Spring in Inca City V
NASA/JPL/University of Arizona
Spring in Inca City V
ESP_038299_0985  Science Theme: Seasonal Processes

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A significant event has occurred in Inca City. The layer of seasonal ice has started to develop long cracks. This is visible in the orange-colored band adjacent to the araneiforms. Fans of dust are emerging from long linear cracks. The cracks form when large plates of ice have no easily ruptured weak spots to release the pressure from gas building up underneath, so the ice simply cracks.

There are also more fans on the ridge at the top of the image, and more have appeared in between the araneiforms. We do not have any analogous processes occurring naturally on Earth: this is truly Martian.

Written by: Candy Hansen   (13 November 2014)

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Acquisition date:27 September 2014 Local Mars time:17:06
Latitude (centered):-81.382° Longitude (East):295.748°
Range to target site:245.8 km (153.6 miles)Original image scale range:49.2 cm/pixel (with 2 x 2 binning) so objects ~148 cm across are resolved
Map projected scale:50 cm/pixelMap projection:Polarstereographic
Emission angle:3.5° Phase angle:75.3°
Solar incidence angle:78°, with the Sun about 12° above the horizon Solar longitude:203.9°, Northern Autumn

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