Galloping is a phenomenon of low-frequency, high-amplitude wind-induced vibration with a single or several loops per span. These waves are self-excited and sustained by the interaction of aerodynamic, inertia, and elastic forces. Galloping usually occurs in moderately strong, steady wind, acting upon an asymmetrically iced conductor surface. Wind direction causing the galloping has to be more than 45° to the line axis. Galloping is not to be confused with aeolian vibrations which are characterized by high-frequency, low-amplitude, multiple loop modes. Watch Galloping In Action - Manitoba Hydro (Winnipeg, CA) Watch how WINDAMPER anti-galloping damper controls galloping. (Bethlehem steel)