In reply to Tom Valentine: SO many of Jupiters moons would be an interesting target
To malk - mantle plumes are an interesting analogy... some of those are VERY persistent in comparism to the continents, oceans, skidding over the top of them. .
I was thinking a little about this this morning,, that you have this mahoosive planet, spinning round, so the velocity difference at a point at the pole compared to a point on the equator must be enormous,,, with a heavy , dense atmosphere. This can't all rotate as one so the revolution will tear the atmosphere into the bands we see and eddys, storms are an inevitable consequence.