Zigzag Channels
Zigzag Channels
PSP_010749_1325  Science Theme: Seasonal Processes
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)
Acquisition date
11 November 2008

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
251.6 km (156.4 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

Emission angle

Phase angle

Solar incidence angle
77°, with the Sun about 13° above the horizon

Solar longitude
155.8°, Northern Summer

For non-map projected images
North azimuth:  96°
Sub-solar azimuth:  36.4°
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

Black and white
map-projected   (335MB)

IRB color
map-projected   (155MB)

Black and white
map-projected  (157MB)
non-map           (213MB)

IRB color
map projected  (70MB)
non-map           (165MB)

Merged IRB
map projected  (288MB)

Merged RGB
map-projected  (286MB)

RGB color
non map           (146MB)
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

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:
NASA/JPL/University of Arizona

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. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.