A Fresh, Shallow Valley in Northern Arabia Terra
NASA/JPL/University of Arizona
A Fresh, Shallow Valley in Northern Arabia Terra
ESP_039997_2170  Science Theme: Fluvial Processes
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This relatively fresh, shallowly incised valley was once filled with water and/or ice and flowed to the west toward a large, local depression in northern Arabia Terra (36.5 degrees north, 0.3 degrees east).

This type of valley is younger and distinct in appearance relative to the ancient valley networks that formed in the Martian highlands. Most fresh, shallow valleys like this one often appear as scattered and isolated or sparsely branched networks of individual valleys in the mid-latitudes and equatorial regions of Mars. The floor of the channel within this broader valley is covered with light-toned transverse aeolian ridges (3 kilometers across).

Written by: Sharon Wilson  (18 February 2015)

This is a stereo pair with ESP_048792_2170.
 
Acquisition date
07 February 2015

Local Mars time:
14:37

Latitude (centered)
36.535°

Longitude (East)
0.303°

Spacecraft altitude
311.2 km (194.5 miles)

Original image scale range
62.3 cm/pixel (with 2 x 2 binning) so objects ~187 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
19.0°

Phase angle:
59.1°

Solar incidence angle
71°, with the Sun about 19° above the horizon

Solar longitude
286.7°, Northern Winter

For non-map projected images
North azimuth:  95°
Sub-solar azimuth:  311.4°
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JP2 EXTRAS
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map-projected  (121MB)
non-map           (113MB)

IRB color
map projected  (45MB)
non-map           (100MB)

Merged IRB
map projected  (227MB)

Merged RGB
map-projected  (233MB)

RGB color
non map           (99MB)
ANAGLYPHS
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Full resolution JP2 download
Anaglyph details page

ADDITIONAL INFORMATION
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Merged RGB label
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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/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.