HiRISE | Bright and Dark Slope Streaks in Arabia Terra (ESP_022405

NASA/JPL-Caltech/UArizona

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°

JPEG
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

JP2
Black and white
map-projected   (172MB)

IRB color
map-projected   (78MB)

JP2 EXTRAS
Black and white
map-projected (79MB)
non-map           (92MB)

IRB color
map projected (27MB)
non-map           (85MB)

Merged IRB
map projected (173MB)

Merged RGB
map-projected (158MB)

RGB color
non map           (80MB)

ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

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-Caltech/UArizona

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.