Coordinated MER Spirit and MRO HiRISE Imaging Campaign
NASA/JPL/University of Arizona
Coordinated MER Spirit and MRO HiRISE Imaging Campaign
ESP_013499_1650  Science Theme: Future Exploration/Landing Sites
Greek  Spanish 

One of the science objectives of this observation was to try to capture the same dust devil in both cameras simultaneously by coordinated HiRISE and MER Spirit observations.

Surprisingly few dust plumes and dust devil tracks have been observed by HiRISE in Gusev Crater, in comparison to the number of dust devils seen by the rover. Obtaining both ground-based and orbital imagery will allow scientists to better understand the formation, physical properties, and behavior of the dust devils at the MER Spirit landing site.

During these coordinated observations, Spirit observed several small dust devils and a large dust devil in the flat plains northwest of its current position on the western scarp of a polygonal feature commonly called Home Plate. On the other hand, the HiRISE camera did not detect an active dust devil nor the track that dust devils often leave behind. However, a dust devil plume was captured east of Columbia Hills that was about 17 meters in diameter! The top “L-curve” is the track left behind, and the bottom “L-curve” is the shadow of the plume. With changing winds, the dust devil is moving in a direction different than when it formed. It may be that only the largest of the Gusev Crater dust devils can be easily seen by HiRISE.

Ground-based (Mars Exploration Rover) MER and orbital MRO (Mars Reconnaissance Orbiter) HiRISE observations indicate that the low albedo zone in Gusev Crater is currently an active area for the formation of dust devils.

Dust devils are convecting warm-core vortices that form when hot surface air rises and is replaced by the radial inflow of surrounding cool air. This rising vertical column of swirling warm air creates a low pressure core. The low pressure core acts like a vacuum that picks up fine particles that mantle the surface and exposes the dark basaltic substrate in a narrow track.

Subimage credit: Devin Waller, Arizona State University (for Spirit coordination).

Written by: Circe Verba   (2 September 2009)

Click to share this post on Twitter Click to share this post on Facebook Click to share this post on Google+ Click to share this post on Tumblr

 Image Products: All image links are drag & drop for HiView, or click to download
B&W: map projected  non-map

IRB color: map projected  non-map

Merged IRB: map projected

Merged RGB: map projected

RGB color: non-map projected

B&W: map-projected (1062MB)

IRB color: map-projected (423MB)
B&W: map-projected  (497MB),
non-map  (595MB)

IRB color: map projected  (197MB)
non-map  (466MB)

Merged IRB: map projected  (258MB)

Merged RGB: map-projected  (253MB)

RGB color: non map-projected  (487MB)
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

About color products (PDF)
HiView main page

 Observation Toolbox
Acquisition date:13 June 2009 Local Mars time:14:39
Latitude (centered):-14.633° Longitude (East):175.541°
Range to target site:268.8 km (168.0 miles)Original image scale range:26.9 cm/pixel (with 1 x 1 binning) so objects ~81 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:10.1° Phase angle:48.5°
Solar incidence angle:39°, with the Sun about 51° above the horizon Solar longitude:284.3°, Northern Winter

Context map

Usage Policy
All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible: Image: NASA/JPL/University of Arizona
For information about NASA and agency programs on the Web, visit: NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.