HiRISE | Rounded Mounds in Northern Arabia Terra (ESP_043834

NASA/JPL-Caltech/UArizona

Rounded Mounds in Northern Arabia Terra
ESP_043834_2160 Science Theme: Geologic Contacts/Stratigraphy

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These rounded, mysterious mounds occur along the floor of a depression in northern Arabia Terra. The mound surface has many parallel troughs that contain light-toned transverse aeolian (e.g., formed by the wind) ridges oriented perpendicular to the trough walls.

The resolution of this image will help assess the nature and grain size of the sediment that makes up these mounds and whether layering is present, ultimately helping to constrain the environment in which these mounds formed.

Written by: Sharon Wilson (narration: Tre Gibbs) (10 February 2016)

This is a stereo pair with ESP_043201_2160.

Acquisition date
03 December 2015

Local Mars time
14:58

Latitude (centered)
35.674°

Longitude (East)
1.823°

Spacecraft altitude
295.4 km (183.6 miles)

Original image scale range
from 29.7 cm/pixel (with 1 x 1 binning) to 59.4 cm/pixel (with 2 x 2 binning)

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
4.9°

Phase angle
35.0°

Solar incidence angle
40°, with the Sun about 50° above the horizon

Solar longitude
76.4°, Northern Spring

For non-map projected images
North azimuth: 96°
Sub-solar azimuth: 2.0°

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   (659MB)

IRB color
map-projected   (466MB)

JP2 EXTRAS
Black and white
map-projected (287MB)
non-map           (214MB)

IRB color
map projected (134MB)
non-map           (308MB)

Merged IRB
map projected (186MB)

Merged RGB
map-projected (179MB)

RGB color
non map           (310MB)

ANAGLYPHS
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

BONUS
4K (TIFF)

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.