"Ice drift" refers to the movement of floating ice on the surface of a body of water, such as a river, lake, or ocean. It occurs when the ice is carried by wind, current, or other natural forces. Full definition
It seems like sea ice drift speed is an important parameter related to sea ice summer minimum extent and that seems quite logical. (searcharcticscience.org)
Increased variability in ice drift is also observed in 2012 compared to 2011. (searcharcticscience.org)