Perseverance valley |
Perseverance valley |
Jul 4 2017, 05:11 AM
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#1
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Member Group: Members Posts: 363 Joined: 13-April 06 From: Malta Member No.: 741 |
Time for another topic, me thinks.
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Jul 13 2017, 01:43 AM
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#2
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Member Group: Members Posts: 866 Joined: 15-March 05 From: Santa Cruz, CA Member No.: 196 |
figuring this "Perseverance Valley" thread should populate with said content...are we there yet??
Here are some stereo views from sol4786 images of presumably water-carved topography downslope of the spillway (ICE didn't deal well with the contrast scope so at left is anaglyph of 3 pairs, crosseye of left portion, crosseye of right portion, at right is a parellel of most lumpy section). |
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Jul 13 2017, 11:22 PM
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#3
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Member Group: Members Posts: 941 Joined: 4-September 06 From: Boston Member No.: 1102 |
The pancam images for the past several days show a ground texture that looks like it is cemented together and really interesting textures. Maybe some of the image wizards can put these images together for all to see. We won't be getting too much back for a while, but channel already looks very interesting.
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Jul 14 2017, 12:49 AM
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#4
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Member Group: Members Posts: 866 Joined: 15-March 05 From: Santa Cruz, CA Member No.: 196 |
nice to see MI images being taken again sol4787, these look set up to stitch for stereo pairs so heres the stitch and one of its sub-pairs in crosseye/anaglyph
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Jul 14 2017, 01:57 PM
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#5
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Member Group: Admin Posts: 978 Joined: 29-September 06 From: Pasadena, CA - USA Member No.: 1200 |
The pancam images for the past several days show a ground texture that looks like it is cemented together and really interesting textures. Maybe some of the image wizards can put these images together for all to see. We won't be getting too much back for a while, but channel already looks very interesting. I'm not so sure about the terrain being cemented. The RHAZ show quite visible cleat marks indicating the soil can be compressed by the cleats. To my untrained eye, this looks more like gravel. Anyway, parking brake is set, we even turned the RF wheel a bit to keep things according to MDOT (Martian Department of Transportation) regulations. See yoou in a couple of weeks. Paolo -------------------- Disclaimer: all opinions, ideas and information included here are my own,and should not be intended to represent opinion or policy of my employer.
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Jul 16 2017, 12:39 PM
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#6
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Member Group: Members Posts: 941 Joined: 4-September 06 From: Boston Member No.: 1102 |
OK Maybe not cemented, but some of these slabs look polished--almost like glacial polish. Does this look like polish by running water to any of you? -------------------- |
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Jul 16 2017, 03:27 PM
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#7
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Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
Hi floyd,
we have seen what a couple of million years of low density Mar's wind can do to 'fluted' rocks. I think the environment there is alien enough that we cant quite appreciate the processes On Earth you be hard pressed to find a dozen 'craters' due to fast (compared to mars) erosion (rain, winds, quakes, tectonics, oceans) These could be stream cobbles or wind eroded ... I am waiting on Grotzinger .et al to weigh in. But it sure is fascinating! Awesome image! See you around town, fellow Bostonian! -------------------- CLA CLL
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Jul 17 2017, 05:37 AM
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#8
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Member Group: Members Posts: 184 Joined: 2-March 06 Member No.: 692 |
That surface does look a little different to my untrained eye. There is work to do here!
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Jul 17 2017, 09:55 PM
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#9
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Member Group: Members Posts: 866 Joined: 15-March 05 From: Santa Cruz, CA Member No.: 196 |
Perseverance Valley indeed seems to differ somewhat significantly in the bedrock and consistency of the soils, comparing relatively similar filter#2 views from Marathon sol4122 with its more pillowy bedrock and angular shards versus the more pebbly and sheared surface seen here in Perseverance sol4791.
That observation, at least in this very limited sampling, doesn't completely hold up when perusing a sampling of MI images at Marathon sol4131 vs Perseverance sol4787, but still some interesting differences are apparent and despite the better focus and exposure of the more recently acquired MI, it seems like the muddier fines have been cleaned away here. I'm curious whether any of this owes to winds in each locale, inferring that here in Perseverance we might expect better solar panel cleaning events? since if seasonal patterns are consistent the images linked are just about 1 Mars year apart. |
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Jul 18 2017, 03:45 AM
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#10
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
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Jul 19 2017, 02:39 AM
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#11
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Senior Member Group: Members Posts: 1064 Joined: 17-February 09 Member No.: 4605 |
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Jul 19 2017, 05:14 AM
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#12
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Merciless Robot Group: Admin Posts: 8789 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Different indeed.
I wonder if we're seeing the effects of a few tens or hundreds of millions of years of wind scouring on harder than usual bedrock. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Jul 19 2017, 04:31 PM
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#13
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Senior Member Group: Members Posts: 4260 Joined: 17-January 05 Member No.: 152 |
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Jul 23 2017, 06:49 PM
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#14
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Senior Member Group: Members Posts: 2887 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
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Jul 24 2017, 04:42 AM
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#15
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Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
We're starting to see some clouds as we head towards winter. Here's an navcam animation from 4793: This is a stretched difference of each frame from the average of the frames. Hi Fred, The originals have that bright 'half moon' in the lower third of the frames (which I think you chopped off) What is that bright area? -------------------- CLA CLL
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