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本期節(jié)目音頻下載

Is global warming causing more volcanoes?

EarthSky

Is global warming causing an increase in volcanoes? We got that question several times after the eruption of the Eyjafjallajokull volcano in Iceland. EarthSky asked volcanologist Bjorn Oddsson in Iceland. He said “definitely not.” Science hasn’t revealed any direct correlation between volcanoes and global warming. But that’s possible to visualize a connection.

冰島艾雅法拉火山噴發(fā)后，我們多次收到讀者的提問：最近火山爆發(fā)的頻繁發(fā)生是全球變暖引起的嗎？EarthSky采訪了冰島火山學(xué)家波恩?奧德森。他的答案是“不可能”。科學(xué)還沒有揭示任何火山爆發(fā)和全球變暖的直接聯(lián)系。

Bjorn Oddsson: It surely is getting warmer in the world, and glaciers are getting smaller and thinner. And we have volcanoes beneath glaciers. So the mass which is lying on top is getting less, if a volcano is ready to erupt, it’s more likely to erupt under thinner ice than thicker ice.

波恩?奧德森：全球肯定在變暖，冰川正逐漸融化變小變薄。冰川下面就是火山。所以當(dāng)火山上面的覆蓋冰層變少后，一旦火山處于爆發(fā)醞釀期，被薄冰層覆蓋的火山更容易噴發(fā)。

After the Iceland volcano in April 2010, some scientists called for more research into whether global warming could trigger an increase in geological hazards – volcanoes, earthquakes, landslides, tsunamis. This idea is extremely speculative. No evidence yet exists. In Iceland, Oddsson said, volcanologists are asking another question – how volcanoes might affect climate, instead of the other way around.?

2010年4月冰島火山噴發(fā)后，一些科學(xué)家要求做更深入的研究以確定全球變暖是否會引發(fā)地質(zhì)災(zāi)害發(fā)生頻率的增加——火山，地震，山崩，海嘯等。該觀點純屬推測，還沒任何證據(jù)。奧德森說在冰島火山科學(xué)家們正在探究另外一個問題——火山爆發(fā)會如何影響氣候，而不是反過來琢磨這個問題。

Bjorn Oddssen: It can cause cooling in the world. It just blocks the sun out.

波恩?奧德森：這可能會引發(fā)全球變冷。因為火山灰把陽光擋住了。

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