A Fresh, Shallow Valley in Northern Arabia Terra
A Fresh, Shallow Valley in Northern Arabia Terra
ESP_039997_2170  Science Theme: Fluvial Processes
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.

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 (narration: Tre Gibbs)  (18 February 2015)

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

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
295.8 km (183.9 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

Emission angle

Phase angle

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°
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

Black and white
map-projected   (261MB)

IRB color
map-projected   (147MB)

Black and white
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)
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

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

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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.