Dark Slope Streak with Streak-Generated Topography
Dark Slope Streak with Streak-Generated Topography
PSP_003542_2035  Science Theme: Mass Wasting Processes
This closeup of shows a dark slope streak north of Olympus Mons, in a region photographed by the Mars Orbital Camera. (This portion is rotated with south up so that the direction the streak flowed is towards the bottom).

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.

Written by: Ross A. Beyer  (16 May 2007)

This is a stereo pair with PSP_005599_2035.
Acquisition date
29 April 2007

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
282.8 km (175.8 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 up

Map projection

Emission angle

Phase angle

Solar incidence angle
65°, with the Sun about 25° above the horizon

Solar longitude
228.3°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  329.7°
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Full resolution JP2 download
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Black & white is 5 km across; enhanced color about 1 km
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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:
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.