Artynia Catena
NASA/JPL/University of Arizona
Artynia Catena
ESP_023597_2260  Science Theme: Tectonic Processes
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This observation shows an impressive chain of pits along the southernmost tip of the chain in Artynia Catena, located on the northwestern flank of the volcano, Alba Patera.

These pits form in fracture along its southern most extent. The fracture is part of a larger fracture system that is radial to the volcano and suggests that it is related to the formation of the volcano. Therefore, this chain of pits may have formed from the withdrawal of subsurface magma and subsequent partial collapse of the overlying material into the fracture.

Another explanation may be that subsurface water/ice may have preferentially formed along these fractures and subsequent removal of ice-rich material by sublimation resulted in partial collapse of surface materials forming the pit chain.

Written by: Ginny Gulick  (11 October 2011)
 
Acquisition date
09 August 2011

Local Mars time
13:57

Latitude (centered)
45.845°

Longitude (East)
240.372°

Spacecraft altitude
296.2 km (184.1 miles)

Original image scale range
59.3 cm/pixel (with 2 x 2 binning) so objects ~178 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
0.4°

Phase angle
59.9°

Solar incidence angle
60°, with the Sun about 30° above the horizon

Solar longitude
341.8°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  310.6°
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IRB: infrared-red-blue
RGB: red-green-blue
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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/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.