Stepping It Up in Arabia Terra
NASA/JPL/UArizona
Stepping It Up in Arabia Terra
ESP_066476_1890  Science Theme: Aeolian Processes
Several craters in Arabia Terra are filled with layered rock, often exposed in rounded mounds. The bright layers are roughly the same thickness, giving a stair-step appearance.

The process that formed these sedimentary rocks is not yet well understood. They could have formed from sand or volcanic ash that was blown into the crater, or in water if the crater hosted a lake. One thing is certain, though: it wouldn’t be hard to get your 10,000 daily steps when going on a hike in beautiful Arabia Terra!

Written by: Sharon Wilson (narration: Tre Gibbs)  (15 December 2020)
 
Acquisition date
01 October 2020

Local Mars time
14:48

Latitude (centered)
8.805°

Longitude (East)
-1.049°

Spacecraft altitude
274.8 km (170.8 miles)

Original image scale range
27.6 cm/pixel (with 1 x 1 binning) so objects ~83 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
4.1°

Phase angle
49.2°

Solar incidence angle
53°, with the Sun about 37° above the horizon

Solar longitude
288.0°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  327.0°
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   (732MB)

IRB color
map-projected   (431MB)

JP2 EXTRAS
Black and white
map-projected  (338MB)
non-map           (396MB)

IRB color
map projected  (132MB)
non-map           (344MB)

Merged IRB
map projected  (180MB)

Merged RGB
map-projected  (172MB)

RGB color
non map           (328MB)
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/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.