doug
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deglr6328
post Apr 2 2005, 01:05 AM
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sad.gif Sadly, I think Victoria crater will be somewhat disappointing.... not asthetically (it will doubtless be beautiful perched on the rim), but scientifically. Endurance crater was ~20 m deep and Victoria crater appears to be ~20-30 m deep, but we've climbed about 10 m or so since leaving endurance, so we'll be seeing the exact same stratigraphy as we saw in endurance! Oh well, maybe "etched terrain" will reveal some surprises. unsure.gif
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ElkGroveDan
post Apr 2 2005, 03:55 PM
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QUOTE (deglr6328 @ Apr 2 2005, 01:05 AM)
sad.gif  Sadly, I think Victoria crater will be somewhat disappointing.... not asthetically (it will doubtless be beautiful perched on the rim), but scientifically. Endurance crater was ~20 m deep  and Victoria crater appears to be ~20-30 m deep, but we've climbed about 10 m or so since leaving endurance, so we'll be seeing the exact same stratigraphy as we saw in endurance! Oh well, maybe "etched terrain" will reveal some surprises.  unsure.gif
*


I don't believe that is a safe assumption. Rarely is depositional bedding so uniform as to preclude the need for studies over a wide area. Endurance told a wonderful stratigraphic story, but by no means was it a complete story.

Travel through the American Southwest and you will discover the same layers as you find in the Grand Canyon hundreds of miles away, but in varying thicknesses and at different elevations. Where there are disconformoties in one place, a geologic record exists to fill those gaps in other places.

Victoria is far enough away from Endurance to provide a necessary glimpse into a broader sample of the depositional history of the region. Moreover, since it is larger (did someone say five times?) then it will provide more opportunities for more nice clean exposed layers like Burns Cliff at varyious depths. At five times the diameter, Victoria will offer 20-30 times the circumference, and hence miles of new geologic observing that wasn't available at Endurance. You can bet the geologists won't be planning any summer vacations this year.


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dvandorn
post Apr 2 2005, 08:44 PM
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QUOTE (ElkGroveDan @ Apr 2 2005, 09:55 AM)
Victoria is far enough away from Endurance to provide a necessary glimpse into a broader sample of the depositional history of the region.  Moreover, since it is larger (did someone say five times?) then it will provide more opportunities for more nice clean exposed layers like Burns Cliff at varyious depths.  At five times the diameter, Victoria will offer 20-30 times the circumference, and hence miles of new geologic observing that wasn't available at Endurance.  You can bet the geologists won't be planning any summer vacations this year.
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More like fall and winter vacations. Considering how much larger the dunes become between here and Victoria, and considering how much of the evaporite layer is exposed (and just begging to be analyzed) within the etched terrain, my guess is that it will be September or October before we actually reach Victoria.

-the other Doug


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Posts in this topic
- djellison   Victoria Crater Vs Big Crater   Mar 29 2005, 12:06 PM
- - chris   QUOTE (djellison @ Mar 29 2005, 12:06 PM)I...   Mar 29 2005, 01:08 PM
- - djellison   I think it may be that some of the etched terrain ...   Mar 29 2005, 01:36 PM
|- - Stephen   QUOTE (djellison @ Mar 29 2005, 01:36 PM)I th...   Mar 31 2005, 10:12 AM
- - wyogold   here is the elevation link posted by alen. It loo...   Mar 30 2005, 09:56 AM
|- - chris   QUOTE (wyogold @ Mar 30 2005, 09:56 AM)here i...   Mar 30 2005, 11:08 AM
|- - cIclops   much more detail, including the previous image and...   Mar 30 2005, 11:47 AM
- - djellison   Vostok always looked flat to me - MOC imagery show...   Mar 31 2005, 10:37 AM
|- - Stephen   QUOTE (djellison @ Mar 31 2005, 10:37 AM)Vost...   Apr 5 2005, 12:39 AM
- - wyogold   Here is an image from the nasa report with the ele...   Mar 31 2005, 02:01 PM
- - Tman   Thanks for the deliverance from the PDF format. ...   Mar 31 2005, 03:05 PM
- - djellison   I make the main flat part -1385m, the etched terra...   Mar 31 2005, 03:57 PM
- - Tman   Right, 5m steps. I don't know how/why I got 2...   Mar 31 2005, 05:40 PM
- - deglr6328   Sadly, I think Victoria crater will be somewhat di...   Apr 2 2005, 01:05 AM
|- - john_s   QUOTE (deglr6328 @ Apr 2 2005, 01:05 AM)...   Apr 2 2005, 12:28 PM
|- - ElkGroveDan   QUOTE (deglr6328 @ Apr 2 2005, 01:05 AM)...   Apr 2 2005, 03:55 PM
|- - centsworth_II   QUOTE (ElkGroveDan @ Apr 2 2005, 10:55 AM)...   Apr 2 2005, 06:03 PM
|- - centsworth_II   QUOTE (ElkGroveDan @ Apr 2 2005, 10:55 AM) ...   Apr 2 2005, 06:06 PM
||- - CosmicRocker   QUOTE (centsworth_II @ Apr 2 2005, 12:06 PM)Q...   Apr 4 2005, 04:36 AM
|- - dvandorn   QUOTE (ElkGroveDan @ Apr 2 2005, 09:55 AM)Vic...   Apr 2 2005, 08:44 PM
|- - David   I was wondering if Victoria might end up being, vi...   Apr 3 2005, 02:05 AM
- - djellison   No - Victoria is very big, very deep, and very muc...   Apr 3 2005, 08:58 AM
- - Pando   I think it's likely that the climb in altitude...   Apr 4 2005, 04:59 AM
|- - dvandorn   QUOTE (Pando @ Apr 3 2005, 10:59 PM)I think i...   Apr 4 2005, 05:48 AM
- - Pando   Looking at it again I think you are right - Victor...   Apr 4 2005, 07:10 AM
|- - dvandorn   QUOTE (Pando @ Apr 4 2005, 01:10 AM)I don...   Apr 4 2005, 06:15 PM
|- - wyogold   QUOTE (dvandorn @ Apr 4 2005, 06:15 PM)QUOTE ...   Apr 5 2005, 03:56 AM
|- - dvandorn   QUOTE (wyogold @ Apr 4 2005, 09:56 PM)If thes...   Apr 5 2005, 07:04 AM
- - djellison   The figures I've heard are 10m of strata at En...   Sep 9 2005, 01:51 PM


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