An exhaustive analysis of the Voyager image data sets reveals the F Ring to be the most dynamic ring in the solar system.
Principal properties are as follows.
In practice, the closer one looks at the rings, the finer detail one finds. No major clumps persist for the nine months between the Voyager encounters, but most survive for the weeks they can be detected during a single encounter. A few major clumps are seen to appear or disappear very quickly, on time scales as brief as days. One clump appears to spread longitudinally after it first appears, but other clumps stay roughly fixed in longitudinal extend. The processes behind clump formation and destruction are unknown.