For example, a thick rigid ice shell makes it very difficult to produce ice volcanoes, which some have proposed to explain certain features seen on the surface. (sciencedaily.com)
These models were unable to settle the question of whether or not its ocean extended beneath the entire ice shell. (sciencedaily.com)
Since a thinner ice shell retains less heat, the tidal effects caused by Saturn on the large fractures in the ice at the south pole are no longer enough to explain the strong heat flow affecting this region. (sciencedaily.com)