Saturn, Satellites

he tern and its relationship with surface tectonics, we present three-dimensional numerical models of a dive et al., 2006), but this number has been recently revised to 16 ± 3 GW using Cassini data that extends to longer infrared wave-lengths and hence can sense emission from lower temperatures (Howett et al., 2011). These heat flows greatly exceed the heat flow of 0.3 GW predicted by radiogenic heat (Porco et al., 2006; Schu-bert et al., 2007). Tidal dissipation, most likely from the Dione and Enceladus 2:1 resonance, has been suggested as a possible heat Scientists have been puzzled by the tectonic contrast between Enceladus ’ southern hemisphere, which is young and geologically active, and its northern hemisphere, which is heavily cratered and relatively ancient. What caused the formation of the tiger stripes and their erupting plumes? Why are the temperature and heat flux in the SPT so highly elevated? Several authors have suggested that Enceladus ’ tectonics may result, directly or indirectly, from convection in its interior (Nimm