Rolling soughameter is the meter of a series of musical measures which sway in tempo, back and forth between three similar tempos. The most common form moves from 3/4 to 4/4 to 5/4 to 4/4 and back again. Each set of measures at a given tempo can be as short as a single measure and as long as four measures. It is common for a piece to sough briefly in one-measure sets.
This has been used as the meter of passionate distraction, moseying, and parasailing. This is not to be confused with the mysterious but poetic tribrach.
Compositions intended to convey the WikiNature might want to pick up a variant on this theme.