BBC紀錄片《冰凍星球》履于薄冰第5期:冰面急速下降

[00:00:01]The Arctic Ocean is of huge military importance, 北冰洋有重要的軍事意義 [00:04:46]as it's the shortest route between North America and Russia. 因為這里是北美和俄羅斯之間最短的通道 [00:14:23]Since the late 1950s, 自上世紀五十年代末起 [00:16:05]British, US and Russian submarines 英國 美國和俄羅斯的潛艇 [00:18:44]have been patrolling the Arctic Ocean. 就在北冰洋巡邏 [00:20:39]But as well as looking out for enemy activity, 他們在探查敵軍的動向的同時 [00:27:00]they've also been measuring the thickness of the ice, 也在測量冰面的厚度 [00:30:04]critical when looking for a place to surface. 因為這關(guān)系到他們在何處浮出水面 [00:36:03]When scientists got permission 當科學(xué)家獲得準許 [00:37:41]to look at the submarine crew's records, 查看潛艇船員的記錄時 [00:40:07]they discovered that the ice has been thinning fast. 他們發(fā)現(xiàn)冰面在急速變薄 [00:43:10]In fact, it's nearly halved in thickness since 1980. 事實上 從1980年起已減少近一半 [00:51:42]Across most of the Arctic Ocean, 北冰洋大部分的冰面 [00:53:36]there are now just a couple of metres of ice. 現(xiàn)在只有幾米厚了 [00:57:18]It's so thin that it could 冰面實在太薄 [01:02:35]melt away almost entirely in the summertime, 到了盛夏時節(jié)很可能會全部融化 [01:05:18]and that includes the ice at the North Pole. 北極的冰也難以幸免 [01:09:11]If current trends continue, then there will be 如果持續(xù)下去 在未來幾十年里 [01:11:52]open ocean here by summer's end, 到了夏末 [01:14:03]some time within the next few decades. 這里就完全變成海洋 [01:19:38]So, the days of the Arctic Ocean being covered 北冰洋被冰層覆蓋的歲月 [01:22:11]by a continuous sheet of ice seem to have passed. 似乎已一去不返 [01:26:14]Whether or not that's a good or bad thing, of course, 當然 這究竟是好是壞 [01:29:30]depends on your point of view. 每個人的觀點不同

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