HiRISE: High Resolution Imaging Science Experiment          The University of Arizona

Dark Slope Streak with Streak-Generated Topography (PSP_003542_2035)

Dark Slope Streak with Streak-Generated Topography
Dark Slope Streak with Streak-Generated Topography  (PSP_003542_2035)
Credit: NASA/JPL/University of Arizona

This is a portion of PSP_003542_2035 which shows a dark slope streak north of Olympus Mons, in a region was covered by Mars Orbital Camera image R09/00701. (This portion is rotated with south up so that the direction the streak flowed is towards the bottom of the frame; image is 1086x842, 3 MB).

This image shows that the slope streak forming process altered the pre-existing surface both by exacavating material and depositing it. The fine scalloped texture of the surrounding surface is not present within the streak, and there are low linear mounds within the streak that are not seen outside. Their absence outside the streak indicates that the formation of the mounds resulted from the streak formation process.

There is a large boulder or knob within the streak near the top of the frame which the dark slope streak appears to have flowed around, leaving a light-toned patch of the surrounding surface material intact downstream of the boulder.

Acquisition date:29 April 2007 Local Mars time: 3:22 PM
Latitude (centered):23.3 ° Longitude (East):223.7 °
Range to target site:285.3 km (178.3 miles)Original image scale range:28.5 cm/pixel
(with 1 x 1 binning) so objects ~86 cm across are resolved
Map projected scale:25 cm/pixel and north is upMap projection:EQUIRECTANGULAR
Emission angle:7.6 ° Phase angle:71.6 °
Solar incidence angle:65 °, with the Sun about 25 ° above the horizon Solar longitude:228.3 °, Northern Autumn
For non-map projected products:
North azimuth:98 ° Sub-solar azimuth:329.8 °
For map projected products:
North azimuth:270°Sub solar azimuth144.784°


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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.