HiRISE | Sand Slide (PSP_010546

NASA/JPL/University of Arizona

Sand Slide
PSP_010546_2615 Science Theme: Polar Geology

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Sand dunes are found in numerous locales on Mars. These dunes are in the North polar region. High latitude dunes are covered seasonally with carbon dioxide frost (dry ice).

The subimage shows a place where material has slipped from the crest of the dune and slid down to form a deposit at the bottom. The material may have been loosened by the activity associated with sublimation (evaporation from a solid to a gas) of seasonal frost.

Written by: Candy Hansen (14 January 2009)

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Acquisition date:	26 October 2008	Local Mars time:	2:43 PM
Latitude (centered):	81.6 degrees	Longitude (East):	135.1 degrees
Range to target site:	321.5 km (201.0 miles)	Original image scale range:	64.3 cm/pixel (with 2 x 2 binning) so objects ~193 cm across are resolved
Map projected scale:	50 cm/pixel	Map projection:	POLAR STEREOGRAPHIC
Emission angle:	6.2 degrees	Phase angle:	65.4 degrees
Solar incidence angle:	71 degrees, with the Sun about 19 degrees above the horizon	Solar longitude:	147.6 degrees, Northern Summer
For non-map projected products:
North azimuth:	105 degrees	Sub-solar azimuth:	326.7 degrees
For map-projected products
North azimuth:	134.9 degrees	Sub solar azimuth:	357.3 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

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.