Jezero Delta Campaign, Sols 414-1000, 21 Apr 2022- 23 Dec 2023 |
Jezero Delta Campaign, Sols 414-1000, 21 Apr 2022- 23 Dec 2023 |
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#301
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Member ![]() ![]() ![]() Group: Members Posts: 362 Joined: 13-April 06 From: Malta Member No.: 741 ![]() |
Think we can kick off the new phase of exploration at Jezero.
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#302
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Solar System Cartographer ![]() ![]() ![]() ![]() Group: Members Posts: 10194 Joined: 5-April 05 From: Canada Member No.: 227 ![]() |
We will know exactly where the dropoff site is relative to (for instance) those long shallow troughs which cross the site. No problem locating them, no need for special markings made by the wheels. And as Explorer1 points out, tracks can be erased.
I looked at Opportunity's tracks near Endurance crater in images taken about 10 years after they were made. They can be seen in some places and are erased in others. Very dependent on the surface material and occasional windstorms, so hard to predict. I remember Spirit's tracks in Silica Valley were erased by a big storm within months of being formed, and imaged by the rover as it happened. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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#303
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![]() Member ![]() ![]() ![]() Group: Members Posts: 684 Joined: 24-July 15 Member No.: 7619 ![]() |
I looked at Opportunity's tracks near Endurance crater in images taken about 10 years after they were made. They can be seen in some places and are erased in others. Very dependent on the surface material and occasional windstorms, so hard to predict. I remember Spirit's tracks in Silica Valley were erased by a big storm within months of being formed, and imaged by the rover as it happened. Phil Thanks- that's quite interesting about how much mass movement there actually is. Follow up quqestion. When the rover does cross its own older tracks, does it ever do a quick analysis of the composition of dust & sand captured in those tracks? I'm thinking of 'panning for gold' where a small depression preferentially traps heavier particles of sand/dust moving in a flowing fluid or perhaps moving by saltation? Same way that a sluice (or fresh sheep's fleece) laid down in flowing creek will trap gold dust or gold flakes eroded out of upland gold deposits, because they are denser than the average sediment load. |
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