BBC紀錄片《冰凍星球》履于薄冰第11期:讓湖水消失的洞穴
艾倫的團隊已經找到了讓湖水消失的洞穴
[00:03:40]and they want to have a closer look.
他們想要來個近距離觀察
[00:06:17]It's not a job for anyone with a fear of heights.
這對恐高的人來說是絕不可能的
[00:16:10]As you can see, it's dry up here,
可以看到這里已經干涸
[00:17:31]but if you listen,
但如果仔細聽
[00:18:37]you can hear the thunder of,
便能聽到大量的流水
[00:20:04]there's a lot of water entering it at some depth.
從深處貫入其中的隆隆聲
[00:24:54]Alun wants to place a sensor deep into the moulin
艾倫想在冰川鍋穴深處安裝一個傳感器
[00:28:25]to discover how much water is flowing through the ice.
來研究有多少水在冰川里穿梭
[00:37:36]As they drop, they travel back in time.
向下深入的時候 他們仿佛回到了從前
[00:42:52]30 metres down and they reach ice formed from snow that fell
三十米深處的冰是一萬年前
[00:47:05]10,000 years ago, in the last Ice Age.
冰河世紀時期的降雪堆積起來的
[00:52:36]When this lake drained and the plug got pulled
一旦湖水干涸 就像打開了閥門
[00:56:12]and the whole lot flushed down through here,
整個水流都會從這沖刷而下
[01:00:25]this ice sheet, it rose by a metre
這塊冰原就會增高一米
[01:03:26]as that water accessed the bed and forced,
因為水流到了冰床之下
[01:06:11]jacked up the ice sheet.
迫使冰原提升
[01:07:59]So, we know that the water
我們知道
[01:09:28]in this whole plumbing cavity system, down here,
水在這整個垂直墜落過程中
[01:13:45]we know that shoots straight through that ice
徑直沖破了冰川
[01:16:40]and actually hits the bed of the ice sheet.
直接撞擊了冰原的底部
[01:19:43]We've hit the water, I can see the water now.
我們到水邊了 我能看到水了
[01:22:21]Great. Nice work.
很棒 干得漂亮
