BBC纪录片《冰冻星球》履于薄冰第12期:格陵兰冰川

[00:00:37]This daring experiment is measuring how the water flowing 这项大胆的试验旨在探究 [00:04:10]under the ice sheet affects the speed with which the glaciers 在冰原底下 水的流动是怎样影响 [00:07:49]flow from it, down to the sea. 冰川流向大海的速度 [00:10:36]The theory is that the water is acting as a lubricant. 原理是 水起到了润滑的作用 [00:13:52]So, the more water there is, the faster the glacier flows. 所以水越多 冰川移动的速度就更快 [00:19:50]To the naked eye, glaciers don't appear to move at all. 肉眼看来冰川好像岿然不动 [00:24:03]But move, they do. 但它确实在移动 [00:27:46]These unique time-lapse images 这些快速回放镜头是近四年来 [00:30:22]were captured over the last four years. 捕捉到的画面 [00:43:37]Through long observations, we now know 通过长时间的观察 我们得知 [00:45:51]that Greenland's ice is flowing down to the sea 格陵兰冰川向大海移动的速度 [00:48:56]twice as quickly as it was 20 years ago. 是二十年前的两倍 [00:54:15]The speed of the glaciers affects our sea levels 冰川的速度影响着我们的海平面高度 [00:57:01]because when they reach the water, 因为当它们遇到了水域 [00:58:56]they break apart into icebergs. 它们就破碎成冰山 [01:01:10]Occasionally, a real mega-berg is born. 很有可能会形成巨大的冰山

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