nonpropagating soliton

nonpropagating soliton

[¦nän′präp·ə‚gād·iŋ ′säl·ə‚tän]
(fluid mechanics)
A stable oscillation in a fluid channel that is stationary and highly localized in the length direction of the channel and can be generated when the floor of the channel is subjected to vertical, sinusoidal oscillations.