Lines in the Sand
NASA/JPL/University of Arizona
Lines in the Sand
ESP_014185_1095  Science Theme: Aeolian Processes
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This stunning image shows the traces left behind from dust devils, that have scoured the top layer of the surface and exposed the darker substrate.

Dust devils are fairly common on Mars, sometimes leaving brighter trails rather than dark ones. Over time, we can see beautiful lines criss-crossing the sand.

This caption is based on the original science rationale.

Written by: HiRISE Science Team  (16 September 2009)
 
Acquisition date
05 August 2009

Local Mars time:
14:46

Latitude (centered)
-70.410°

Longitude (East)
178.151°

Spacecraft altitude
248.8 km (155.5 miles)

Original image scale range
49.8 cm/pixel (with 2 x 2 binning) so objects ~149 cm across are resolved

Map projected scale
50 cm/pixel

Map projection
Polarstereographic

Emission angle:
0.2°

Phase angle:
59.0°

Solar incidence angle
59°, with the Sun about 31° above the horizon

Solar longitude
316.2°, Northern Winter

For non-map projected images
North azimuth:  99°
Sub-solar azimuth:  50.6°
JPEG
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

JP2
Black and white
map-projected   (267MB)

IRB color
map-projected   (130MB)

JP2 EXTRAS
Black and white
map-projected  (128MB)
non-map           (180MB)

IRB color
map projected  (60MB)
non-map           (149MB)

Merged IRB
map projected  (265MB)

Merged RGB
map-projected  (249MB)

RGB color
non map           (140MB)
ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
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

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:
NASA/JPL/University of Arizona

POSTSCRIPT
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.