HiRISE | Zigzag Channels (PSP_010749

NASA/JPL/University of Arizona

Zigzag Channels
PSP_010749_1325 Science Theme: Seasonal Processes

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A large dune field, still partially covered with seasonal carbon dioxide frost, shows evidence of movement of dune material. When the changes took place is not known.

Channels carved on face of dunes are visible in this subimage.. Rather than going straight down the dune, the channels zigzag back and forth. The fluid or gas that carved the channel is an enigma. Older channels are filled in and ripples are visible there.

Written by: Candy Hansen (21 January 2009)

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Acquisition date:	11 November 2008	Local Mars time:	3:53 PM
Latitude (centered):	-47.240 degrees	Longitude (East):	19.479 degrees
Range to target site:	252.0 km (157.5 miles)	Original image scale range:	50.4 cm/pixel (with 2 x 2 binning) so objects ~151 cm across are resolved
Map projected scale:	50 cm/pixel and North is up	Map projection:	EQUIRECTANGULAR
Emission angle:	3.6 degrees	Phase angle:	80.2 degrees
Solar incidence angle:	77 degrees, with the Sun about 13 degrees above the horizon	Solar longitude:	155.8 degrees, Northern Summer
For non-map projected products:
North azimuth:	96 degrees	Sub-solar azimuth:	36.4 degrees
For map-projected products
North azimuth:	270 degrees	Sub solar azimuth:	209.6 degrees

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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

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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.