An even closer possibility is the supervolcano.

更有可能发生的是超级火山灾害。

The most likely and devastating culprit would be the Yellowstone supervolcano in the United States.

可能性最大、也最具有毁灭性的爆发点应该是美国黄石超级火山。

Now that this supervolcano has exploded.

既然这个超级火山喷发了。

Well first, what makes Yellowstone a supervolcano anyway?

首先，究竟是什么使黄石火山成为超级火山？

It's possible, though somewhat speculative, that the entire planet is a supervolcano, a ginormous pressure cooker of barely-constrained magma.

还有可能，虽然只是臆测，整个地球就是一座超级火山，就像一口勉强压制着岩浆的巨型压力锅。

But the rest stays underground, inside the supervolcano's magma chambers.

但是其余的热量蛰伏于地下，存储在超级火山的岩浆室内。

The main issue with them is that not every eruption from a supervolcano is a super eruption.

问题在于超级火山每次爆发不一定是超级喷发。

Well, apart from it being larger in size, a supervolcano also produces a much more massive explosion.

好吧，除了它很大之外，超级火山也会带来更大规模的喷发。

The Yellowstone volcano is actually a supervolcano.

黄石火山实际上是一座超级火山。

But it's the Campi Flegrei supervolcano in Italy which is closest to exploding.

但最接近爆发的是意大利的 Campi Flegrei 超级火山。

This classifies it as a supervolcano, as it initially erupted over 1,000 cubic meters of material around 43,000 years ago.

它被归类于超级火山，因为它最初在大约 43，000 年前喷出了 1000 多立方米的物质。

Surprisingly, there wouldn't be much of it, at least not as much as you'd expect from a supervolcano.

令人惊讶的是，喷出的熔岩并不会很多，最起码比你想象中的超级火山喷出的少。

Experts believe this supervolcano is at a critical state and getting ready to erupt.

专家认为，这座超级火山正处于临界状态并准备爆发。

Needless to say, the Yellowstone supervolcano isn’t done yet.

不用说，黄石超级火山 还没有完成。

But humanity managed to persevere, which leaves the interesting question of what would happen if a level 8 supervolcano exploded today.

但是人类还是顽强地生存了下来，不过也留下了一个有趣的问题，如果现今发生一起八级超级火山爆发，会产生什么后果。

In addition, separate studies provided different lines of evidence for a supervolcano caldera, but none connected the dots.

此外，单独的研究为超级火山喷口提供了不同的证据，但没有一个将这些点联系起来。

It also plans to search for matching ash in ice cores collected in other parts of the world to determine when the supervolcano would have erupted.

它还计划在世界其他地方收集的冰芯中寻找匹配的火山灰， 以确定超级火山何时爆发。