The first hiking maps of Mars |
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The first hiking maps of Mars |
| Guest_AlexBlackwell_* |
 Feb 12 2007, 06:12 PM
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#1
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| Guest_AlexBlackwell_* |
Feb 12 2007, 06:25 PM
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Guests |
Check out Emily's latest blog entry.
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Feb 12 2007, 07:51 PM
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#3
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Member  Group: Members Posts: 311 Joined: 31-August 05 From: Florida & Texas, USA Member No.: 482 |
I was definitely on Emily's wavelength! 250m contour intervals on most of the maps!
 Maybe for an expert like Climber, that's a walk in the park, but even a 20m contour can hide some pretty spooky slopes, at least for 1G hikers. |
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Feb 13 2007, 02:12 PM
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#4
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 Member Group: Members Posts: 656 Joined: 20-April 05 From: League City, Texas Member No.: 285 |
Am I correctly recalling that Nasa/USGS was producing topographic maps of the Martian surface at least as far back as the Viking missions?
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Feb 13 2007, 03:03 PM
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Rover Driver Group: Members Posts: 1015 Joined: 4-March 04 Member No.: 47 |
I'm looking at one from 1976, based on Mariner data
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Feb 13 2007, 03:50 PM
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#6
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Member Group: Members Posts: 656 Joined: 20-April 05 From: League City, Texas Member No.: 285 |
As I thought. I can't wait to hear them announce the first mapping of hematite at Meridiani
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Feb 13 2007, 05:42 PM
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#7
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 Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
QUOTE (algorimancer @ Feb 13 2007, 06:12 AM)  Am I correctly recalling that Nasa/USGS was producing topographic maps of the Martian surface at least as far back as the Viking missions? I never saw a contoured one, but I do have several of the USGS airbrushed Mariner 9 maps circa 1973-74...beautiful things, used to look at them for hours (esp. Tharsis). -------------------- 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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Aug 25 2007, 04:07 PM
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 Senior Member Group: Members Posts: 1624 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
My recollection is that they do have contours. I should dig mine out if I can find them. It looks like this summary has that 1976 topo map listed:
http://astrogeology.usgs.gov/Projects/MapB...mars_small.html -------------------- Steve [ my home page and planetary maps page ]
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Aug 25 2007, 04:56 PM
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#9
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Solar System Cartographer Group: Members Posts: 10145 Joined: 5-April 05 From: Canada Member No.: 227 |
I didn't notice this discussion at the time, so here goes...
USGS made topo maps from Mariner 9 and Viking data. Global maps were from very sparse and weak data - like atmospheric density estimated from occultations. Local details could be go from stereo images - very few in Mariner 9 data, lots in Viking. But stereo is no good globally for a big place like Mars (the orientation of the stereo model is not constrained), so topo was still poor for Viking. Nevertheless, global maps at 1:25 million and 1:15M were compiled, and the 1:5M sheets had a topo version as well. For Viking, 1:2M topo was produced for some sheets of the 120-sheet series. Viking landing site maps included topo at 1:250K. But only with MOLA did we get good topo globally. And we still lack it for the Moon. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke 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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