To better understand the calving of icebergs, glaciologists from the University of Hamburg Climate Campus have been monitoring the Fimbul Ice Shelf from an altitude of 500 kilometres using the German Aerospace Center (DLR) radar satellite TerraSAR-X. Until now, they have not been able to predict how much ice will break away each year or where. This image was obtained on 21 December 2009, when the fissures had not yet advanced far enough into the interior for calving to occur.