Carbon dioxide glaciers on Mars

I. B. SMITH, E. LAROUR, N. E. PUTZIG, N.-J. SCHLEGEL and R. GREVE


Abstract

We characterize surface features and topography of known CO2 deposits at the south polar layered deposits of Mars. Based on comparisons with terrestrial glaciological features, we find that the features resemble glacial deposits on Earth and likely flowed significant distances to reach their present state. We support our interpretation with 2-D and 3-D modeling and find that the observed gross morphological shapes match those predicted in simulations. Present day flow is inhibited by a thin (< 10 m) water-ice shell that has numerous crevasses, indicating that the driving stresses have caused brittle failure of the capping unit in the past.


Geophysical Research Letters (submitted).

 
Last modified: 2019-01-17