Polar Pits: Are They Active?
NASA/JPL/University of Arizona
Polar Pits: Are They Active?
PSP_009834_2645  Science Theme: Polar Geology

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This 2008 image shows a portion of the North Polar layered deposits with lines of very small pits, only about 1 meter in diameter.

Such small pits should be quickly filled in by seasonal ice and dust, so their existence suggests active processes such as faults pulling apart the icy layers.

Written by: Alfred McEwen  (27 February 2017)

This is a stereo pair with PSP_009873_2645.

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Acquisition date
31 August 2008

Local Mars time:
14:39

Latitude (centered)
84.550°

Longitude (East)
134.723°

Range to target site
332.6 km (207.9 miles)

Original image scale range
33.3 cm/pixel (with 1 x 1 binning) so objects ~100 cm across are resolved

Map projected scale
25 cm/pixel

Map projection
Polarstereographic

Emission angle:
15.9°

Phase angle:
51.8°

Solar incidence angle
64°, with the Sun about 26° above the horizon

Solar longitude
120.6°, Northern Summer

North azimuth:
104°

Sub-solar azimuth:
322.7°
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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
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
For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. 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. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.