Martian Honeycomb Hideout
NASA/JPL/University of Arizona
Martian Honeycomb Hideout
ESP_024061_2610  Science Theme: Seasonal Processes
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The most striking aspect of this image is the honeycomb-like pattern of the dunes.

This is a seasonal monitoring site, meaning HiRISE takes pictures across the seasons to view what changes occur and what causes them. The surface here is covered with seasonal carbon dioxide frost. In this case, we can compare locations of cracks in the frost to previous images.

In this subimage, we see a dark spot on the slope of a dune. This is most likely caused by sublimation, where a solid passes directly into a gaseous state. The frost is translucent (some light passes through), so it sublimates at the base and pressure builds up. When the gas escapes, it can expose the dark ground or throw sand on top of the frost, producing dark spots like these.

This caption is based on the original science rationale.

Written by: HiRISE Science Team (audio by Tre Gibbs)   (20 March 2013)

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Acquisition date:14 September 2011 Local Mars time:13:09
Latitude (centered):80.988° Longitude (East):156.027°
Range to target site:320.9 km (200.5 miles)Original image scale range:64.2 cm/pixel (with 2 x 2 binning) so objects ~193 cm across are resolved
Map projected scale:50 cm/pixelMap projection:Polarstereographic
Emission angle:0.1° Phase angle:81.3°
Solar incidence angle:81°, with the Sun about 9° above the horizon Solar longitude:0.4°, Northern Spring

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