The Dry Ice Polar Caps of Mars

Dec. 9 & 10

Mars has permanent polar caps composed of water ice, and seasonal polar caps composed of carbon dioxide ice (dry ice). In the spring, the seasonal cap ice turns into gas as the sun comes up and shines on the ice. This is a time of great activity as the escaping gas causes avalanches, sandfalls on dunes and carves spider-like channels in the surface. The latest images from the high resolution camera on the Mars Reconnaissance Orbiter are helping us to understand this unearthly phenomena. This talk is co-sponsored by the JPL ESD Planetary Science Visitor and Colloquium Program.

Dr. Candice Hansen
Former Principal Scientist, Planetary Sciences Section,
Planetary Ices Group, JPL

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