Jumbled Terrain East of Arsia Mons
NASA/JPL/UArizona
Jumbled Terrain East of Arsia Mons
PSP_004056_1735  Science Theme: Mass Wasting Processes
This HiRISE image shows terrain west of the Martian volcano Arsia Mons, the southernmost of the three aligned giant volcanoes known as the Tharsis Montes. The summit of Arsia Mons rises almost 18 kilometers (11 miles) above Mars datum, about twice as high as Mt. Everest on the Earth.

This unusual terrain consists of irregular, raised knobs, many of which are linear. The origin of this texture is unclear; it has been proposed that these deposits are extensive landslide deposits or volatile-rich glacier-like deposits that have moved downslope from the volcano's upper flanks. In either case, the knobby texture gives the impression of a jumbled surface.

Covering the entire scene is a mantle of sedimentary material, most likely wind-blown dust. Subtle bright and dark wind streaks are visible, indicating that the dominant wind direction is right-to-left (west to east; north is up in the image). At full resolution, small slope streaks are evident around the edges of many of the high-relief knobs. These streaks may be avalanche scars where bright dust has been removed, exposing a darker subsurface layer. Fine ripples, which are linear ridges of sediment shaped by the wind, are also evident on most knobs when viewed at full resolution.



Written by: Bradley Thomson  (1 August 2007)
 
Acquisition date
08 June 2007

Local Mars time
15:06

Latitude (centered)
-6.415°

Longitude (East)
234.605°

Spacecraft altitude
258.2 km (160.5 miles)

Original image scale range
26.2 cm/pixel (with 1 x 1 binning) so objects ~79 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
9.5°

Phase angle
56.9°

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

Solar longitude
253.6°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  338.3°
JPEG
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non-map           (498MB)

IRB color
map projected  (177MB)
non-map           (400MB)

Merged IRB
map projected  (198MB)

Merged RGB
map-projected  (187MB)

RGB color
non map           (380MB)
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.