Rough Surfaces in Deuteronilus Mensae
Rough Surfaces in Deuteronilus Mensae
ESP_025174_2245  Science Theme: Glacial/Periglacial Processes
The objective of this observation is to examine what may be formerly ice-rich terrain that has just lost ice to the atmosphere.

Research with the Shallow Radar instrument onboard the Mars Reconnaissance Orbiter has found that many areas in Deuteronilus Mensae are glaciers with a thin layer of debris on top of them. This image may show a transition from ice-rich to ice-poor terrain.

Removal of buried ice can cause collapse and may be responsible for the strange appearance of this terrain. Understanding the origin of features in this image tells us something about when buried ice was stable or unstable and therefore helps us figure out how the climate of Mars has changed.

Written by: HiRISE Science Team (audio: Robert Rappaport)  (20 June 2012)
Acquisition date
10 December 2011

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
302.7 km (188.1 miles)

Original image scale range
30.6 cm/pixel (with 1 x 1 binning) so objects ~92 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
42°, with the Sun about 48° above the horizon

Solar longitude
41.2°, Northern Spring

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  336.8°
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Black & white is 5 km across; enhanced color about 1 km
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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’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.