Curving Ridges and Pits
NASA/JPL/University of Arizona
Curving Ridges and Pits
ESP_056311_0940  Science Theme: Polar Geology
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This terrain is unusual for the South Polar region of Mars, with a set of curved ridges of unknown origin.

Small pits are present, often concentrated on the ridges, that may have resulted from sublimation of ice.

Written by: Alfred McEwen  (29 October 2018)
 
Acquisition date
01 August 2018

Local Mars time:
18:03

Latitude (centered)
-85.922°

Longitude (East)
338.699°

Spacecraft altitude
244.8 km (153.0 miles)

Original image scale range
24.5 cm/pixel (with 1 x 1 binning) so objects ~73 cm across are resolved

Map projected scale
25 cm/pixel

Map projection
Polarstereographic

Emission angle:
0.0°

Phase angle:
73.6°

Solar incidence angle
74°, with the Sun about 16° above the horizon

Solar longitude
222.0°, Northern Autumn

For non-map projected images
North azimuth:  130°
Sub-solar azimuth:  38.1°
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non-map           (596MB)

IRB color
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non-map           (507MB)

Merged IRB
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Merged RGB
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RGB color
non map           (437MB)
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.