The Arctic produces only 7 percent of the world’s icebergs, and they are generally far smaller than those to the south. In the Antarctic, iceberg names are derived from the Antarctic quadrant in which they are first detected, the quadrants dividing in the following manner: A: 0–90°W (Bellinghausen/Weddell Sea); B: 90°W–180° (Amundsen/ Eastern Ross Sea); C: 180°–90°E (Western Ross Sea/Wilkesland); D: 90°E–0° (Amery/Eastern Weddell Sea).