Recent retreat of ice cliffs, King George Island, South Shetland Islands, Antarctic Peninsula
Recent retreat of ice cliffs, King George Island, South Shetland Islands, Antarctic Peninsula
复制标题
南极半岛南设得兰群岛乔治王岛冰崖最近退缩
作者：
Byong;S. Chang;H. Yoon;Hosung Chung
对比航空照片表明，在玛丽安湾，麦克斯韦湾，乔治王岛西南部的冰崖，后退约250米之间的1956年和1986年，但前进约40米之间的1986年12月和1989年1月。20世纪80年代后期的进步似乎与1986-88年寒冷的冬季有关。1994年1月的地形测量显示，自1989年1月以来，玛丽安湾的冰崖再次后退了约270米，与1956年12月至1986年12月的情况大致相同。在波特湾，冰崖从1956- 1989年后退了大约400米。这里更明显的后退可能归因于较浅的水深（<30米）。这些冰崖撤退被认为是最近区域变暖的可能后果。
Comparison of aerial photos shows that the ice cliff in Marian Cove, Maxwell Bay, southwestern King George Island, retreated approximately 250 m between 1956 and 1986, but advanced about 40 m between December 1986 and January 1989. The advance in the late 1980s seems to be related to the cold austral winters of 1986-88. A topographic survey in January 1994 revealed that the ice cliff in Marian Cove had again retreated around 270 m since January 1989; approximately the same as from December 1956 to December 1986. in Potter Cove, the ice cliff retreated approximately 400 m from 1956-89. The more pronounced retreat here may be attributable to shallower water depths (<30m). These ice cliffs retreats are discussed as a possible consequence of recent regional warming.