The Storm, Dust storm of 2007 Options

[Guest_Geographer_*]

Dust devils don't require dust to form (at least to my poor knowledge), it's just their manifestation in which they kick up dust that earned them that name.

Right, dust devils are wind spirals or mini tornados that only are visible when they kick up dust.

[CosmicRocker]

This comes from the Victoria Crater Panoramas topic. I am replying here because it seems to better fit this topic.

Did the recent dust storms change the structure of the crater-floor dunes at all? Or are they just the same?

That question really made me curious. I found pre- and post-storm pancam images of the central ripples from sols 953 and 1344. The two views were from quite different positions, so it was difficult to make a perfect flicker comparison animation due to the different perspectives. I adjusted them to overlay as best I could.

There is a bit of motion between some areas, but I am sure that is only due to some remaining perspective difference that I couldn't remove. I can't rule out small scale changes beyond the resolution of these images, but there seems to be no significant change due to the storm.

[fredk]

Thanks for that, Rocker! I had the same thought and also compared the old and new dune images. Like you I couldn't see any changes beyond what was probably perspective differences. Also, even if we had exactly the same viewpoint, I could imagine lighting differences mimicing slight shifts in the dunes, so you'd have to be very careful.

[jamescanvin]

Split posts on making colour images from monochromatic images taken under differing illumination to a new thread.