Bright and Dark Slope Streaks in Arabia Terra
NASA/JPL/University of Arizona
Bright and Dark Slope Streaks in Arabia Terra
ESP_022405_1910  Science Theme: Mass Wasting Processes
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While HiRISE has imaged slope streaks before, bright streaks are not as common as dark ones, so they're of high interest.

Slope streaks are generally small features, and have an interior roughness that is finer than the width of the streak itself. A high resolution image can help identify the characteristics of this roughness.

Additionally, studying these streaks can shed light on the "life cycle" of a streak and the geologic processes that created them. We may also be able to study the photometric properties of the streaks.

(Note: the above image is not map-projected, so north is approximate down).

This caption is based on the original science rationale.

Written by: HiRISE Science Team  (15 August 2012)
 
Acquisition date
08 May 2011

Local Mars time
14:24

Latitude (centered)
10.718°

Longitude (East)
28.433°

Spacecraft altitude
275.8 km (171.4 miles)

Original image scale range
55.1 cm/pixel (with 2 x 2 binning) so objects ~165 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
0.6°

Phase angle
49.9°

Solar incidence angle
49°, with the Sun about 41° above the horizon

Solar longitude
288.6°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  321.5°
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HiView

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IRB: infrared-red-blue
RGB: red-green-blue
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Black & white is 5 km across; enhanced color about 1 km
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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.