NASA QuikScat data of Antarctic sea ice movement (June-Sept. 2008) overlaid on maps of sea ice type (white = rough older ice; light blue = older ice, darker blue = younger ice, red = melt on ice, gray = permanent ice, brown = land, deep blue = open water. Red/black dots track ice movement over time.
Credits: NASA/JPL-Caltech/University of Washington, U.S. National Ice Center
http://www.nasa.gov/feature/jpl/study-helps-explain-sea-ice-differences-at-earths-poles