HiRISE | Scarps in Deuteronilus Mensae (PSP_006648

NASA/JPL/University of Arizona

Scarps in Deuteronilus Mensae
PSP_006648_2255 Science Theme: Glacial/Periglacial Processes

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This image shows scarps (steep slopes) in Deuteronilus Mensae, a region of distinctive terrain in the northern hemisphere of Mars.

Polygonal fractures, possibly formed by thermal cycles in ice-rich ground, are visible throughout the scene. The high-standing topography at the top of the scarps have several muted circles. These are remnant impact craters that have degraded throughout time. Their degradation process might have been enhanced by the presence of ground ice.

The two scarps have different morphologies. The right (east-facing) side has a debris apron with a wave-like texture at its base. This is suggestive of material that has moved down the scrap and gradually flowed away from it. Such a process would be expected if the material were ice-rich. There is no counterpart of this feature at the base of the left (west-facing) cliff side.Written by: Kelly Kolb (5 March 2008)

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Acquisition date:	27 December 2007	Local Mars time:	2:17 PM
Latitude (centered):	45.127 degrees	Longitude (East):	21.749 degrees
Range to target site:	303.1 km (189.4 miles)	Original image scale range:	60.6 cm/pixel (with 2 x 2 binning) so objects ~182 cm across are resolved
Map projected scale:	50 cm/pixel and North is up	Map projection:	EQUIRECTANGULAR
Emission angle:	1.4 degrees	Phase angle:	52.5 degrees
Solar incidence angle:	51 degrees, with the Sun about 39 degrees above the horizon	Solar longitude:	8.8 degrees, Northern Spring
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North azimuth:	97 degrees	Sub-solar azimuth:	322.5 degrees
For map-projected products
North azimuth:	270 degrees	Sub solar azimuth:	136.4 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.