|V. Raindrops Are Falling on My Head|
A. What might the mean annual rainfall of ethane
be on Titan?
B. How large might the ethane raindrops be on Titan?
C. Imagine that Europa was once covered by a global ocean of
water. If we ignore heating due to tidal stressing by Jupiter, an ice shell
will grow on the surface of Europa, in the same way that ice covers a pond
in wintertime on Earth.
Estimate (ignoring tidal heating)
the depth to which the ice shell grows over the age of the Solar System.
Say that heat is being conducted from the top of the subterranean
ocean, through the ice sheet, to Europa's surface, where it is then
radiated away into space. Say further that Europa's
surface is held fixed at a temperature maintained by solar heating,
and that the ocean temperature is also held fixed (at a value you should
be able to estimate).
Be sure to specify how the thickness of the growing ice shell
scales with time.
Students in this group: (I: Jessica, Ben, James: No, Monday at 10 am), (II: Adam, Kristina, Jo: Yes)