Starburst Channels
NASA/JPL/University of Arizona

Starburst Channels
PSP_003443_0980  Science Theme: Seasonal Processes


This caption is part of a December 2007 AGU presentation "Spring at the South Pole of Mars."

Translucent carbon dioxide ice covers the polar regions of Mars seasonally. It is warmed and sublimates (evaporates) from below, and escaping gas carves a numerous channel morphologies.

In this example the channels form a "starburst" pattern, radiating out into feathery extensions. The center of the pattern is being buried with dust and new darker dust fans ring the outer edges. This may be an example of an expanding morphology, where new channels are formed as the older ones fill and are no longer efficiently channeling the subliming gas out. Written by: Candy Hansen   (21 December 2007)



 Image Products: All image links are drag & drop for HiView, or click to download
JPEG
Grayscale: map projected  non-map
IRB color: map projected  non-map
Merged IRB: map projected
Merged RGB: map projected
RGB color: non-map projected

JP2 DOWNLOAD
Grayscale: map-projected (1329.6 MB)
IRB color: map-projected (561.4 MB)

JP2 EXTRAS
Grayscale: map-projected  (890.4 MB),
non-map  (960.5 MB)
IRB color: map projected  (302.8 MB)
non-map  (720.1 MB)
Merged IRB: map projected  (333.6 MB)
Merged RGB: map-projected  (309.4 MB)
RGB color: non map-projected  (638.0 MB)

ADDITIONAL IMAGE INFORMATION
Grayscale label   Color label
Merged IRB label   Merged RGB label
EDR products

About color products (PDF)
HiView main page

 Observation Toolbox
Acquisition date:21 April 2007 Local Mars time: 4:51 PM
Latitude (centered):-81.810° Longitude (East):76.170°
Range to target site:247.1 km (154.4 miles)Original image scale range:24.7 cm/pixel (with 1 x 1 binning) so objects ~74 cm across are resolved
Map projected scale:25 cm/pixelMap projection:Polarstereographic
Emission angle:1.1° Phase angle:69.9°
Solar incidence angle:71°, with the Sun about 19° above the horizon Solar longitude:223.4°, Northern Autumn
For non-map projected products:
North azimuth:110° Sub-solar azimuth:33.5°
For map-projected products
North azimuth:346.1°Sub solar azimuth:270.5°

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
Postscript
For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. 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.