The Pits of Elysium Mons
NASA/JPL/University of Arizona
The Pits of Elysium Mons
ESP_056026_2050  Science Theme: Fluvial Processes
twitter  •  tumblr

HICLIP
1080p (MP4)
Audio (MP3)

WALLPAPER
800
1024
1152
1280
1440
1600
1920
2048
2560
2736
2880
4500
4K
8K
10K

HIFLYER
PDF (11 x 17)

HISLIDES
PowerPoint
Keynote
PDF

During the 2018 Mars dust storm, we obtained a clear view of the summit of the giant volcano Elysium Mons. We see the western rim and floor of the caldera, and a chain of pits (called a “catena”) extending from the caldera towards the north. The chain of pits likely formed by volcanic processes, such as the collapse of a lava tube after it drained. Or by a tectonic process, such as a rift in the rocks below that drained loose material from the surface.

An unexpected feature of this catena is the presence of avalanches in two of the pits (marked A and B in the cutout, with the uphill direction towards the top of the image.) The flows in both pits could be ancient, produced during the formation of the catena, but they are not found in the other pits in the chain. They might have formed more recently by the collapse of steep dust deposits like those in a degraded crater to the left of the catena (marked C).

Written by: Paul Geissler (audio: Tre Gibbs)  (15 October 2018)
 
Acquisition date
10 July 2018

Local Mars time:
15:21

Latitude (centered)
24.780°

Longitude (East)
146.685°

Spacecraft altitude
271.2 km (169.5 miles)

Original image scale range
54.3 cm/pixel (with 2 x 2 binning) so objects ~163 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
4.3°

Phase angle:
65.2°

Solar incidence angle
61°, with the Sun about 29° above the horizon

Solar longitude
208.4°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  335.5°
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   (420MB)

IRB color
map-projected   (215MB)

JP2 EXTRAS
Black and white
map-projected  (235MB)
non-map           (239MB)

IRB color
map projected  (126MB)
non-map           (242MB)

Merged IRB
map projected  (436MB)

Merged RGB
map-projected  (395MB)

RGB color
non map           (225MB)
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.