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How can I find the depth of the low lying part of this image of the western part of Valles Marineris?enter image description here

I'm interested in the area northeast of Noctis Labyrinthus, southwest of Tithonium Chasma, north of Oudemans, and west of Ius Chasma.

I couldn't find any contour maps of Valles Marineris or Noctis Labyrinthus

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You can find MOLA laser altimeter data here:https://pds-geosciences.wustl.edu/missions/mgs/megdr.html. The files are simple rectangular grids of differences between Martian "sea-level" and measure height at 1/128 degree resolution. If you have the latitude and longitude, it is quite straightforward to find the height.

To view these files, you probably need the software found here: https://pds.jpl.nasa.gov/tools/about/pds3-tools/nasa-view.shtml

Looks like the software might be a little out-of-date, but you can give it a try.

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  • $\begingroup$ If you mean the MEGDR Tiled Image Files, my MAC won't let me open those files. I will have to look for another computer $\endgroup$
    – Bob516
    Feb 12 '20 at 17:25
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    $\begingroup$ @Bob516 - I updated the answer to point to the standard software tools for working with this data. At one time I had my own tools, so my answer made it sound simpler than it really is... $\endgroup$
    – antlersoft
    Feb 12 '20 at 18:27

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