THE ROLE OF ICE IN CERES’ SURFACE FLOWS, LANDSLIDES, AND MASS WASTING
Our continued work of flows and landslides, as well as newly resolved smaller flows, on Ceres addresses two fronts. First, we analyze the relationship between landslide surface area and volume, which reflects the ability of the active flow to either support the moving material, spread, or deposit, to suggest differences in ground-ice content and temperature among flow types; Terrestrial work has already demonstrated distinct volume-area power-law relationships between bedrock and soil landslides, the result of limitations in soil thickness only for shallow landslides. Second, we use first-order modeling of end-member flow and failure mechanisms to test variables including saturation and cohesion. These simple models explore landslide failure and glacial flow conditions using an infinite slope approach and Glens Flow Law, respectively. Overall, we are building on our initial work supporting ground ice at Ceres and how variations in latitude are influencing the ice content and temperature.
References:
Combe, J.-Ph., et al. (2016),, 47th LPSC, Abstract #1820.
Larsen, I. J., Montgomery, D. R., and Korup, O., (2010), Nature Geoscience, v. 3, p. 247.
Prettyman, T.H., et al., (2016), 47th LPSC, Abstract #2228.
Schmidt, B., et al., (2015), AGU Abstract, #2187