A Plateau in Ares Vallis
A Plateau in Ares Vallis
ESP_038877_1875  Science Theme: Fluvial Processes
This channelized area is near the source region of the huge outflow channel, Ares Vallis. It was at the distal end or “long-ways down-river-area” where the Pathfinder/Sojourner mission landed on 4 July 1997.

This tiny region of Ares Vallis is on a plateau and did not contribute much to the overall water discharge. The slope downhill at the northeast edge of the image leads to the main channel.

Dune- and ripple-like transverse aeolian ridges (TARs) have since covered the bottom of the channels. These are oriented perpendicularly to the winds that must flow through these now-dry channels.

Written by: Kirby Runyon (audio: Tre Gibbs)  (14 January 2015)
Acquisition date
11 November 2014

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
273.0 km (169.7 miles)

Original image scale range
27.3 cm/pixel (with 1 x 1 binning) so objects ~82 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
59°, with the Sun about 31° above the horizon

Solar longitude
231.7°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  337.2°
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   (955MB)

IRB color
map-projected   (502MB)

Black and white
map-projected  (373MB)
non-map           (565MB)

IRB color
map projected  (152MB)
non-map           (519MB)

Merged IRB
map projected  (228MB)

Merged RGB
map-projected  (236MB)

RGB color
non map           (518MB)
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

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.