Event

The layered deposits at Mars north and south poles have long been
thought to contain a record of climate related to ice deposition. Radar
observations from Mars Reconnaissance Orbiter have contributed immensely
to our toolkit for studying those layers, and we are starting to better
understand how climate signals are recorded in the ice caps. Here I
present evidence for two climatic shifts, one using H2O ice on the north
pole that details a glacial/inter-glacial cycle, and another looking at
periodic CO2 deposition from partial atmospheric collapse in the south.
Finally, we will compare surface and subsurface observations to numerical
modeling done with the Ice Sheet System Model developed at JPL and discuss
the possibility that the CO2 deposits at the south pole are flowing like
glaciers. This talk will include many pretty pictures of both poles.