Killer_Lakes《杀人湖》(BBC)

简述

自然科学类纪录片，BBC 频道 2002 年出品，是 BBC Horizon 系列其中之一。

封面

影片信息

官方网站

http://www.bbc.co.uk/science/horizon/2001/killerlakes.shtml

影片原始规格:

• 　中文片名　：杀人湖
• 　中文系列名：BBC 地平线
• 　英文片名　：Killer Lakes
• 　英文系列名：BBC Horizon
• 　电视台　　：BBC
• 　地区　　　：英国
• 　语言　　　：英语
• 　时长　　　：约 44 分钟
• 　版本　　　：TV
• 　发行时间　：2002

影片内容介绍

劇情簡介

When Mount Nyiragongo erupted in the Democratic Republic of Congo in January 2002 it seemed like a disaster. Molten lava plunged down the hillside and poured into nearby Lake Kivu. Many died, and much of the city of Goma was destroyed. In fact, the local people were lucky. Had the eruption spread to one of the many volcanic faults under Lake Kivu, it could have unleashed one of the most terrifying of all natural phenomena - lake overturn.

Death by suffocation

The phenomenon of lake overturn first struck in 1984 at Lake Monoun, in Cameroon. 37 people mysteriously died, suddenly and silently. A bizarre array of theories sprang up - secret testing of chemical weapons, a massacre by unknown terrorists; none really made sense. The scientists who looked into the disaster believed it had to be something to do with the lake itself, but they could not be absolutely sure.

In 1986, before research into the Monoun disaster was made public, it all happened again. The tragedy of Lake Nyos, also in Cameroon, made headlines around the world when almost 1,800 people sleeping in houses around the lake suffocated in their sleep. The team of scientists that went to investigate concluded that carbon dioxide, trapped at the bottom of the lake, had suddenly risen to the surface, killing everything within 25km. They called their theory lake overturn.

Releasing the pressure

Eventually the scientists came to realise that carbon dioxide springs underground were pumping carbon dioxide into the lake and that the whole tragedy would be repeated if nothing was done. They installed an extraordinary fountain in the middle of the lake to help the gas disperse. Even so, the level of carbon dioxide in the waters remains a concern.

The Nyos disaster promoted a survey of deep lakes in Africa and Indonesia to see where else lake overturn could happen. All seem to be safe, except one - Lake Kivu, in Rwanda. Lake Kivu is one of the largest and deepest lakes in Africa and two million people live around its shore. It is also filling up with carbon dioxide, although it's not yet saturated with the deadly gas. The only thing that could trigger a gas release would be a massive geological event. Worryingly, Lake Kivu is sitting in an earthquake zone and surrounded by active volcanoes, including Mount Nyiragongo. If an eruption or an earthquake was to happen under the lake, then the effect could release millions of tons of asphyxiating gas into the surrounding areas. Until a solution is found, millions of lives could be at risk.

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Category:片名 Category:BBC Category:BBC Horizon Category:2002 Category:3. 自然科学类 Category:3.5 地球科学 Category:3.51 地质 Category:3.55 水域地形 Category:3.553 湖泊和池塘 Category:5. 社会科学类 Category:5.1 社会 Category:5.16 灾难 Category:5.161 天灾 Category:6. 史地类 Category:6.1 历史 Category:6.117 二十世纪 Category:6.2 地理 Category:6.25 非洲 Category:6.252 非洲中部 Category:6.2525 刚果共和国 Category:缺翻译