File:Martian CO2 gas venting.jpg

Summary

Description

Schematic sketch of the CO2 geyser hypothesis. Martian south polar layered terrain is overlain by seasonal ice of ~1 m in thickness. Penetration of sunlight to the base of the seasonal deposit causes sublimation from the bottom, leading to a buildup of pressurized CO2 gas. The gas eventually bursts out, entraining dust and leading to the dark fan-shaped deposits. Repeated outbursts from year to year erode the underlying polar layered deposits, leading to the development of "Martian spiders".

Date

5 September 2009

Source

Own work by uploader: I scanned, cropped and resized the original image from paper by Sylvain Piqueux. JGR, VOL. 108, no. E8, 5084, doi:10.1029/2002JE002007, 2003

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BatteryIncluded

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