COSMIC SECRETS
The Enigmas on Mars 51a
Dust Devil Videos
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Image Courtesy Nasa/JPL

Video Clips of Dust Devil in Gusev Crater, Sol 445

Video Clips of Gusev Dust Devil, Sol 456 (Plain and Isolated)

Video Clips of Gust and Dust at Gusev, Sol 495

Video Clips of Dust Devils at Gusev, Sol 525


NASA APOD
A Martian Dust Devil Passes
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Image Credit: NASA/JPL/Malin Space Science Systems

A Martian Dust Devil Passes
April 26, 2005
Credit: Mars Exploration Rover Mission, JPL, NASA

Explanation: What goes there across the plains of Mars? A dust devil. For the first time, definitive movies of the famous spinning dust towers have been created from ground level. The robot rover Spirit has now imaged several dust devils from its hillside perch just within the past two months. Each image in the above sequence was taken about 20 seconds apart. Inspection of the digitally resized images show the passing dust devil raising Martian dust so thick that it casts a shadow. The new dust devil movies have been made possible by a new hybrid interaction system where the robot Spirit on Mars takes many images and humans on Earth inspect thumbnails and decide which full resolution images to send back. 

Image Source: NASA APOD
Link to full size image


Martian Dust Devils in Action
Spirit Rover
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Spirit Sol 587


Spirit Sol 632


Spirit Sol 640


Spirit Sol 640

Source: NASA Mars Rovers 


Dust Devil East of Hellas Planitia
PSP 004285 1375 
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Image Credit: NASA/JPL
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Image Credit: NASA/JPL

Dust Devil East of Hellas Planitia

This HiRISE image is of a region east of the Hellas impact basin and south of Reull Vallis. Unexpectedly, HiRISE caught a dust devil blowing across the Martian surface in the southwest portion of the image.

Dust devils form when the temperature of the atmosphere near the ground is much warmer than that above. The hot air rises, and under ideal conditions, forms a vortex that sucks in more warm air. If the vortex is strong enough, it will raise dust off the surface, forming a dust devil.

Dust devils generally form in the afternoon because the sunlight needs sufficient time to warm the surface. When this image was taken, the local time was about 3:08 p.m. In addition to the main image, we show here a small version of the HiRISE image with an arrow showing the location of the dust devil (364 x 800; 284 KB). The third subimage shows the dust devil close up

The bright material is the dust within the vortex, and a dark shadow cast by the dust devil is visible to the right. The diameter of this dust devil is about 200 meters, but at the surface it is probably much smaller. Based on the length of the shadow in this image, the dust devil is on the order of 500 meters tall.Written by: Nathan Bridges   (24 July 2007)

PSP 004285 1375


Martian Dust Devils
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Image Credit: NASA/JPL

Martian Dust Devils
A dust devil on Mars photographed by the Spirit rover on Sol 486 (the 486th day of the Martian year).

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Image Credit: NASA
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