Posted by u/htmanelski
A Dust Devil on Mars
This image of a dust devil in Amazonis Planitia (35.824° N 207.485° E, a few hundred km east of SpaceX’s proposed Mars landing sites) was taken on February 16th, 2012 by HiRISE. Amazonis Planitia is a large flat region in the northern lowlands which give rise for relatively high wind speeds during some parts of the year. Dr. Paul Geissler wrote about this image: “The delicate arc in the plume was produced by a westerly breeze at about a 250-meter height that blew the top of the plume towards the east. The westerly winds and the draw of warmth to the south combine to guide dust devils along southeast trending paths, as indicated by the tracks of many previous dust-devils.”
Everyday I post an image like this in r/Areology, check out that subreddit if you like this kind of stuff!
The width of this image is about 1km and the diameter of the dust devil is about 30 meters.
Credit: NASA/JPL/University of Arizona