Landslide Deposit Below Small Knob in Deuteronilus Mensae
NASA/JPL/UArizona
Landslide Deposit Below Small Knob in Deuteronilus Mensae
PSP_006714_2255  Science Theme: Mass Wasting Processes
This image shows a possible landslide deposit originating from a mesa just east (right) of the center of the scene in Deuteronilus Mensae.

The deposit is the lobe-shaped feature extending across the center of the image. Located at approximately 45 degrees north, where ground ice is thought to be stable, it is possible that the deposit formed from mass wasting of ice-rich material. Mass wasting is a process driven by gravity that moves material downslope; ice enhances the process.

The lobe has distinct textures. It is bouldery at some locations (especially the left side) and pitted or wrinkled at others (especially at right). The pitted texture may be due to desiccation (drying) of soil that can occur when ice from beneath the surface sublimates (going directly from a solid to a gas) and leaves empty spaces into which the surface collapses.

Written by: Kelly Kolb  (9 April 2008)
 
Acquisition date
01 January 2008

Local Mars time
14:19

Latitude (centered)
45.272°

Longitude (East)
19.665°

Spacecraft altitude
303.5 km (188.6 miles)

Original image scale range
30.4 cm/pixel (with 1 x 1 binning) so objects ~91 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
1.3°

Phase angle
51.9°

Solar incidence angle
51°, with the Sun about 39° above the horizon

Solar longitude
11.3°, Northern Spring

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  322.9°
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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.