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Several icy bodies in the outer Solar system have extensive internal oceans. In several bodies the oceans are believed to be so extensive they decouple the interior core from the icy surface. A major evolutionary driver in the Solar System is high speed impacts – which lead to cratering or even disruption of the target body. Here we consider how the presence of an internal ocean modifies the energy...
Studies of impacts (impactor velocity about 5 km s −1 ) on icy targets were performed. The prime goal was to study the response of solid CO 2 targets to impacts and to find the differences between the results of impacts on CO 2 targets with those on H 2 O ice targets. The crater dimensions in CO 2 ice were found to scale with impact energy, with little dependence...
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