sea-ice shelf

基本解释

In prior decades, before 1995, low-concentration sea ice persisted during summers over the continental shelf in the Beaufort Sea.
波弗特海附近的环境条件对于北极熊的生存会越来越艰难。就在前几十年，也就是在1995年以前，波弗特海区域低集中海冰一般会出现在夏季遍布在大陆架范围以内。
But staying put is not easy. The Brunt Ice Shelf moves as much as half a mile a year, like a conveyor belt built to toss tea-drinking scientists into the icy sea.
要想追踪大气状态，科考站的坐标位置很关键，但保持稳定不动并不是一件容易的事情，布伦特冰架每半年就要移动半英里之多，它会像一条传送带将整个科考站投入冰海之中。
But the lowest summer ice cap on record put sea ice far north of the outer continental shelf, the shallow, life-rich shelf of ocean bottom in the Bering and Chukchi seas.
但今年夏天北极冰帽面积缩小至历史最低记录，使海冰推移至白令海和楚科奇海一带底栖生物丰富的浅大陆架外围的远北地区。
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In eighteen forty-one, the British navy officer James Ross discovered areas now called the Ross Sea and Ross Ice Shelf.

That breathing space would be useful if something really bad, such as the collapse into the sea of part of the Greenland ice-shelf, was in imminent danger of happening, and the realisation of the danger led to a political agreement that climate change had to be stopped rapidly.
ECONOMIST: Global warming