Animating patterns in sea ice drift

7906_drift2.gif

June 1979.

9706_drift2.gif

June 1997.

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Satellite images from the Atlas of sea ice drift can be animated in various ways to show annual cycles in the movement of ice ice around Antarctica. This imaging technology has only been applied for this use over the last 22 years. Over such a short period, it is difficult to see long term changes.