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This daring experiment is measuring how the water flowing
這項大膽的試驗旨在探究
under the ice sheet affects the speed with which the glaciers
在冰原底下 水的流動是怎樣影響
flow from it, down to the sea.
冰川流向大海的速度
The theory is that the water is acting as a lubricant.
原理是 水起到了潤滑的作用
So, the more water there is, the faster the glacier flows.
所以水越多 冰川移動的速度就更快
To the naked eye, glaciers don't appear to move at all.
肉眼看來冰川好像巋然不動
But move, they do.
但它確實在移動
These unique time-lapse images
這些快速回放鏡頭是近四年來
were captured over the last four years.
捕捉到的畫面
Through long observations, we now know
通過長時間的觀察 我們得知
that Greenland's ice is flowing down to the sea
格陵蘭冰川向大海移動的速度
twice as quickly as it was 20 years ago.
是二十年前的兩倍
The speed of the glaciers affects our sea levels
冰川的速度影響著我們的海平面高度
because when they reach the water,
因為當它們遇到了水域
they break apart into icebergs.
它們就破碎成冰山
Occasionally, a real mega-berg is born.
很有可能會形成巨大的冰山
